A mutation causes a gene to become overactive, contributing to uncontrolled cell growth. Which term best describes this gene?
A. tumor-suppressor gene
B. oncogene
C. spliced gene
D. alternatively spliced gene
E. malignant gene
B. oncogene
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Retroviruses have a +ssRNA as their genome. In order to complete an infection, they must first make a ________ molecule, which they use to direct the synthesis of mRNA.
A. -ssRNA B. dsDNA C. dsRNA D. DNA:RNA hybrid
Retroviruses are unique because they are a combination of RNA and DNA.
Answer the following statement true (T) or false (F)
The major carbon reservoir in marine ecosystems is ____
a. cell respiration b. in marine sediments c. volcanic eruptions d. photosynthesis e. ocean runoff
Desulfovibrio bacteria can perform the following reaction: S6- S2-. These bacteria are
a. Synthesizing sulfur. b. Reducing sulfur. c. Hydrolyzing sulfur. d. Oxidizing sulfur.