Which of the following types of microbes is most likely to be found in the sediment of Lake Michigan?
A. Mesophiles; temperatures in the hypolimnion support growth in the 4-9°C range
B. Anaerobes; oxygen is least abundant in the sediment layer
C. Cyanobacteria; seasonal upwelling of nutrients can cause dramatic increases in their numbers
D. Autotrophs; their carbon source is dissolved carbon dioxide
Answer: B
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The resumption of plant growth and development after a period of seed dormancy is
A. fertilization. B. transpiration. C. pollination. D. stagnation. E. germination.
Why are skin grafts between identical twins more successful than grafts between more unrelated individuals?
a. Identical twins share the same uterine environment. b. Identical twins are exactly matched in age. c. Identical twins have identical HLA alleles. d. Identical twins are always the same sex. e. Identical twins have the same blood type.
How does gibberellin actually work?
A. In the presence of blue light, it triggers additional photosynthesis and growth. B. In the presence of light, it increases the turgor pressure of the cell and accelerates growth. C. In the presence of unidirectional light, it moves to the shady side and activates an ATP-driven proton pump that results in weakened cell walls and eventual elongation. D. In the presence of light, it increases the formation of additional DNA that codes for additional plant structures. E. It attaches to a plasma membrane receptor and results in gene activation to produce the enzyme amylase that releases sugars for additional cell growth, division, and elongation.
_________ is based on the premise that all biological functions in the body are governed by the flow of Qi and Blood traveling in the meridians and vessels of the body.
Fill in the blank(s) with correct word