A) tibia is to the femur.
B) fibula is to the ulna.
C) fibula is to the tibia.
D) humerus is to the femur.
F) All of the above
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A) The exoskeleton protects insects against predators and drying out.
B) The insect exoskeleton is jointed and movable.
C) The insect exoskeleton grows with the organism.
D) The insect exoskeleton is made of a complex form of carbohydrate called chitin.
E) The insect exoskeleton has muscles attached to it from the inside of the body.
G) A) and C)
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A) The human muscular system contains three kinds of muscle tissue.
B) Muscles work in antagonistic pairs across a joint.
C) Muscles are attached to bones by tendons.
D) Muscles can move a bone by pushing or pulling it as they contract.
E) Tetanus and tone are features of normal muscle tissue.
G) None of the above
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A) when high levels of oxygen and sugar are released by the sarcolemma.
B) when a surplus of ATP is released by a nerve motor unit.
C) by release of a neurotransmitter at a synapse that directly causes actin and myosin to slide.
D) by the nerve releasing a neurotransmitter, which triggers a flow of calcium that attaches to actin filaments and exposes the myosin binding sites.
E) by the nerve releasing a neurotransmitter, which triggers a flow of calcium that releases ATP and begins the actin filaments sliding across the myosin binding sites.
G) B) and D)
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A) Walking on their toes.
B) Elongated hindlimbs that propel them forward.
C) Bipedal locomotion on the soles of the feet.
D) Long legs and running on the tips of elongated phalanges.
E) All of these are advantages for land based predators.
G) A) and D)
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A) osteoblasts - cells that build bone tissue
B) osteoclasts - cells that break down bone tissue
C) osteons - tubular units of compact bone
D) red bone marrow - fat-storage tissue
E) lacunae - tiny chambers in concentric circles around a central canal
G) A) and E)
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1. Support of the body
2. Prot...View Answer
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2. Prot...
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A) sarcolemma.
B) neuromuscular junction.
C) tropomyosin.
D) axon bulb.
E) T tubule.
G) B) and C)
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A) Twenty-six vertebrae make up the vertebral column.
B) The vertebrae form a dorsal backbone.
C) The vertebrae help form 4 curvatures of the spine.
D) The vertebrae are separated by intervertebral disks.
E) The vertebrae protect the spinal cord.
G) A) and C)
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A) planaria, hydras and earthworms
B) planaria, hyrdas, crayfish
C) earthworms, crayfish and sea stars
D) butterflies, cats and clams
E) bluegill, lobster and planaria
G) A) and B)
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A) immovable
B) fibrous
C) cartilaginous
D) synovial
E) ball-and-socket
G) A) and C)
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