How many nuclear divisions does meiosis utilize?
What will be an ideal response?
Answer: 2
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What evidence exists that some of the asteroids were geologically active in the distant past?
a. A few of the larger asteroids show similar reflectance spectra (colors) similar to achondrite stony lava-like meteorites. b. A few of the larger asteroids show similar reflectance spectra (colors) similar to carbonaceous chondrite meteorites. c. A few of the larger asteroids show similar reflectance spectra (colors) similar to Jovian planets.
Balanced polymorphism is a type of
a. disruptive selection. b. sexual selection. c. directional selection. d. reproductive isolation. e. stabilizing selection.
Which of the following statements is false?
a. The tissues of arthropods are bathed with hemolymph, which delivers oxygen to their cells. b. In an open circulatory system the heart is still responsible for pumping oxygen-rich fluid. c. Earthworms have a central heart that pumps blood to all their tissues. d. Blood vessels are found in the open circulatory systems common to some invertebrates. e. Hemocyanin is the oxygen transport pigment found in the open circulatory system of invertebrates
Which of the following is not a macromolecule by polymerization?
A) lipids B) proteins C) polysaccharides D) polynucleotides E) DNA