Elements that are required in relatively large amounts by microorganisms are called ________.

A. meganutrients
B. macromolecules
C. multivitamins
D. macronutrients


Answer: D

Biology & Microbiology

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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.

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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.

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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%

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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

Biology & Microbiology