Which structures will make up the thick filaments of a muscle fiber?
a. Sarcomeres
b. None of these choices
c. Myosin
d. Myofibrils
e. Actin
c
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During the light-dependent reactions, due to electron transport, the thylakoid space becomes
A. the site of ATP synthesis. B. the site of NADPH production. C. the site where the Calvin cycle occurs D. more acidic than the stroma. 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 thylakoid membranes and proton gradients? What other information is related to the question? Choose Answer Do you have the information needed to make a determination? 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?
During translation elongation, which event happens last?
A. A tRNA molecule translocates from the A site to the P site. B. A tRNA carrying an amino acid binds to the A site. C. A tRNA molecule translocates from the P site to the E site. D. A peptide bond forms.
Lungs evolved from the __________ of fish
a. gills b. integuments c. circulatory systems d. gut walls e. thoracic walls
An otolith is one of the functional parts of the
a. eye. b. Pacinian corpuscle. c. vestibular apparatus. d. taste bud. e. pits, or heat-sensing devices, of snakes.