Segments of DNA that increase the rate of transcription of certain genes are known as ________
A) introns B) short tandem repeats
C) polymerases D) enhancers
Answer: D
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When methanogens convert carbon dioxide to methane, it is a(n) ________ reaction.
A. aerobic B. oxidation C. ammonification D. reduction
In your Drosophila laboratory, you find a larva that is missing segments Lb, T1, T2, and T3. This larva probably has a mutation in a ___________ gene.
A. pair-rule B. gap C. maternal effect D. segment-polarity E. gap or segment-polarity
Water has unique properties which include its strength as a solvent; its three environmental stages of solid, liquid, and gas; and its temperature regulation. These properties are due to polar covalent bonds between oxygen and hydrogen. The polar covalent bonds are a result of
A. there being a greater number of electrons in oxygen outermost shell than in hydrogen. B. oxygen being more electronegative and therefore attracting more electrons than hydrogen. C. hydrogen being an electron donor and oxygen being an electron acceptor. D. hydrogen and oxygen having equal electronegative strength and therefore have equal sharing of electrons. E. hydrogen being more electronegative and therefore attracting more electrons than oxygen.
Which of the following is an increase in blood flow?
a. Ischemia b. Hyperemia c. Septicemia d. Leukocytosis