How does a sarcomere shorten using the sliding filament mechanism of muscle contraction?
A) Actin and myosin filaments shorten and slide past each other.
B) As they slide past each other, actin filaments shorten, while myosin filaments do not shorten.
C) Actin and myosin filaments do not shorten, but they do slide past each other.
D) As they slide past each other, myosin filaments shorten, while actin filaments do not shorten.
C
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An individual who is experiencing a prolonged period of stress would likely have ______ levels of circulating _______ than an individual who was not experiencing stress
A. higher; cortisol B. lower; cortisol C. higher; ADH D. lower; ADH E. lower; ACTH
The distribution of cytoplasm to daughter cells
is accomplished during a. prokaryotic fission. b. mitosis. c. meiosis. d. cytokinesis. e. karyokinesis
A codon calls for the placement of an individual
A. protein. B. rRNA. C. amino acid. D. mRNA.
Two important features that distinguish mammals from any other type of animal are:
a. four legs and hair. b. placentas and hair. c. hair and mammary glands. d. scales and mammary glands. e. placentas and mammary glands.