Which term refers to the initial branches of the trachea that lead into each lung?
a. bronchioles
b. alveoli
c. pleura
d. bronchi
Ans: d. bronchi
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The adhesion step in extravasation is most likely to be mediated by:
A. integrin proteins. B. cell wall proteins. C. collagen. D. keratin.
The right atrium secretes atrial natriuretic hormone (ANH), which stimulates the kidneys to excrete salt and water into the urine. ANH acts antagonistically to what other hormone?
A. cortisol B. aldosterone C. glucagon D. thyroxine E. progesterone Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hormones? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Cytosolic polypeptides are transported to a target organelle via
A) transportin mechanisms. B) post-translational import. C) cotranslational import. D) the importin protein. E) the activity of ribosomes.
When the genome of a particular species is said to include 20,000 protein-coding regions, what does this imply?
A. Any other regions are "junk" DNA. B. There are also genes for RNAs other than mRNA. C. Each gene codes for one protein. D. The species is highly evolved. E. There are 20,000 genes.