Which of the following is not a function of the eukaryote glycocalyx?
A. Protection
B. Adherence
C. Movement
D. Reception of chemical signals
E. All of the choices are functions
Ans: C. Movement
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One reason angiosperms are more successful
than gymnosperms is because gymnosperms lack ___.
a. seeds b. megaspores c. fruits d. true leaves e. wood
Four of the following statements are true of predator-prey coevolution. Which one is FALSE?
a. Each species exerts selection pressure on the other. b. Predators are selective agents that favor improved prey defenses. c. Prey with better defenses are selective agents that favor better predator hunting skills. d. Coevolution only occurs in animals and is usually seen after one reproductive generation. e. Camouflage, warning coloration, and mimicry are all examples of coevolution tactics.
A patient with which blood type can donate blood to anyone?
A) type A B) type B C) type AB D) type O
In agriculture, male animals are often castrated to modify their behavior and to produce desirable qualities in the meat. What would you predict about hormone levels in castrated male animals?
A. Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low. B. Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low. C. Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high. D. Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high.