Elements that are required in relatively large amounts by microorganisms are called ________.
A. meganutrients
B. macromolecules
C. multivitamins
D. macronutrients
Answer: D
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The septum in a fungus is
A. the seventh cellular division. B. the seventh nucleus in a dikaryote cell. C. the seventh cell from the tip of the hypha. D. the demarcation between the mycelium and the fruiting body. E. a cross wall that separates hyphae into cells.
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.
If both parents are "carriers" due to the presence of one copy of the cystic fibrosis allele, what are the odds that they would have a normal child?
a. 0 b. 25% c. 50% d. 75% e. 100%
Which of these is NOT one of the characteristics of a vertebrate?
A. closed circulation B. segmentation C. extreme cephalization D. radial symmetry E. coelom