Answer:
c. Beginning with the return from the systemic circulation, blood enters the right atrium.
a. Blood enters the right ventricle from the right atrium through the right atrioventricular valve which is also known as the tricuspid valve
d. The right ventricle contracts next, which forces blood up through the right semilunar valve which is otherwise known as the pulmonary valve .
e. After circulating through the pulmonary capillaries, the blood returns to the left atrium.
f. From the left atrium, blood moves through the left atrioventricular valve which is also referred to as the bicuspid or mitral valve.
b. From the left ventricle, the blood is pumped up to aorta the through the left semilunar valve which is sometimes referred to as the aortic valve.
Explanation:
c. Beginning with the return from the systemic circulation, blood enters the right atrium.
a. Blood enters the right ventricle from the right atrium through the right atrioventricular valve which is also known as the tricuspid valve
d. The right ventricle contracts next, which forces blood up through the right semilunar valve which is otherwise known as the pulmonary valve .
e. After circulating through the pulmonary capillaries, the blood returns to the left atrium.
f. From the left atrium, blood moves through the left atrioventricular valve which is also referred to as the bicuspid or mitral valve.
b. From the left ventricle, the blood is pumped up to aorta the through the left semilunar valve which is sometimes referred to as the aortic valve.
How does the movement of particles of matter change when temperature increases?
Decreases
Increases
Increases then decreases
Does not change
Answer:
Increases
Explanation:
The movement of particles of the matter increases with the increase in temperature.
The particles gain kinetic energy with increasing temperature and move in faster rate.
For example: When we blow a balloon with our mouth, we increases the temperature inside the balloon, the particles in the balloon gain kinetic energy that leads to the faster movement of gas particles in the balloon and they collide with each other and surface of balloon, after a peak the balloon get burst because of high kinetic energy and high collision.
Hence, the correct answer is "increases".
In the DNA isolation process, cells are mixed with sodium chloride (i.e. NaCl) because the sodium (Na ) neutralizes the negative charge of DNA.
a. True
b. False
Answer:
this is true it neutralise easily
It is true that in the DNA isolation process, cells are mixed with sodium chloride (i.e. NaCl) because the sodium (Na ) neutralizes the negative charge of DNA.
What is DNA isolation?DNA extraction is a method of separating DNA from cell membranes, proteins, and other cellular components using physical and/or chemical methods from a sample. In 1869, Friedrich Miescher isolated DNA for the first time.
The ability to extract DNA is critical for studying the genetic causes of disease and developing diagnostics and drugs.
It is also required for forensic science, genome sequencing, detecting bacteria and viruses in the environment, and determining paternity.
Because sodium (Na+) neutralizes the negative charge of DNA, cells are mixed with sodium chloride (i.e. NaCl) during the DNA isolation process. It makes homogenization easier.
Thus, the given statement is true.
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A graduate student studying biology at the University of Nebraska has identified a new species of spider found only in Eastern Nebraska around Omaha. The graduate student determines that the spider has six homologous pairs of chromosomes. How many chromosomes would a cell in that spider have during metaphase of mitosis?
Answer:
12 chromosomes
Explanation:
Mitosis is a type of cell division that involves the formation of two genetically identical daughter cells. The two daughter cells are genetically identical in the sense that they contain the same number of chromosomes as the parent cell. Mitosis involves four stages namely: Prophase, Metaphase, Anaphase and Telophase.
In the metaphase stage as stated in this question, homologous chromosomes align at the equator of the cell called cell plate, before each chromatids are pulled apart by microtubules at the Anaphase stage.
According to the question, the spider being worked on has 6 pairs of chromosomes, which will align at the cell's equator during metaphase stage of mitosis. Since the replicated chromosomes (chromatids) are yet to separate to opposite poles of the cell, the cell will still contain 12 chromosomes at the metaphase stage.
N.B: Each chromosome contains 2 chromatids or replicated chromosome, which will be separated at the Anaphase stage. Each chromatid will be an individual chromosome after cytokinesis.
You perform a test cross of the dihybrid AaBb and score the phenotypes of 1000 progeny. Assuming independent assortment, how many of the progeny do you expect to display the dominant phenotype for both the A and B genes?
Answer:
4
Explanation:
The number of progeny expected to display the dominant phenotype for both the A and B genes should be 4.
A test cross usually involves crossing an individual whose zygosity is in doubt with an individual that is recessive for both alleles so as to ascertain the zygosity of the former. Hence, for a test cross involving AaBb:
AaBb x aabb
Progeny:
4 AaBb
4 Aabb
4 aaBb
4 aabb
Therefore, the number of progeny expected to display the dominant phenotype for both the A and B genes is 4.
Give four reasons why th toe operating system pivotal in teaching and learning
The correct answer to this open question is the following.
The four reasons why the operating system is pivotal in teaching and learning are the following.
1) Operating systems are the foundation of the computer. Without the operation system in place, you could not run any program.
2) The operating system presents an interface that allows users to perform many tasks at the same time, with all degrees of complexity.
3) The operating system permits the installation of all kinds of software so the user could work on practically anything.
4) Applications for sound, video, graphics, mathematics, and many other activities can be run due to the operating system.
In these times of digital education, the operation system of a computer allows users to do all the needed activities to fulfill the goals of teaching and learning. From video classes, team meetings, corporate dates, continuing training activities, and many more, the capacity of a good operating system is what makes it easy for you to accomplish your goals.
Which statement correctly compares the "Analysis" and "Conclusion" sections of a lab report?
Answer:
Hello. You did not enter the answer options, but I can help you by stating that the correct comparison between "analyze" and "conclusion" is one that shows that "Analysis" is able to compare specific research data, while "conclusion" is able to suggest additional research to arrive at more concrete data.
Explanation:
In a scientific research, the "Analysis" section is where the specific research data and the interactions and information that can be extracted from them are analyzed, in a succinct and explanatory way. This section is very important to present how these data were acquired and how they work within the theme developed in the research.
The section called "conclusion", in turn, presents the section where the research will conclude the established theme, showing an affirmation discovered through the research or suggesting additional research that will help to establish an efficient conclusion.
What are the phagocytes cell in the skin
Answer: The mononuclear phagocyte system (MPS), which includes macrophages and dendritic cells, has also been implicated in the regulation of skin salt homeostasis and blood pressure [35]
Explanation:
Answer:
The phagocytes cell in the skin are the monocytes, macrophages, neutrophils, tissue dendritic cells and mast cells. One litre of human blood contains about six billion phagocytes.
When pathogens are detected, the immune system produces millions of white blood cells, which fight the infection. Blood vessels near the wound expand, and white blood cells move from the vessels to enter the infected tissues. Many of these white blood cells are phagocytes which engulf and destroy bacteria.
The four principal types of stress are __________.
A. frustration, conflict, pressure, and anxiety
B. frustration, conflict, pressure, and change
C. anger, anxiety, depression, and annoyance
D. frustration, conflict, depression, and annoyance
Answer:
A
Explanation:
frustration, conflict, pressure, and anxiety
The four principal types of stress are frustration, conflict, pressure, and anxiety.
What is Stress?This is characterized by a feeling of emotional or physical tension in individuals.
There are four types of stress which are listed above thereby making option A the most appropriate choice.
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Choose a strategy to clone genes known only by a mutant phenotype in organisms with highly efficient transformation procedures and relatively small genomes.
a. cloning by complementation
b. direct sequencing of the mutant genome
c. PCR of the gene and transformation of an organism
d. cloning using a specific cloning vector
Answer:
Option a (cloning by complementation) `would be the correct choice.
Explanation:
In species containing extremely efficient transforming techniques as well as comparatively small genomes, cloning by rearrangement testing is performed to clone gene products mostly by a mutated gene as the rearrangement test was being used to detect mutations.This strategy for cloning through mechanism begins with identifying another yeast mutant that affects something like a plasmid representing a cloned genetic material.The other options in question aren't relevant to the particular circumstance. Therefore the answer to the above seems to be the right one.
(06.03 LC) Which of the following is an example of how HIV can be transmitted from one person to another? Contact between infected blood and a mucus membrane Contact between infected saliva and an open wound Contact between infected blood and skin Contact between infected saliva and lining of mouth
Answer:
i believe the answer is contact between a infected blood and a mucus membrane
Explanation:
why are g protein important for drug discovery?
Answer:
G protein - coupled receptors(GPCRs)n belong to a large family of signaling proteins that mediate cellular reponses to most hormones ,metabolites,cytokines and neuotransmitters and therefore serve as fritful targets for DRUGS DISCOVERYS.
Explanation: histamine(HRH1),serotonin dopamine,opiod and adrenergic receptors.
I HOPE IT'S HELPS YOU TO UNDERSTAND
Nervous tissue is the predominant tissue type of which three organs Nervous tissue is predominate tissue type of which three organs
Answer:
Brain, spinal cord, and nerves.
Explanation:
While they work together, each is an individual system.
Nervous tissue is found in the brain, spinal cord, and nerves. So, nervous tissues predominantly found in these three types of tissues.
What is Nervous Tissue?Nervous tissues are the group of cells in the nervous system which controls the body movement , sends and carries signal to and from different parts of the body . It has a role in controlling bodiliy function such as Digestion.
It is group into two categories : Neurons and Neuroglia.
Neurons transmit electrical impulses while neuroglia do not; it has many other function including supporting and protecting neurons.
Nervous tissue makes the nervous system which is subdivided in several two categories .
1. The central nervous system (CNS)
2. The peripheral nervous system (PNS)
1. CNS is composed of the brain and spinal cord where it coordinates information from all areas of the body and sends nerve impulses that control all bodily movements.
2. PNS consists of peripheral nerves which are branched all throughout the body and it connects the CNS to the rest of the body . It is directly responsible for controlling movements of specific parts of the body.
Thus, nervous tissue is found in the brain, spinal cord, and nerves. So, nervous tissues predominantly found in these three types of tissues.
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A mutation that hides the effect of another mutation at a site that is distinct from the site of the original mutation, but with in the same gene. This mutation is best described as a
Answer:
The correct answer is intragenic suppressor mutation.
Explanation:
A suppressor mutation partially or completely converses the effects of a different mutation. A suppressor mutation is of two kinds, that is, an intragenic suppressor and an intergenic suppressor. An intragenic suppressor converses the influence of a mutation at a distinct site in a similar gene.
On the other hand, an intergenic suppressor converses the influence of a mutation at a distinct locus of the gene. It is the intragenic suppressor mutation, which takes place in a similar gene where the occurrence of the first mutation had taken place. Therefore, the mutation, which hides the influence of another mutation at a location, which is different from the location of the original mutation, but taking place in a similar gene can be illustrated as the intragenic suppressor mutation.
Why are G proteins found in cell membrane of the cell ?
Answer:
It is found in cell membrane because to bind extracellular substances and transmit signal.
The LMand LNalleles at the MN blood-group locus exhibit codominance. Give the expected genotypes and phenotypes and their ratios in progeny resulting from the following crosses.a.LMLM x LMLNb.LNLN x LNLNc.LMLN x LMLNd.LMLN x LNLNe.LMLM x LNLN
Answer:
Please find the expected genotypes and phenotypes of the progenies of each cross below.
Explanation:
In the MN blood-group locus of the gene, alleles LM and LN exhibit codominance i.e one allele is not dominant or recessive to the other, hence, they are both expressed when they occur in a heterozygous state (MN).
Considering the following crosses (find the punnet square attached);
a)LMLM x LMLN - The progeny are LMLM and LMLN in the genotypic ratio 1:1. Phenotypic ratio is Blood type M (1) : blood type MN (1)
b) LNLN x LNLN - The progeny are all LNLN offsprings with a phenotypic and genotypic ratio 4:0. All offsprings will have a blood type N (4)
c) LMLN x LMLN - The progenies are LMLM, LMLN and LNLN in the genotypic ratio 1:2:1 respectively. The phenotypic ratio is Blood type M (1) : L
Blood type MN (2) : Blood type N (1)
d) LMLN x LNLN - The progeny are LMLN and LNLN with genotypic ratio 1:1 and phenotypic ratio blood type MN (1) : blood type N (1)
e) LMLM x LNLN - The progeny are all LMLN offsprings with penotypic ratio blood type MN (4)
Jeremiah is on a school trip to a forest preserve. According to the urban heat island effect, as Jeremiah leaves the city and heads toward the nature preserve, the temperature should (first drop-down) . That's because large cities (second drop-down) more heat than rural areas. When Jeremiah arrives at the preserve, he immediately notices the effects of solar radiation. The blacktop in the parking lot feels (third drop-down) the green grass where his class will eat their picnic lunch. →First drop -down options 1. Remain the same 2. decrease 3. increase Second drop-down options 1. absorb 2. transmit 3. reflect third drop-down options 1. hotter than 2. cooler than 3. same temperature as←
Answer:
2. decrease
3. reflect
1. hotter than
Explanation:
As Jeremiah will move towards nature preserve the temperature will decrease because heat once absorbed as energy is reflected by a temperature rise and large cities reflect more heat than rural areas. It is so because large cities have buildings and other structures that absorb fore heat and reflect more heat.
The blacktop will be hotter than the green grass because blacktop reflects more heat in comparison to green grass.
Hence, the correct answer is:
2. decrease
3. reflect
1. hotter than
Answer:
decrease
reflect
hotter than
Explanation:
on terms of genetic similarity, which list is ordered from most similar to least similar b. cousin, uncle, mother, non twin sibling, identical twin
Answer:
Identical Twin, non twin sibling, Mother, Cousin, Then Uncle
Explanation:
Why photosynthesis can't take place in such an environment , where there is no oxygen..? And exactly why trees need oxygen for photosynthesis ?
Answer:
Photosynthesis is a chemical process that leads to the release of oxygen as a by-product and is necessary for cellular respiration
Explanation:
The plants produce or make oxygen form the wastes of starch, sunlight carbon dioxide, and water. In order to burn the sugar that is stored in the plants, it needs to have sunlight which requires oxygen. As the break down of sugar C6 H12 O6 to CO2 and H2O needs O2 to do it. Which is called cellular respiration. This is also stated by the first law of thermodynamics that energy cannot be created and neither destroyed but transforms itself. Photosynthesis is the chemical process that is used to convert this chemical energy which makes carbon and water into glucose and oxygen is released as a by-product.Every interaction with the outside world is because of A) epithelial tissue B) connective tissue C) nervous tissue D) muscular tissue
Answer:
A cutaneous membrane is a multi-layered membrane composed of epithelial and connective tissues. The apical surface of this membrane exposed to the external environment and is covered with dead, keratinized cells that help protect the body from desiccation and pathogens....
Which of the following is not a function of the digestive system? Select one: A. mechanical processing B. absorption C. secretion D. ingestion E. filtration
Answer: option E.
Filtration.
Explanation:
Digestive system consist of the gastrointestinal tracts, organs that help to breakdown large complex consumed food into to small pieces which can easily be absorbed by the body.
Filtration is not a function of digestive system because it play a major role in circulatory system which help in movement of solutes out of the capillary into interstitial fluid by separating the bigger particles from the smaller particles, filtering out nitrogenous waste and regulating salt concentration .
I need help, please!!
Answer:
Aerobic respiration ; Respiration using oxygen
Mitochondria ; Where respiration takes place
Anaerobic respiration ; Respiration in the absence of oxygen
Lactic acid ; Substance that build up in the muscles during anaerobic respiration .
Fermentation ; Process that converts sugar into alcohol
Explanation:
I hope it helps :)
Answer:
aerobic respiration - resperation using oxygen
mitochondria - where resperation takes place
anaerobic respiration - resperation in the absence of oxygen
lactic acid - substance that builds up in muscles during anerobic resperation
fermentation - process that converts sugar into alcohol
as Ethanol fermentation is also known as alcoholic fermentation
( hope I helped you ) :)
Biologists designed an experiment to test the effects of compost on the development of root crops
Answer:
The crop has good yield because Compost has a good effect on root crops.
Explanation:
Compost has a great effect on the development of root crops such as onion, potato, garlic and ginger etc. Compost provide nutrients to these crops as well as soften the soil due to which they grow rapidly. It also improved ventilation, soil structure and soil texture which is very necessary for the crop. Due to ventilation, oxygen gas is available to the roots which increases growth and yield of these crops. Compost also retain water and nutrients so they are available to the roots. So those plots where compost is applied observed increase in yield as compared to other plots.
Which organelle is labeled I? cell membrane ribosome endoplasmic reticulum nucleus
Answer:
"nucleus" seems to be the correct answer.
Explanation:
The nucleus seems to be a significant case wrapped through a double membrane that distinguishes these from the cytoplasm, the nuclear shell. The membranes combine throughout a few areas, allowing the interchange of substances between some of the cytoplasm as well as the nucleus, steps given designated "nuclear pores".The nuclear shell is consistent with either the concentrated endoplasmic reticulum, thereby bonding with either the nucleus.Answer:
NucleusExplanation:
The lactic acid generated in the body of a cricketer is first converted to glycogen in 1) Muscles 2) Liver 3) Blood 4) Both 2 and 3
Answer:
2) liver
Explanation:
the bloods transports the lactic acid to the liver to be converted into glycogen
Some people use the terms "cell cycle" and "mitosis" as if they were the same thing. Which of these best describes why they are not the same?
a. the cell cycle is just a stage of mitosis
b. mitosis and the cell cycle are different types of cell division that occur in different of cells in a multicellular organism
c. mitosis is a sequence of events within the cell cycle that separates the genetic material
d. mitosis is a type of cell division that occurs in eukaryots and the cell cycle takes place in prokaryots
Answer: C. Cells in meiosis have unique genetic information
Explanation: Meiosis is the cell division that forms four daughter cells from one parent cell. It includes two successive divisions called as meiosis I and meiosis II. Crossing over during prophase I of meiosis I imparts new gene combinations to the daughter cells of meiosis. Hence, daughter cells formed by the end of meiosis have some new gene combinations, that is, unique genetic information.
Outside the lining of the alveolus is blood, which is at a gauge pressure of 5 mmHg, while air is contained inside the alveolus. What is the absolute pressure inside the alveolus
Answer:
765 mmHg
Explanation:
The gauge pressure = 5 mmHg
To get the absolute pressure we use the relationship
[tex]P_{ab}= P_{g}+ P_{atm}[/tex]
where [tex]P_{ab}[/tex] is the absolute pressure = ?
[tex]P_{g}[/tex] is the gauge pressure = 5 mmHg
[tex]P_{atm}[/tex] = atmospheric pressure = 760 mmHg
substituting, we have
[tex]P_{ab}[/tex] = 5 mmHg + 760 mmHg = 765 mmHg
When arterial blood pressure falls the body compensates to raise the blood pressure. Explain this process.
Answer:
the body distributes more blood to the body surface where it can ... Changes in diameter affect peripheral resistance, pressure, and flow, which ... the aorta and carotid arteries: The aortic sinuses are found in the walls of the ... When blood pressure drops too low, the rate of baroreceptor firing decreases.
Explanation:
who is the father of Genetic
Answer:
hey there
Explanation: answer is gregor mendal is the father of genetic in 19th century.
Answer:
Gregor Johann Mendel
5.Do the differentiated teeth of the dolphin have specialized functions like our teeth and most other mammals
Answer and Explanation:
Dolphins are homodont. This means that all their teeth are all equal. They do not differentiate between each other as the human´s teeth or other mammal´s teeth.
Dolphins have different feeding strategies according to the species. They might be suction feeders, or they might catch their prey using the jow and mandible occlusion strenth.
Dolphins that catch their prey by using their jow and mandible do not chew, so they use teeth mostly to catch their prey and manipulate them before swallowing them. This is why they do not need differentiated teeth. Because they just use them to catch and manipulate.
Those dolphin species that are suction feeders do not need teeth to catch their prey because they just suck them. Most of these species only have a few teeth, mostly in their jows. These teeth are used for fighting with other individuals. Inter- and intra-specific fights among animals of the same gender and age are very common. It is believed that as these species do not need teeth for catching their prey, they evolved loosing most of them but those needed during confrontations. This is the case of Grampus griseus, Risso´s Dolphin, that only have 5 to 7 teeth in their jows.
explain where the pericardium is found and what it does for the heart
Answer:
the pericardium is found in your heat Problems can occur when the pericardium becomes enflamed or fills with fluid.
