12 Jun If you were a biologist and you were studying organisms
Question
20 If you were a biologist and you were studying organisms which rely on heat produced from within, you would be studying which of the following?
a. Pseudothermsb. Integuthermsc. Adipothermsd. Ectothermse. Endotherms
24. Which of the following is not an effect ethylene has on plants?
a. Suppresses root elongation b. Promotes stem elongation c. Promotes ripening d. Suppresses stem elongation e. Suppresses auxiliary bud development
26.
Which statement about the Neandertals is incorrect? a. Their bones were shorter and thicker than those of modern humans.b. They are ancestral to modern humans.c. They are classified in the same genus as our own species.d. They appear to have been culturally advanced.e. They lived in Europe and Asia during the last Ice Age.
31. Water is transported in vascular plants through which of the following?a. Xylemb. Phloemc. Sieve-tube membersd. Spongy mesophylle. Companion cells
35. A biologist is studying changes in allele frequency of a gene pool due to chance rather than selection by the environment. Based on this information, the biologist would be studying which of the following?
a. Disruptive drift b. Heterozygous drift c. Genetic drift d. Directional drift e. Stabilizing drift
48.A correct description of the movements of actin and myosin fibers is: a. When ADP and P come off myosin, the crossbridges move the actin filaments to shorten the muscle fiber. b. Binding with ATP shortens the muscle fiber; reverse binding elongates the fiber. c. Actin filament heads break down ATP and then attach to a myosin filament to form cross-bridges. d. The energy from breaking down ATP to ADP + P is used to convert actin into myosin. e. The calcium ions are used as energy to split ATP to shorten the fiber.
55. Which of the following is not a correct association?
a. Arteries-lack valves b. Capillaries-oxygen and nutrient exchange c. Veins-high blood pressured. Veins-have valves e. Arteries-high blood pressure
56. Which of the following is not a function of the lymphatic system?
a. Produces and distributes red blood cells b. Produces and distributes lymphocytes c. Absorb excess fluid from tissues d. Help transport fat e. Defend the body against pathogens
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