Muscles are connected to bones by ________
A) thick filaments
B) ligaments
C) tendons
D) myofibrils
C
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Futuyma and colleagues (1995 ) used the herbivorous leaf beetles of the genus Ophraella to study constraints in genetic diversity
Ophraella beetles feed and lay eggs on only certain members of the sunflower family because the beetles are unable to ________. A) penetrate the epidermal layer to lay eggs on nonhost plants B) detect and detoxify chemical defenses produced by nonhost plants C) digest the leaves of nonhost plants D) break down the chemical defenses produced by nonhost plants in response to predation by the beetles
Centrosome ring-shaped complexes contain ________ and ________
A) ?-tubulin; ?-tubulin B) ?-tubulin; MCAK C) ? -tubulin; MAP2 D) ?-tubulin; GRiPs E) ?-tubulin; crescentin
Which of the following experiments helped B. F. Skinner develop the idea of operant conditioning?
A. Young geese were exposed to Skinner shortly after their birth so they would think he was their mother. B. A dog would salivate when presented with a bowl of food so a bell was rung to build the association between the bell and food. C. A dog was trained to put its paw on a lever in order to receive a pellet of food as a reward. D. A rat was trained to run a maze in a short amount of time in order to receive a reward. E. A rat was trained to pull a lever to receive a reward of a food pellet.
Which type of fat was found to contribute the most relative risk of developing heart disease?
A) saturated fat B) monounsaturated fat C) polyunsaturated fat D) trans fat