The term that Darwin used to describe the concept that those with superior physical, behavior or other attributes are more likely to survive than those that are not so well endowed, and thus are more likely to pass their traits to the next generation, is called:
A. geometric progression
B. natural selection
C. superior beings
D. survival of modifications
E. biological diversity
B. natural selection
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Four of the five answers listed below are components of roots. Select the exception
a. root hairs b. bulb c. pericycle d. vascular cylinder e. endodermis
Which of the following is NOT true of
polysaccharides? a. composed of many linked monosaccharides b. may be straight and unbranched or highly branched c. most likely made of glucose molecules if they are one of the natural polysaccharides d. may be insoluble because of their large size and structure e. are formed by cleavage reactions
The topical drug ________ inhibits protein synthesis in Gram positive bacteria by preventing loading of isoleucine onto tRNA
A) Amphotericin B B) Bacitracin C) Ciprofloxacin D) Mupirocin E) Tetracycline
An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme extracted from cell culture. Both enzymes were examined and have identical amino acid composition. What is the best explanation for the lack of activity of the synthesized enzyme?
A) The van der Waals radius was altered during laboratory synthesis. B) The synthetic enzyme was not made of amino acids. C) The ATP required for self-assembly was present in the cell extract but not in the laboratory synthesis. D) Denaturation of the synthesized enzyme was not complete. E) The synthesized enzyme was not folded correctly because molecular chaperones were not present.