The single tendon of the biceps attaches to ___
a. the clavicle
b. the scapula
c. the ulna
d. the radius
e. more than one of these bones
D
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Saturated fats have long, straight tails of fatty acids and can clump tightly together in cells and animal bodies. Unsaturated fats have kinks in their tails due to double bonds, which prevent them from packing together as tightly. Animals that are ectotherms (their body temperature fluctuates with the environment) need to keep their membranes fluid at cooler temperature and thus use in their membranes.
A. mostly unsaturated fats B. mostly saturated fats C. equal amounts of saturated and unsaturated fats D. carbohydrates E. proteins
Angiosperms use which temporary reproductive structures that are not present in any other group of plants?
A. flowers B. seeds C. receptacles D. carpels E. cones
Which of the following statements about algae is FALSE?
A) The group includes seaweeds and kelps. B) They are photosynthetic organisms. C) They provide most of the oxygen on Earth. D) They are important in the degradation of dead plants and animals. E) They are a source of food for aquatic and marine animals.
The purpose of a booster shot is to
a. elicit a primary response to an antigen. b. elicit a secondary response to an antigen. c. re-establish the formation of antibodies. d. counteract specific antigens in the system. e. seek out invaders.