The letter “C” from above represents which of the
following?
a. the excretory pore
b. loops where blood vessels take up solutes from
the blood
c. sexual reproductive organ of the planarian
d. cilia which flick to draw fluid into the planarian
e. none of these
Answer: b
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Which pair represents the correct complementary bonding of nitrogen containing bases in a DNA molecule?
a. adenine and cytosine b. adenine and guanine c. cytosine and thymine d. guanine and cytosine e. guanine and thymine
Excessive amounts of blood lipids increases the risk of ____
a. arteriosclerosis b. atherosclerosis c. hypertension d. a heart attack e. angioplasty
What does phototaxis allow the cell to do?
a. stay in the optimum light environment b. stay in the optimum magnetic environment c. stay in the optimum chemical environment d. stay in the optimum climate environment
Which of the following statements is NOT true about the germinated pollen grain?
A. Fertilization occurs when the pollen grain germinates. B. The generative cell produces two sperm. C. There are two sperm nuclei that move down the pollen tube to the micropyle. D. The pollen tube forms in the style. E. The tube cell produces the pollen tube.