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Which of these puts the steps of the sliding filament model of muscle contraction in the correct order?


A) ATP is hydrolyzed as myosin heads bind the actin filament→myosin heads bind ATP→ADP + P are released and the myosin heads pull the actin filament
B) Myosin heads bind ATP→ATP is hydrolyzed as myosin heads bind the actin filament→ADP + P are released and the myosin heads pull the actin filament
C) ADP + P are released and the myosin heads pull the actin filament→ATP is hydrolyzed as myosin heads bind the actin filament→myosin heads bind ATP
D) Myosin heads bind ATP→ ADP + P are released and the myosin heads pull the actin filament→ATP is hydrolyzed as myosin heads bind the actin filament
E) ATP is hydrolyzed as myosin heads bind the actin filament→ADP + P are released and the myosin heads pull the actin filament→myosin heads bind ATP

F) A) and B)
G) None of the above

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What is the correct sequence of events required for fish to detect the physical presence of other fish within the school?


A) Water currents cause the cilia within the gelatinous membrane to bend, which causes a nerve impulse to go to the brain.
B) Sound waves cause the cilia within the gelatinous membrane to bend, which causes a nerve impulse to go to the brain.
C) A chemical signal will cause the cilia within the gelatinous membrane to bend, which causes a nerve impulse to go to the brain.
D) Water currents cause a nerve impulse to go directly to the brain.
E) A chemical signal will cause a nerve impulse to go directly to the brain.

F) B) and E)
G) C) and D)

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The structural unit of compact bone is the


A) osteoclast.
B) osteocyte.
C) osteon.
D) osteoblast.
E) sarcomere.

F) B) and C)
G) B) and E)

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Which sense is found in all animals, and is thought to be the most primitive sense?


A) photoreception
B) mechanoreception
C) chemoreception
D) hearing
E) proprioception

F) A) and D)
G) A) and C)

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An) _____ eye has a single lens.


A) confocal
B) compound
C) static
D) camera-type
E) eyespot

F) All of the above
G) A) and B)

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In the figure shown here, which of the following is the retina? In the figure shown here, which of the following is the retina?   A)  A B)  B C)  C D)  D E)  E


A) A
B) B
C) C
D) D
E) E

F) B) and C)
G) All of the above

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According to the sliding filament model, when muscle tissue contracts,


A) the Z lines slide away from one another.
B) the myosin filaments shorten, while the actin filaments remain the same length.
C) the sarcomeres shorten.
D) the actin and myosin filaments shorten.
E) the T tubules shorten.

F) A) and C)
G) A) and E)

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Which of these lists the structures in the correct sequence that light must pass through in order to reach the photoreceptors of the human eye?


A) retina→lens→pupil→cornea
B) lens→cornea→pupil→retina
C) lens→pupil→cornea→retina
D) cornea→lens→pupil→retina
E) cornea→pupil→lens→retina

F) All of the above
G) B) and E)

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Rhodopsin is found in


A) rod photoreceptors.
B) hair cells.
C) olfactory cells.
D) taste buds.
E) cone photoreceptors.

F) A) and B)
G) A) and C)

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The hip and shoulder joints are not _____ joints.


A) freely movable
B) ball-and-socket
C) hinge
D) synovial
E) fluid-filled

F) D) and E)
G) None of the above

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Which of these is mismatched?


A) cutaneous receptors - skin
B) rods and cones - eye
C) taste buds - tongue
D) ganglion cells and intermediate cells - ear
E) hair cells - lateral line

F) C) and D)
G) B) and E)

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The colored part of the eye is the


A) pupil.
B) cornea.
C) iris.
D) retina.
E) sclera.

F) B) and E)
G) D) and E)

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Which of these is mismatched?


A) utricle - ear
B) taste bud - tongue
C) tympanic membrane - ear
D) fovea - eye
E) ossicles - joints

F) B) and E)
G) C) and D)

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The greater the amplitude of sound waves, the greater the


A) pitch.
B) volume.
C) brightness.
D) tone.
E) equilibrium.

F) B) and D)
G) B) and C)

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