True, humans form gametes by a process called gametogenesis.
A biological process called gametogenesis involves the division and development of diploid or haploid precursor cells to produce mature haploid gametes. Depending on the biological life cycle of the organism, gametogenesis can take place either through mitosis or meiotic division of diploid gametocytes into different gametes. In plants, for instance, gametophytes undergo mitosis to produce gametes. Following sporic meiosis, the haploid spores develop into the gametophytes. The term "alternation of generations" also refers to the existence of a multicellular, haploid phase between meiosis and gametogenesis in the life cycle.
Gametogenesis is the biological process by which haploid or diploid cells divide to produce new cells. grown haploid gametes. Depending on an organism's biological life cycle, it may occur through either mitosis or meiosis to divide diploid gametocytes into various gametes. To produce gametes, for instance, plant gametophytes go through mitosis. Various forms exist for both men and women.
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which of these are industrial uses for synthesized ga? multiple select question. increasing yield of sugarcane increasing the size of seedless grapes increasing the length of celery petioles killing a variety of monocot weeds in agricultural settings tightening the clusters on grape vines, so that air does not get between the fruit and cause problems
Industrial uses for synthesized GA (Gibberellic acid) include increasing the length, yield, and size of the crops. Thus, options a, b, and c are correct.
Yield is increased by using synthesized GA in the form of Gibberellic acid, which helps promote cell elongation, fruit enlargement, and better seed formation.
The use of synthetic GA in the agriculture industry is beneficial in many ways as it helps in enhancing the growth of crops and increases productivity.
There are several industrial uses of synthesized GA. They include:
a. Increasing yield of sugarcane
b. Increasing the size of seedless grapes problems
c. Increasing the length of celery petioles
They are not involved in killing monocot weeds and tightening the clusters on grape vines.
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identify the rna polymerase in prokaryotes that can accurately initiate synthesis.
The RNA polymerase in prokaryotes that can accurately initiate synthesis is called the holoenzyme.
In prokaryotes, the synthesis of several forms of RNA (rRNA, mRNA, tRNA, etc.) is carried out by a single type of RNAP. The multicomplex enzyme RNAP, also known as RNA Polymerase Holoenzyme, has a molecular weight of 465 kD. The bulk of prokaryotes polymerize RNAP at a rate of 40–50 nucleotides per second.
An enzyme called RNA polymerase (RNAP) is used in transcription to catalyse the synthesis of RNA from DNA. When RNAP attaches to the DNA promoter region, the DNA double helix is unwound and RNA is produced in a 5' to 3' orientation, starting the transcription process.
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2. Compare the environment in which physical weathering is dominant to the
environment in which chemical weathering is dominant.
Answer:
chemical weathering is more dominant in the regions where there is abundant limestone rock.
Explanation:
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simple spinal reflexes occur independent of the brain.truefalse
Simple spinal reflexes occur alone in the brain. Harm to the ventral foundation of a spinal nerve would imply that the tactile gift of the reflex circular part would be raided. For the spinal cord to process a reflex arc, interneurons must be involved. The correct answer is true.
Control centers in the brain have a significant impact on spinal reflexes. Axons originate in a variety of brainstem and cerebral cortex centers and synapse primarily with spinal interneurons, with some providing direct input to motor neurons.
The brain does not participate in a reflex action. These automatic actions are controlled by the spinal cord, which response to stimuli without considering how to respond. The brain does not respond in any meaningful way to it.
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dna choose... joins choose... to synthesize a new choose... dna strand.
DNA polymerase is an enzyme that joins nucleotides to synthesize a new DNA strand during DNA replication.
The process begins with the separation of the double-stranded DNA molecule into two separate strands by an enzyme called helicase. One of the strands serves as a template for the synthesis of a new complementary strand. DNA polymerase reads the template strand and matches complementary nucleotides to it, adding them one by one in the 5' to 3' direction.
As each nucleotide is added, DNA polymerase catalyzes the formation of a phosphodiester bond between the 3' end of the growing DNA strand and the 5' phosphate group of the new nucleotide. This process continues until a complete new DNA strand has been synthesized.
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during his pea plant studies mendel found that the f2 generation produced a nearly 3:1 ratio of purple to white flowers.which principle explains why the ratio is not exactly 3:1
During his pea plant studies, Mendel found that the F2 generation produced a nearly 3:1 ratio of purple to white flowers. The law of segregation is the principle that explains why the ratio is not exactly 3:1.
The law of segregation is the principle that describes how the alleles of a gene are separated during the formation of gametes. Every individual has two copies of each gene, which are called alleles. One allele comes from the mother, and the other comes from the father. During the formation of gametes, the alleles segregate from each other, so that each gamete contains only one allele from each gene.
This explains why the ratio of dominant to recessive traits in the F2 generation is not exactly 3:1. Instead, the ratio is a probabilistic outcome, based on the fact that each individual has two alleles for a particular gene, and each allele has an equal chance of being passed on to the offspring. When the F1 hybrids produce gametes, each allele has a 50% chance of being passed on to the offspring, and the resulting ratio of dominant to recessive traits is determined by probability.
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what characteristics or adaptations did the extinct organisms lack to not be able to survive during the triasic jurrasic
The characteristics or adaptations the extinct organisms lack to not be able to survive during the triassic jurrasic period is adaptation for burrowing, specialized teeth, and dehydration resistance.
What are the adaptations?During the Triassic-Jurassic, extinct organisms lacked certain characteristics or adaptations that prevented them from surviving. The following are some examples of such characteristics or adaptations: Adaptations for Burrowing: Many Triassic species had evolved adaptations for burrowing that allowed them to escape harsh environments or predators. However, such adaptations did not help them survive the Jurassic era's drier and hotter conditions.
Specialized Teeth: Various Triassic species had specialized teeth to eat tough plants, which were abundant during that era. But, after the Permian extinction, new plant types emerged, and these specialized teeth did not allow these species to survive. Dehydration Resistance: Many Triassic species could withstand dehydration, which was a necessary adaptation in arid conditions. However, the Jurassic era had much drier and hotter conditions, which meant that the species could not withstand the new environmental conditions.
In summary, the lack of suitable adaptations for the new environmental conditions, particularly the drier and hotter conditions, was one of the main reasons why certain extinct organisms could not survive during the Triassic-Jurassic era.
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The disaccharide composed of glucose and galactose joined by a glycosidic bond is called
Lactose. A molecule of galactose is combined with a molecule of glucose to form lactose via a 1,4-glycosidic bond. Glucose and galactose combine to form the disaccharide known as lactose.
Two monosaccharide units are joined by glycosidic linkages in either the or orientation to form disaccharides. Lactose, maltose, and sucrose are the three most significant disaccharides. A molecule of glucose and a molecule of fructose are joined to form the compound known as sucrose. Galactose and glucose combine to produce a -14 glycosidic bond, which results in the disaccharide lactose. The formal name of the compound is -D-galactopyranosyl-(1-4)-D-glucose. D-galactose and D-glucose combine to generate 19 distinct disaccharides.
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Reason why leopard and lion can't breed yet they belong same genus
Leopard and lion can't breed yet they belong same genus because they do not belong to the same species. Only members of the same species can breed to give rise to offsprings.
These big-cat hybrids don't seem to exist in the wild (or it would be a rare occurrence). When two people of different sexes and species are placed in the same inclosure, they may happen on purpose or by accident. They might quarrel, stay away from one another, become friends, or even bear cubs together.
After mating with a male leopard in Kolhapur, India in 1910, a lioness gave birth to two cubs. One passed away at the age of 2.5 months, while the other was still alive two years later. The crossbreed was given the name leopon. Yet, from what I could gather, they were unable to procreate any further.
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What is the pair of chromosomes inherited from the mother and the other pair from the father?
A pair of chromosomes inherited from the mother and the other pair from the father is called a homologous chromosome pair.
Homologous chromosomes are similar in size, shape, and gene content and carry the same genes at the same loci, although the specific alleles may differ. In humans, the homologous chromosome pairs form the 23 pairs of chromosomes that contain the genetic material necessary for the development and functioning of the organism.
During sexual reproduction, each parent contributes one set of chromosomes, including one member of each homologous chromosome pair, to their offspring. The process of meiosis ensures that each gamete receives one member of each homologous pair, resulting in genetic diversity in the offspring.
This means that the genetic material inherited from the mother and father are combined in their offspring, leading to genetic variation within a population. The study of homologous chromosomes is essential for understanding genetics, inheritance patterns, and evolutionary biology.
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Describe how substances that pollute air and water could be harmful to humans and
other living organisms.(4 marks)
Surfaces of water and soil can become contaminated by air pollution. This may cause crop death or lower crop yield. Young trees and other plants can die as a result. Acid rain can be produced when airborne sulphur dioxide and nitrogen oxide particles combine with atmospheric water and oxygen.
What contributes to air pollution?Solid, liquid, and certain gases that are suspended in the air are the main contributors to air pollution. These gases and particles can come from factories, dust, pollen, mould spores, volcanoes, wildfires, and vehicle and truck emissions. Particle pollution, commonly known as particulate matter (PM), is made up of microscopic fragments of solids or liquids in the atmosphere. People are responsible for the majority of air pollution, which manifests as emissions from factories, vehicles, aircraft, or aerosol cans. Air pollution also includes secondhand cigarette smoke. These pollution-causing human activities are referred to as anthropogenic sources. Industry sources, power plants that provide electricity, fossil fuel-powered cars, and other stationary sources all contribute significantly to air pollution.To learn more about pollute air, refer to:
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Substances that pollute air and water can be harmful to humans and other living organisms in a number of ways, such as causing respiratory problems, cardiovascular disease, cancer, etc.
What is pollution and cardiovascular disease?Air pollution can irritate the respiratory system and cause inflammation in the lungs, leading to a range of respiratory problems. For example, particulate matter (tiny particles of dust, dirt, and soot in the air) can cause bronchitis, asthma attacks, and other respiratory problems. Exposure to air pollution has been linked to an increased risk of cardiovascular disease, including heart attacks, strokes, and hypertension, and some air pollutants, such as benzene and PAHs, have been linked to an increased risk of cancer. These pollutants can damage DNA and cause mutations that can lead to cancerous cells.
Hence, substances that pollute air and water can be harmful to humans and other living organisms in a number of ways, such as causing respiratory problems, cardiovascular disease, cancer, etc.
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Photosynthesis is essential to most ecosystems because it produces _____, which are used in cellular respiration by most prokaryotes and eukaryotes.
carbon dioxide and carbohydrates
oxygen and carbohydrates
carbon dioxide and proteins
oxygen and proteins
The choice of the right answer to complete the blank line in the question "Photosynthesis is essential to most ecosystems because it produces ___________, which are used in cellular respiration by most prokaryotes and eukaryotes" os oxygen and carbohydrates. Wich because oxygen and carbohydrates are produced during photosynthesis.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds, such as glucose. During photosynthesis, carbon dioxide and water are used as inputs, and oxygen and glucose are produced as outputs. The process occurs in specialized organelles called chloroplasts, which contain pigments such as chlorophyll that capture light energy. This energy is then used to power the chemical reactions that convert carbon dioxide and water into glucose and oxygen.
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what is the main advantage of live attenuated vaccine?
The main advantage of a live attenuated vaccine is that it provides long-lasting immunity with a single dose. They elicit a potent and enduring immunological response.
Live attenuated vaccines contain weakened or modified versions of the virus or bacteria that cause the disease. Because the vaccine contains a live but weakened organism, it is able to replicate and stimulate a strong immune response in the body, similar to a natural infection, without causing the disease itself.
The immune response generated by a live attenuated vaccine is similar to that generated by a natural infection, including both humoral and cellular immunity. This provides long-lasting immunity to the disease, often with just one or two doses, and may provide protection against multiple strains of the pathogen.
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Select the correct statement about the Evolution of Animals.
1 The oldest generally accepted fossils of large a
2 No animal fossils are found in strata formed bef
3 Approximately half the phyla of living organisms
4 All the above
The oldest generally accepted fossils of large animals range in age from 565 to 550 m. Option A
What is evolution in animals?Evolution in animals refers to the process of change in the inherited characteristics of a population of animals over time, which occurs through the mechanisms of natural selection, genetic drift, gene flow, and mutation.
Evolution occurs when some individuals in a population possess advantageous traits that allow them to survive and reproduce more effectively than others, resulting in the gradual accumulation of these traits in the population over generations.
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List in order the parts of the respiratory system
that air passes through as it is breathed out. ( AS IT BREATHE “out”)
Answer:
nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
Explanation:
the air is passed out from alveoli to Bronchioles to bronchi to trachea to larynx to pharynx to nasal cavity to nostrils and the breathed out
Here are the parts of the respiratory system that air passes through as it is breathed out:
LungsBronchial tubesBronchiolesAlveoliTracheaPharynxNasal cavityMouthWhat is the respiratory system?The respiratory system is a complex network of organs, tissues, and structures that work together to facilitate the exchange of gases (oxygen and carbon dioxide) between the body and the environment. Its main function is to provide oxygen to the body's cells while removing carbon dioxide, a waste product of metabolism, from the body.
The respiratory system includes the nose, mouth, pharynx, larynx, trachea, bronchi, bronchioles, alveoli, and lungs. When we inhale, air enters through the nose or mouth and passes through the respiratory tract, where it is filtered, warmed, and humidified.
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What subgroup of protists swims with one flagellum, are mainly photosynthetic, and are common pond dwellers?a) amoebasb) apicomplexansc) ciliatesd) cellular slime moldse) euglenids
A ubiquitous pond inhabitant, the amoebas subgroup of protists swim with a single flagellum and are mostly photosynthetic. Option a is Correct.
Molds that produce slime are considered protists. It consumes decaying plant matter and the bacteria found there. It inhabits soils, woodlands, sewers, and gutters. A photosynthetic protist is not what it is. Although being categorized as fungi for a very long time, slime molds are now part of the class Myxomycetes and belong to the kingdom Protista (the Protists).
Slime molds exhibit characteristics of both fungi and animals. As a result, they are often referred to as fungus animals. They were classified as protistan fungus by modern scientists. While they are in their amoeboid plasmodial stage, they resemble protozoa and resemble real fungus when they produce spores.
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One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic information flows between those types of molecules. Include the results of the processes of transcription and translation
Answer:
Explanation:
RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose, a type of ribose that lacks one oxygen atom
can mandalorians remove their helmets in front of their spouse
In the Star Wars universe, mandalorians are a fictional culture of warriors who wear distinctive helmets as a part of their code of honor and identity.
According to the Mandalorian Creed, "This is the way," they are not supposed to remove their helmets in front of anyone, as it is a sign of vulnerability and an act of disrespect to their traditions. However, there have been instances where Mandalorians have removed their helmets in front of their spouse or significant other, as they consider them to be a part of their family and clan. So, while it goes against the traditional code, it is not entirely impossible for a Mandalorian to remove their helmet in front of their spouse.
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Which of the following is an individual factor that impacts levels of political behavior in an organization? A. Allocation of resources. B. Unclear performance
Neither of options A or B is an individual factor that impacts levels of political behavior in an organization.
An individual factor is something that is specific to an individual employee and affects their behavior within an organization. Examples of individual factors that can impact levels of political behavior in an organization include:
Personal ambitionPerceived self-interestNeed for power or influenceJob dissatisfactionLow trust in managementFear of job loss or insecurityPersonality traits such as narcissism or MachiavellianismThese individual factors can drive employees to engage in political behavior, such as building alliances, manipulating information, or engaging in favoritism, to advance their own interests within the organization.
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Baroreceptors in the brain detect blood pressure, and osmoreceptors detect salt concentration in the blood. When changes occur, these receptors send signals to the pituitary to stimulate or inhibit antidiuretic hormone (ADH) release. If a man becomes lost in a desert without water, the receptors in his brain detect changes to his blood pressure and salt levels in his blood that signal the release of ADH into his bloodstream. Predict how the release of ADH will affect his kidneys and his blood vessels. A. Water reabsorption by kidneys and vasoconstriction of blood vessels B. Water reabsorption by kidneys and vasodilation of blood vessels C. Water excretion by kidneys and vasodilation of blood vessels D. Water excretion by kidneys and vasoconstriction of blood vessels
Water excretion by kidneys and vasodilation of blood vessels. Therefore, option (C) is correct.
The brain's receptors will notice variations in blood pressure and salt levels if a man becomes stranded in a desert without water, which will cause the release of antidiuretic hormone (ADH) into his circulation.
ADH, often referred to as vasopressin, works on the kidneys to boost water absorption and decrease water loss through urine production. To preserve water and stop additional dehydration, ADH release will be reduced in the absence of water. The kidneys will expel more water as a result, increasing urine production and reducing water absorption.
ADH is also involved in controlling blood vessel diameter. In this case, the release of ADH will lead to blood vessel dilatation. Despite the limited water supply, vasodilation aids in boosting blood flow to essential organs in an effort to maintain appropriate blood perfusion.
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Assignment: 04.05 Ancient Greece - Empire of Alexander
The sources mentioned, "Map of Alexander's empire" and "Alexander by the numbers," provide some evidence of Alexander's achievements and influence during his lifetime, which contributes to the argument that he was a great leader.
How can you say Alexander was great?The map of Alexander's empire shows the vast extent of his conquests, which spanned across much of the known world at that time. Alexander was able to defeat powerful empires such as the Persians, which demonstrated his military prowess and strategic genius. His empire also facilitated cultural exchanges between different regions, leading to spread of Hellenistic culture and knowledge.
"Alexander by the numbers" provides numerical data that further emphasizes the scale of Alexander's achievements. Alexander led his army on a march of over 22,000 miles, established over 70 cities, and conquered territories that encompassed over 5 million square miles of land.
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meiosis occurs as a part of _____ reproduction with the resulting daughter cells having a _____ number of chromosomes
Answer:
sexual
genetically identical
identify the labeled structures of human skin. a a drop zone empty. b b drop zone empty. c c drop zone empty. d d drop zone empty. e e drop zone empty. hair follicle sensory receptor arrector pili muscle sweat gland oil gland
Last option. The labeled structure of the human body is given as
a - Hair follicleb - Sensory receptorc - Arrector pili muscled - Sweat glande - Oil glandWhat is the human body made of?Cells are the basic unit of life and the building blocks of tissues and organs. They carry out various functions such as metabolism, reproduction, and communication.
Tissues are groups of similar cells that work together to perform a specific function. There are four main types of tissues in the human body: epithelial, connective, muscular, and nervous.
Organs are made up of different types of tissues that work together to carry out specific functions. Examples of organs in the human body include the heart, lungs, liver, kidneys, brain, and skin.
Systems are groups of organs that work together to perform a specific function. There are several systems in the human body, including the digestive system, respiratory system, circulatory system, nervous system, endocrine system, reproductive system, and musculoskeletal system.
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The receptor sites where THC binds to produce its effect are found in large numbers in the brain area considered to be the seat of human consciousness, which is the
a. reticular activating system.
b. limbic system.
c. prefrontal cortex.
d. medulla-pons region.
The receptor sites where THC binds to produce its effect are found in large numbers in the brain area considered to be the seat of human consciousness, which is the limbic system.
The limbic system is the part of the brain that is responsible for regulating emotions, memories, and motivational behavior. The hypothalamus, hippocampus, and amygdala are some of the brain regions that make up the limbic system. The limbic system is the seat of our emotions and plays a critical role in learning and memory.
The receptors sites of THC bind with the cannabinoid receptors that are located in the brain areas such as the limbic system and hence produce the effect of THC. This effect of THC is due to the activation of the endocannabinoid system. THC stands for Tetrahydrocannabinol which is a psychoactive component found in the cannabis plant. THC is responsible for producing the high feeling when a person smokes or ingests cannabis products
The use of cannabis and THC has medical uses as well. It can be used to treat chronic pain, nausea, glaucoma, multiple sclerosis, epilepsy, and cancer. THC has potential therapeutic effects but it is also considered as a recreational drug because of its psychoactive effects.
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How could early botanists MOST accurately identify hybrids with chromosomes from more than two plant varieties without knowing about the existence of chromosomes?
A.
by testing the plants for their fertility
B.
by comparing traits between generations
C.
by seeing which environments, they survive in
D.
by identifying how they were pollinated
Without being aware of chromosomes, properly identify hybrids containing chromosomes from more than two plant kinds by comparing features between generations.
What is the process of crossing two different plant kinds known as?Intervarietal hybridization is the process of crossing two distinct types. Crossing between two species of the same genus is known as interspecific hybridisation.
Does a hybrid plant possess the traits of both of its parents equally?Hybrids can exhibit hybrid vigour, occasionally developing larger or taller than either parent, and they are not necessarily intermediates between their parents (as in the case of blending inheritance). In animal and plant breeding, when there is interest in the individual parentage, the concept of a hybrid is interpreted differently.
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the gives us the distinct qualitys that make us human and allows us to think about the future to be playful and creative
Answer:
Brains
Explanation:
the brain gives us the distinct quality that make us human and allows us to think about the future to be playful and creative
how many dna molecules are found in one replicated chromosome
In a replicated chromosome, there are two identical DNA molecules, which are called sister chromatids.
During DNA replication, the double-stranded DNA molecule unwinds and separates into two complementary strands. Each of these strands serves as a template for the synthesis of a new complementary strand by the process of semi-conservative replication. The result is two identical DNA molecules, each consisting of one original strand and one newly synthesized strand, that are held together by a centromere to form a replicated chromosome.
When the cell undergoes mitosis or meiosis, the sister chromatids separate and are distributed to daughter cells, ensuring that each cell receives a complete and identical set of genetic information.
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What is the minimum voltage needed to generate muscle contraction? 11)A) stimulus voltageB) contraction voltageC) recruitment voltage D) threshold voltage
The minimum voltage needed to generate muscle contraction is called the threshold voltage. So, option D is correct.
The threshold voltage is the lowest voltage needed to sufficiently depolarize the membrane of the muscle cell in order to produce an action potential and cause a muscle contraction. For skeletal muscle cells, this voltage usually ranges between -50 and -55 millivolts (mV).
A muscle can produce a complete muscular contraction when stimulated with a voltage over the threshold voltage. The stimulus voltage or activation voltage is what is referred to as this voltage. The voltage needed to recruit new muscle fibers is known as the recruitment voltage, whereas the voltage needed to maintain a prolonged muscular contraction is known as the contraction voltage.
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which of the following statements is most accurate select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer. a hydrogen ions released during lactate production are primarily responsible for blood acidosis b an accumulation of adp during exercise will inhibit creatine kinase activity. c during exercise, glycogen stored in non-exercising muscles help preserve blood glucose levels. d in non-muscle cells, lactate an be converted back to glucose, implying that it is an energy source.
The correct answer is during exercise ,glycogen stored in non-exercising muscles help preserve blood glucose levels.
During exercise, glycogen is stored in non-exercising muscles help preserve blood glucose levels. Glycogen is a storage polysaccharide in animals that is composed of glucose molecules. It is stored in the liver and muscles and is used to provide energy during periods of intense physical activity or fasting. Therefore, during exercise, glycogen stored in non-exercising muscles help preserve blood glucose levels.
This statement is most accurate as blood glucose levels are crucial to maintain energy production during exercise. Glycogen is broken down to release glucose that helps to keep the glucose levels up during the exercise. Hence, the statement "During exercise, glycogen stored in non-exercising muscles help preserve blood glucose levels" is the most accurate statement among the given options.
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what in seedless plants, a multicellular organ where meiosis occurs and haploid cells develop
In seedless plants, a multicellular organ where meiosis occurs and haploid cells develop is called the gametophyte. The gametophyte is the dominant generation in the life cycle of seedless plants, such as ferns and mosses.
During the gametophyte stage, haploid spores produced by meiosis develop into multicellular gametophytes, which contain both male and female gametangia (reproductive organs). These gametangia produce haploid gametes, which fuse during fertilization to form a diploid zygote.
The zygote then develops into a multicellular sporophyte, which is the next stage in the life cycle of seedless plants. The sporophyte produces haploid spores through meiosis, which in turn develop into the gametophyte stage, completing the cycle.
In contrast to seed plants, where the sporophyte is the dominant generation, in seedless plants, the gametophyte is the dominant generation, and the sporophyte is dependent on the gametophyte for survival.
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