DNA sequences are the only way to categorize the diverse group of protists
What will be an ideal response?
False - common structures sue a alveoli
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Researchers studying olfactory and taste receptors have stumbled upon an unusual phenomenon. These receptor proteins are sometimes expressed in other animal tissues in addition to the nose or tongue. For example, the sweet taste receptor T1R2 is expressed in the pancreas. Suggest the best possible explanation for these findings.
A. Damaged receptors are recycled by the body and end up in waste-disposal organs. B. Control of protein expression is imperfect. As long as a receptor doesn't interfere with organ function, expression will not be selected against. C. Chemoreceptors bind molecules that help the body sense and respond to internal phenomena, such as sugar levels in the blood. D. Techniques used to visualize protein expression are imperfect and may lead to false positive results. 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 taste receptors? 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?
A type of horizontal gene transfer in prokaryotes, in which a cell receives bacterial DNA from a bacteriophage, is
A. fixation. B. transformation. C. replication. D. transduction. E. conjugation.
Which classification level is broader than the phylum level?
a. order b. class c. family d. kingdom
How many chromosomes in a normal human cell?
a. 46 b. 11 c. 20 d. 23 e. 46+1