What are male gametes called?:
a. ova
b. sperm
c. testes
d. testosterone
Answer: b. sperm
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Self-propagation and refractory periods (states) are typical of _____
A) action potentials B) graded hyperpolarizations C) excitatory postsynaptic potentials D) threshold potentials E) resting potentials
Based on the function of mitochondria, what substance is able to pass through the outer membrane of the mitochondria easily?
A. Oxygen B. Sugars C. Amino acids D. Potassium ions
If 16% of the nucleotides in one strand of a DNA molecule contain the base G, what percent of the nucleotides on the complementary strand will also contain the base G?
A. 16% B. 8% C. 34% D. 32% E. Impossible to determine from the information given. 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 base pairing in DNA? 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?
The retina contains a type of photoreceptor (non-Rod and non-Cone) that is slowly excited by light signals received through the photopigment (A)______ which is (B)___________.
a. (A) melatonin, (B) G protein coupled receptor b. (A) carotenoid, (B) steroid hormone receptor c. (A) melanopsin, (B) G protein coupled receptor d. (A) carotenoid, (B) small GTPase