With which of the following substrates can Streptococcus mutans make a capsule?
A) Xylitol
B) Glucose
C) Mannitol
D) Sucrose
E) All of the above
Ans: D) Sucrose
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Which of the following will NOT result in a proto-oncogene's conversion into an oncogene?
a. A mutation in the proto-oncogene's promoter that increases transcription of the gene. b. A mutation in the coding sequence of a protein that renders a protein abnormally active. c. An alteration to the p53 coding sequence rendering the p53 protein inactive. d. An introduction of new DNA sequences to a chromosome that alters the regulation of the cell cycle. e. The translocation of a proto-oncogene to a location in the cell and under the control of a more active promoter than present in the original location.
Environmental conditions often vary spatially but do not tend to change over time in a given place
Indicate whether the statement is true or false
What is the common influence of ultraviolet light on DNA?
What will be an ideal response?
Which of the following events is not a characteristic of successful seed germination?
A. The seedling orients itself relative to gravity. B. The embryo becomes desiccated. C. New growth occurs at the meristems. D. The radicle breaks through the seed coat. E. The shoot becomes photosynthetic.