Which of the following is stimulated by thyroxine?

a. metabolism
b. gamete production
c. fight-or-flight response
d. growth of body tissues


a. metabolism

Biology & Microbiology

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An extensive study was conducted on identical twins who were separated at birth. Among other things, the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests. This can best be described as an example of how  

A.  mutation alters phenotype. B.  environment alters phenotype. C.  environment alters genotype. D.  mutation alters genotype. E.  pleiotropic genes affect more than one trait. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about genotype and phenotype? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?

Biology & Microbiology

Although Deinococcus-Thermus phyla stain Gram-positive, which reason(s) exclude them from this Gram type?

A. They lack teichoic acids. B. Their cell envelope includes an S-layer. C. They have L-ornithine in their peptidoglycan. D. Their plasma membrane has phosphatidylglycerol phospholipids instead of palmitoleic acids.

Biology & Microbiology

When amino acids are broken down for energy, ammonia is created, which is converted into _____ and excreted in urine.

a. ammonium b. uranium c. urea d. phosphatase

Biology & Microbiology

__________ can be used to estimate the population density for mobile animals. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology