Answer:
stimulus, control center
Explanation:
The control center is the main nervous system of the brain that is used to carry out different sensory, the motor and integration of data.
The stimulus control is the behavioral control that is described as the situations where behavior is triggered by the presence or the absence of any stimulus. Stimulus is the functional reaction in a tissue or any organ.
In the context, the nerve cells in the stomach responds to the stimulus that results from the foods after eating food is a mechanism between the stimulus and the control center.
The picture below shows the devils Millhopper sinkhole in Florida.
The sinkhole was formed when:
A. River water eroded the soil
B. An underground cavern collapsed
C. A hurricane flooded low lying areas
D. Plant roots caused mechanical weathering of rocks
Answer:
B
Explanation:
how does skin defend the body against pathogens brainly?
Answer:
they help to protect us against invading pathogens.
A patient with osteoporosis (reduced bone mass) may have a history of health issues. One issue could be
not enough skin exposure to the sun to make Vitamin D.
weak ligaments.
an increase in the absorption of calcium in the digestive system.
weak tendons.
Answer:
not enough skin exposure to the sun to make Vitamin D.
Explanation:
The correct answer would be not enough skin exposure to the sun to make Vitamin D.
The body makes vitamin D by being exposed to the sun and this vitamin and its metabolite are quite important in the homeostasis of calcium. Calcium on its own is very essential to the formation of bones in the body.
Hence, when the skin is not adequately exposed to the sun, the body becomes short of vitamin D and this disrupts the homeostasis of calcium and the formation of bones in the body. Thus, osteoporosis, also known as weak bones, may result.
Answer:
(A) not enough skin exposure to the sun to make Vitamin D.
Explanation:
♥☺
The branch of life sciences which involves the structure and function of the brain and nervous system, including neurons, nerves, and nervous tissue is called
Answer:
Neuroscience.
Explanation:
Neuroscience is the branch of life sciences which involves the scientific study of structure and function of the brain and nervous system, including neurons, nerves, and nervous tissue. People who study neurosciences is known as neuroscientist. Neuroscientists focus on the human's brain and its impact on the behavior and cognitive functions. Not only is neuroscience concerned with the normal functioning of the nervous system but also concern with neurological, psychiatric and neurodevelopmental disorders.
Hemophilia A is an X-linked recessive disorder. What is the probability that a son will have hemophilia if the parents are a normal man and a woman who is a carrier
Answer:
none
Explanation:
Because the four options are: XX XX Xx Xx. There will be a 50% chance of a carrier but no actual hemophilia.
The probability that the son will have hemophilia if the parents are a normal man and a woman who is a carrier is 50%. The correct option is C.
What is Hemophilia A?A deficiency in the blood clotting factor VIII results in hemophilia A, an inherited bleeding disorder. Lack of factor VIII prevents the blood from clotting effectively to stop bleeding.
Due to a rare disorder called hemophilia, the blood does not clot normally because it lacks enough blood-clotting proteins. If you have hemophilia, you may bleed more profusely and for a longer period of time than you would if your blood clots normally.
A pedigree can be used to trace the X-linked recessive disorder (Xh) hemophilia through the generations. This (D) had hemophilia and passed away as a result of complications. Hemophilia is a bleeding disorder that causes abnormal blood clotting, which lengthens the time it takes for an injury to bleed.
Therefore, the correct option is C, 50%.
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The question is incomplete. Your most probably complete question is given below:
- 0%
- 25%
- 100%
- 50%
- 75%
Complete a Punnett square for the cross-pollination of a female (TT) and a male (Tt). Write in the correct answers to complete the square.
Answer:
The correct answer is -
50% chances of Tt
50% chances of TT
Explanation:
In the given question it is given that there is a cross-pollination between a female (TT) and a male (Tt), which means female has two dominant copies of a trait in her genotype while the male is a heterozygous, the gametes of these genotypes will be:
gametes: T, t and T, T
then cross will be:
T T
T TT TT
t Tt Tt
Thus, the given result shows 1/2 TT and the rest 1/2 Tt by this Punnett square.
What are substances needed for photosynthesis and what are substances are produced during photosynthesis
Answer:
light
Explanation:
Light is the bedrock of photosynthesis the light here is from the sun.
Chlorophyll
carbon dioxide
water
Now the substances produced during photosynthesis are; ATP( Energy),sugar,oxygen.
Answer: The substances needed are Light and carbon dyoxide
Explanation: The plants take in carbon dyoxide, and emit oxygen for animals and humans, and the plant take in light.
The water vascular system of echinoderms The water vascular system of echinoderms functions in locomotion and feeding. functions as a circulatory system that distributes nutrients to body cells. moves water through the animal's body during filter feeding. is bilateral in organization, even though the adult animal is not bilaterally symmetrical.
Answer:
The water vascular system of echinoderms functions in locomotion and feeding.
Explanation:
The water vascular system of echinoderms is responsible for the functions in locomotion and feeding. The water vascular system is a hydraulic system that is used by echinoderms for example sea stars and sea urchins, for the purpose of locomotion (movement), food and waste transportation, and respiration. This system is composed of canals connecting numerous tube feet.
photosynthesis is to chloroplasts as cellular respiration is to
a. chloroplasts
b. cytoplasm
c. mitochondria
d. nuclei
i think it's mitochondria but i just wanna make sure!
10 points!!
Answer:
c. mitochondria
Explanation:
I guess it's due to sunlight being energy and mitochondria uses energy
The insulin/glucagon ratio changed over the course of the experiment indicating changes in glucose storage and changes in ability to increase blood glucose concentration via glycogenolysis and gluconeogenesis. State when glucose storage capability was highest and why.
Answer:water
Explanation:water
How is an organic compound different from an inorganic compound?
Organic compounds contain carbon atoms bonded to other atoms.
Inorganic compounds contain oxygen atoms and hydrogen atoms.
Organic compounds come only from nonliving things.
Photosynthesis is responsible for organic compounds.
Answer:
The correct answer is
" organic compounds come only from nonliving things".
hope it helps you
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have a good day!
Organic compounds contain carbon atoms bonded to other atoms. The correct option is A.
What are organic compounds?Any of a wide area of chemical compounds in which one or many carbon atoms are covalently connected to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
Carbides, carbonates, and cyanides are among the few carbon-containing compounds that are not classified as organic.
The main distinction between organic and inorganic compounds is that organic compounds always contain carbon, whereas most inorganic compounds do not.
Furthermore, almost all organic compounds contain carbon-hydrogen or C-H bonds.
Organic foods are grown without the use of synthetic pesticides, fertilizers, or herbicides.
Organic meat, eggs, and dairy products are derived from animals that have been fed natural feed and have not been given hormones or antibiotics.
Thus, the correct option is A.
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the most common mineral group is broken into the subgroups of ferromagnesium and non ferromagnesium
Answer: The answer would be Silicate
Explanation: They are made out of silicon and oxygen
Neurospora is an ideal organism to study the effects of genetic mutations because of several reasons. What is one of these
Answer:
Due simple growth.
Explanation:
Neurospora is an ideal organism to study the effects of genetic mutations because it is easier to growth and are simple. Neurospora crassa is used as a model organism because it has a haploid life cycle and easier to grow that makes genetic analysis simple. Analysis of genetic recombination is facilitated by the ordered arrangement of the products of meiosis in Neurospora ascospores so due to simple growth and haploid life cycle we can considered Neurospora is an ideal organism.
What organisms are in the chlorophyta reichenbach phylum
Answer:
Several species of Chlorophyta live in symbiosis with a diverse range of eukaryotes, including fungi (to form lichens), ciliates, forams, cnidarians and molluscs. i hope this helps
If two individuals were heterozygous for freckles, which are a dominant autosomal trait, what percentage of their offspring would you expect to have freckles
Answer:
75%
Explanation:
Firstly, an autosomal dominant trait is a trait the becomes expressed in the presence of only one affected allele, which is the dominant allele. Freckles is said to be an autosomal dominant trait meaning that the presence of the dominant allele (F) makes a person have the condition.
According to this question, If two individuals that are heterozygous for freckles cross i.e. Ff × Ff, the following proportion of offsprings will be produced: FF, Ff, Ff and ff (see punnet square).
From the genotypic observation of the produced offsprings:
FF, Ff - possess freckles
ff - do not possess freckles
Since, 3 (FF, Ff and Ff) of 4 offsprings possess freckles, the percentage of offsprings expected to have the condition will be:
3/4 × 100 = 75%
2. Why are humans considered animals?
A. Their zygotes undergo changes to turn into a blastula.
B. Human cells have cell walls and are unable to move.
C. Humans can reproduce asexually when under stress,
D. Animals and humans are both uni-cellular organisms.
Answer:
It's A
Explanation:
Had it on a test
Humans are considered animals because as in animals zygotes after cell division turns into a blastula, hence option a is correct.
What are animals?More than any other species, humans are capable of learning new things. Indeed, the majority, but not fully, of what distinguishes us from other animals is anchored in language.
In addition, because we have a backbone, humans are considered to be members of the chordate animal phylum.
The zygote is split into the blastula after fertilization, three germ layers develop in the blastula, which in some species is a hollow ball of cells, during a process known as gastrulation.
Therefore, humans are classified as members of the primate order within the animal group and having the blastula stage, hence option a is correct.
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❗️❗️❗️URGENT - HELP PLEASE ❗️❗️❗️
Answer:
C 5√32 = 2
Explanation:
When converting to radical form using the formula [tex]a\frac{x}{n} = \sqrt[n]{a^{2} }[/tex] the outcome in the exact form comes out as [tex]\sqrt[5]{32}[/tex] and its decimal form from this equation is equal to 2.
A simple test to differentiate between Staphylococcus and Streptococcus is the addition of H2O2 to a colony to see if bubbles form, which are positive for catalase. Which organism would be positive
Answer:
The Correct answer is B, Staphylococcus.
Explanation:
The Catalase test is used to differentiate Staphylococci (Catalase positive) from Streptococci (Catalyst negative). The enzyme catalase is produced by bacteria that respire using oxygen and protects them from the toxic by-products of oxygen metabolism.
Catalase positive bacteria includes strict aerobes as well as facultative anaerobes. Catalase negative bacteria maybe anarobes or facultative anarobes that only ferment and don't respire using oxygen as terminal electron acceptor.
Catalase converts hydrogen peroxide to water and oxygen gas. Though both Staphylococcus and Streptococcus are gram positive bacteria, only Staphylococcus produces catalase enzymes.
when measuring the blood pressure, the cuff is deflated until two consecutive beats are heard through the stethoscope. This measurement reflects
Answer: Systolic pressure.
Explanation:
Every time the heart beats, it pumps blood into the arteries, which are vessels through which blood circulates from your heart to your tissues with the oxygen and nutrients they need. Blood pressure is the force of the blood pushing against the walls of the arteries, and is highest when the heart beats, pumping blood, which is measured as systolic pressure (i.e., when the heart contracts). On the other hand, diastolic blood pressure refers to the pressure of blood in the artery when the heart relaxes between beats (i.e., when the heart relaxes). Since there are two types of pressures, blood pressure readings are given in two numbers, with the top number being the systolic pressure and the bottom number being the diastolic pressure.
For example, if the systolic pressure measured in a person is 125 millimeters of mercury (mm Hg) and the diastolic pressure is 85 mm Hg, the blood pressure is recorded as 125/85.
So, the systolic blood pressure is registered with the stethoscope when the cuff is deflated. When two heartbeats are heard, the pressure gauge reading is recorded. When the heartbeat ceases, the cuff pressure is released and the diastolic pressure is measured at this time.
which of the following structures helps our sense of balance
Answer:
D answer is correct
Explanation:
semi circular helps our sense of balance
Answer:
eardrum
Explanation:
The ear is a sensory organ that picks up sound waves, allowing us to hear. It is also essential to our sense of balance: the organ of balance (the vestibular system) is found inside the inner ear. It is made up of three semicircular canals and two otolith organs, known as the utricle and the saccule
a) Arrange the seedless vascular plants, angiosperms, non-vascular plants and gymnosperms in order according to the complexity of their features.
b) Arrange the same groups in the order in which they appear in the fossil record.
c) Compare the order of your two lists. What is the pattern?
Answer:
Cover the classifiction of plant on the evolution of history of significant feature in plant Gymnosperm evolved to have seed but not have flowers me. in the other way evolved seeds vascular tissue.
An amoeba is a single-celled organism that feeds on algae, plant cells, and bacteria. When an amoeba feeds, it first makes contact with the food particle. Next, the amoeba starts to surround the particle. Once the particle is completely engulfed, it is surrounded by a layer of the amoeba's membrane, forming a vesicle. The pH in the vesicle is then lowered and the contents are degraded.
What type of transport is involved in this process?
A.
endocytosis
B.
diffusion
C.
passive transport
D.
exocytosis
Answer:
A. endocytosis
Explanation:
Endocytosis is the type of transport that is involved in this process because it engulf the food material. Amoeba engulfs food particles with the help of its pseudopodia which are the projections of cell membranes. A food vacuole is formed around the food particle. This process of engulfing a matter by the projections of the cell membrane to form a vacuole is called endocytosis.
Because the cells of skeletal muscle are relatively large and cylindrical in shape, they are also known as
Answer:
fibers or tubules.
Explanation:
What process facilitates locomotion for the ovum?
Question 6 options:
a. Once the ovum leaves the ruptured follicle it is captured by the uterus and then directed into the Fallopian tube, where it is pushed along towards the oviducts.
b. Once the ovum leaves the ruptured follicle it is captured by the fimbriae and then directed into the Fallopian tube, where it is pushed along towards the uterus via cilia.
c. Once the ovum leaves the ruptured follicle it is fully matured and propels itself into the Fallopian tube, where it moves along towards the uterus.
d. Once the ovum leaves the ruptured follicle it is captured by the cervix and then directed into the Fallopian tube, where it is pushed along towards the uterus via cilia.
The correct answer is B. Once the ovum leaves the ruptured follicle it is captured by the fimbriae and then directed into the Fallopian tube, where it is pushed along towards the uterus via cilia.
Explanation
Ovulation is a process in which the ovum is released from the ruptured follicle, there it is captured by the fimbriae and taken to the fallopian tubes (where it will be fertilized by sperm) and then it will reach the uterus (the place where the fetus will grow) through the cilia. Additionally, this process is in which the woman is fertile to conceive and occurs around the fourteenth day of the menstrual cycle (which lasts twenty-eight days).
Weak carbonic acid naturally found in rainwater will cause _____________.
A. Slow chemical weathering
B. Rapid physical weathering
C. Slow physical weathering
D. Rapid chemical weathering
Answer:
slow chemical weathering
All of the given answer options represent organisms that could coexist in an ocean
ecosystem. In this hypothetical ecosystem, which organism will receive the least amount of
energy in the food pyramid?
Tuna
Great white shark
Seal
Anchovy
Answer:
B. Great white shark
Explanation:
In any food pyramid, the organism at the top of the food pyramid usually gets the least amount of energy in the food pyramid, while those at the bottom have the highest energy in the food pyramid. This is because, as energy moves up the pyramid, some are lost.
In an hypothetical ecosystem, the great white shark will top the food pyramid. Therefore, it would get the least amount of energy in the food pyramid.
The ______ regulates the amount of glucose circulating in the blood by either synthesizing glycogen or breaking down glycogen.
Answer:
Glucagon
Explanation:
It is a peptide hormone secreted by the pancreas, raises blood glucose levels
Glucagon stimulates glycolysis, the breakdown of glycogen and the export of glucose into the circulation
The image below shows one of the earliest stages of DNA replication. What
role does helicase play in DNA replication?
A. Helicase breaks the hydrogen bonds and unwinds a section of DNA.
B. Helicase connects the floating nucleotides to the template strands.
C. Helicase checks the base pairs in each new strand of DNA.
D. Helicase bonds together pieces of DNA as new strands form.
Answer:DNA helicases are also called molecular motors. They unwind the DNA with the help of ATP hydrolysis, and thus facilitate the replication and transcription processes. ... Studies have suggested that DNA helicases may play a role in plant DNA recombination, as it is prominent during the meiotic prophase of plants.
Explanation:
Role played by Helicase in DNA Replication is to break down the hydrogen bonds and unwinds a section of DNA.
What is DNA?
DNA, or deoxyribonucleic acid, is the hereditary material in humans located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.
The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.
What is DNA Replication?In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule.
DNA replication occurs in all living organisms acting as the most essential part for biological inheritance and it is essential for cell division during growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA.
The cell possesses the distinctive property of division, which makes replication of DNA essential.
DNA is made up of a double helix of two complementary strands. The double helix describes the appearance of a double-stranded DNA which is composed of two linear strands running opposite to each other and twist together to form.
During replication, these strands are separated. Each strand of the original DNA molecule then serves as a template for the production of its counterpart, a process referred to as semiconservative replication.
As a result of semi-conservative replication, the new helix will be composed of an original DNA strand as well as a newly synthesized strand.
Cellular proofreading and error-checking mechanisms ensure near perfect fidelity for DNA replication.
What is the role of Helicases in DNA Replication?Helicases are enzymes that bind and remodel nucleic acid or nucleic acid protein complexes.
Helicases are of two types- DNA Helicases and RNA Helicases.
Role of Helicases:
- Separate the double stranded DNA into single one to allow copying.
- Initiate synthesis at the origin of unwinding
- Helicases use the energy stored in a molecule called ATP, which serves as the energy currency of cells, to break the bonds.
- DNA helicases also function in other cellular processes where double-stranded DNA must be separated, including DNA repair and transcription.
- RNA helicases are involved in shaping the form of RNA molecules, during all processes involving RNA, such as transcription, splicing, and translation.
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What is the product P
Why can't cellular respiration occur without photosynthesis? (2 points)
Photosynthesis produces carbon dioxide, which is used in cellular respiration.
Cellular respiration requires carbon dioxide, which is produced by photosynthesis
Photosynthesis produces ADP, which is used in cellular respiration.
Cellular respiration requires glucose, which is produced by photosynthesis.
Answer:
d
Explanation:
