Answer: Despite the fact that we have gobs of prokaryotic cells living inside and on us, humans are still categorically eukaryotic organisms. This means that all human cells—including those found in the brain, the heart, the muscles, and so on—are also eukaryotic.
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Answer:
B
Explanation:
The structure of the mitochondrion is key to the process of aerobic (in the presence of oxygen) cellular respiration, especially the Krebs cycle and electron transport.
Answer:
Some of these sentences both refer to the same term.
1. The epithelial membrane that lines the closed ventral cavities of the body. - 5. Makes up the pleura and pericardium. This is called the <u>serous membrane</u>.
2. The epithelial membrane that lines body cavities open to the exterior membrane
. - 4. Found lining the digestive and respiratory tracts. These statements refer to the <u>mucous membrane</u>.
3. Consists of keratinized stratified squamous epithelium. - <u>cutaneous membrane</u>.
6. Lines blood vessels and the heart. - <u>endothelium.</u>
Explanation:
All of these membranes are formed by epithelial tissue - one of the four basic tissues found in the human body, with important tasks that many times <u>give the organs they're part of their main function</u>.
<u>The epithelium can vary in shape and size in order to adapt to the necessities of the organ</u>. If the organ needs protection from abrasions, like the skin or the stomach, this tissue will have many layers and be called "<em>stratified epithelium</em>". On the other hand, an organ with the function to exchange substances, like the blood vessels or the alveoli, will have only one layer of epithelium, to ease the diffusion of gases and other molecules.
The other three basic tissues are: connective tissue, muscle tissue, and nervous tissue.
Answer:
Part 1:
The mother’s genotype is ii, rr, MN
The father’s genotype is IAIA/IAi, Rr, MM
Part 2:
Approximately 1/32 (3.125%) of children can be expected to have the stated blood types.
Explanation:
Part 1:
The mother has blood types 0, Rh- and MN. Therefore, her genotype has to be ii, rr, MN.
The father has ABO type A. His ABO genotype may therefore be either IAIA or IAi, as both are compatible with type A offspring with a type 0 mother. His Rh genotype must be rr, since his Rh- child necessarily has to have inherited one r allele from each parent. Finally, his MN genotype has to be MM since both alleles are codominant.
Part 2:
Using the given data, we build the following Punnett chart:
IA R N IA r N i R N i r N
IA R M
IA R N
IA r M
IA r N
IB R M
IB R N
IB r M X
IB r N
Note that, of all 32 possible combinations, only a single one of them (marked with “X” produces a genotype which matches the desired blood type, as follows:
genotype: IBi, rr, MN
blood type: B, Rh-, MN
Answer:
The heart consists of four chambers organized into two pumps (right and left) for the purpose of providing blood flow to the systemic and pulmonary circulations. The right atrium receives deoxygenated blood from the entire body except for the lungs via the superior and inferior vena cavae!
The heart has four chambers: two atria and two ventricles.
The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
The right ventricle pumps the oxygen-poor blood to the lungs.
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
The left ventricle pumps the oxygen-rich blood to the body.
Hope this helps!