Discuss 5 factors that have influenced the increasing development of resistant microbial strains.
What will be an ideal response?
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It takes very few molecules of a hormone to cause changes in a target cell. This may be explained by the fact that: (Select all correct answer options.)
A. transcriptional activation produces many copies of mRNA, each of which is translated many times. B. the mechanism of hormonal action involves the replication of the hormone within the target cell to quickly magnify the hormone's effect. C. hormones are large molecules that persist for years and can repeatedly stimulate the same cell. D. the mechanism of hormonal action may involve an enzyme cascade that amplifies the response to a hormone. E. the mechanism of hormonal action involves memory cells that have had prior contact with the hormone and immediately respond to its presence.
The yellow-bellied glider is a mammal whose continued survival depends on undisturbed eucalyptus
forests.
Indicate whether the statement is true or false.Which class of nutrients provides certain "essential" organic components required in the diet because they cannot be manufactured by the body?
A. carbohydrates B. proteins C. nucleic acids D. water a. true b. false
From a sociobiological perspective, altruism is a behavior that
A) does not have a genetic basis. B) can potentially enhance the altruist's fitness. C) will always be selected against. D) occurs only in the social insects.