The constant state of contraction in a resting muscle is known as muscle ____________________. Fill in the blank(s) with the appropriate word(s)
ANSWER: tone
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Northern elephant seals (Mirounga angustirostris) come up on a beach during breeding season. Males arrive first and establish a territory by posturing and fighting with other males. The posturing and fighting behaviors are probably the result of _________
A. intrasexual selection B. intersexual selection C. competition D. kin selection E. group selection
Hormone receptors are comprised of two domains, the hormone binding domain and the ____, which triggers the
cellular response.
a. gene activation domain b. DNA-binding domain c. phosphorylation domain d. kinase domain e. phosphatase domain
Evolution of embryonic pathways probably occurs most commonly though ____
a. macroevolutionary mechanisms b. microevolutionary mechanisms c. protein recruitment d. extinction e. mutations during embryonic development
What happens to the enzyme and the substrate during a chemical reaction?
What will be an ideal response?