The vast majority of microorganisms found in soils have been successfully cultured in the laboratory.
Answer the following statement true (T) or false (F)
False
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Which process results in a zygote?
(a) meiosis. (b) mitosis. (c) fertilization. (d) none of the above.
A cell infected by viruses may die due to the actions of interferons. The same result would occur WITHOUT interferon-any cell infected by a virus would die directly from the virus
Is there any apparent benefit to the host organism from the interferon action? A. No-interferon is just an evolutionary leftover from a much earlier form of antiviral activity. It has no function now. B. Yes-when the interferon acts on a virally infected cell, it shuts down protein production (which shuts down virus replication). Without interferon, virus will kill the cell eventually, but only after it has replicated many times over. Interferons may kill the host cell, but they will also prevent it from being used to replicate virus. C. Yes-by killing host cells, you limit the number of cells that are available targets for viral infection. This is a good way of preventing viral infection. D. No-viruses will replicate in cells regardless of the effects of interferons, so their action of killing the cell has no benefit to the host organism during the infection process.
What are the advantages of C4 and CAM
photosynthesis compared to C3 photosynthesis?
a. high sugar production can be maintained on hot, dry days b. water is not necessary for the lightdependent reactions c. carbon dioxide is not needed for the lightindependent reactions d. less sugar is necessary for metabolic activities e. more than one of these is an advantage of C4 and CAM photosynthesis
Imagine you were driving westward on a road in a wooded area. If ferns were growing in the area, which side of the road would they most likely be growing, and why wouldn't they be growing as well on the other side?
What will be an ideal response?