What is the final result of mitosis in a human?
A) genetically identical 2n somatic cells
B) genetically different 2n somatic cells
C) genetically identical 1n somatic cells
D) genetically identical 2n gamete cells
A
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Capillary action is one of the forces that aids water's upward movement in plants. The narrower the diameter of the tube, the farther the water column will rise. Capillary action is a result of water molecules:
A. producing sufficient surface tension to overcome the pull of gravity. B. having a strong cohesive force and attaching to the surrounding vessel walls. C. storing heat and thus moving faster because of heat of vaporization. D. having an adhesive force, which allows them to attach to the vessel walls. E. being associated with hydrophobic molecules, which can result in upward movement.
Tetherin is a protein encoded in the human genome. Based on what you know about the interaction between Vpu and tetherin, what do you predict the broad cellular function of tetherin is?
A. To keep HIV particles in place until they are ready to bud B. To stop the spread of HIV in the body by inhibiting HIV release C. To help in HIV assembly D. To help with the maturation of HIV particles
The largest biome on Earth is the
A. desert. B. tundra. C. temperate deciduous forest. D. taiga. E. ocean (marine aquatic).
Although the reactions of the Calvin cycle do not depend directly on light, they do not usually occur at night. Why?
A) It is usually too cold at night for these reactions to take place. B) Carbon dioxide concentrations decrease at night. C) The Calvin cycle depends on products of the light reactions that cannot occur at night. D) Plants must open their stomata to restore their water balance each night. E) At night, plants have a negative water balance with the soil, due to reduced evaporation