Which statement is NOT true about mutations?
(a) A mutation is a change in the DNA that can generate offspring less fit for survival than their parents.
(b) A mutation can be a result of imperfect DNA duplication.
(c) A mutation is a result of sexual reproduction.
(d) A mutation is a change in the DNA that can generate offspring that are as fit for survival as their parents are.
(c)
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Starch and cellulose can provide animals with energy only if they are first broken down into ________molecules
a. water b. glucose c. sucrose d. carbon dioxide e. amino acids
Which of the following was supported by the terrible accident that happened to Phineas Gage?
A) The cerebrum plays a major role in the sense of balance. B) You cannot live without your hypothalamus. C) The frontal lobes are associated with personality. D) The pons plays a crucial role in hearing.
Which structure does blood pass through immediately before entering the right atrium?
A. atrioventricular valve B. left atrium C. vena cava D. semilunar valve E. aorta
Organisms that can grow with or without oxygen present are
A) obligate aerobes. B) facultative anaerobes. C) aerotolerant anaerobes. D) obligate anaerobes. E) either facultative anaerobes or aerotolerant anaerobes.