Cyclic 2,3-diphosphoglycerate (cDPG) is present in molar quantities in the cytoplasm of many hyperthermophilic methanogens. The function of this compound is to
A) prevent rRNA misfolding.
B) prevent chemical damage to DNA at high temperatures.
C) counteract the effects of high osmotic environments.
D) activate hydrogen gas.
Answer: C
You might also like to view...
Which action causes the release of neurotransmitter molecules?
A) the reception of a signal from the postsynaptic neuron B) an electrical signal reaching the end of the cell body C) an electrical signal reaching the terminal bouton D) an electrical signal reaching the beginning of the dendrite
In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the phenotypic ratio in the F2 generation should be closest to
A. 1 brown eye: 1 red eye: 1 heavy wing veins: 1 thin wing veins B. 1 brown eye, thin wing veins: 2 red eye, thin wing veins: 1 red eye, heavy wing veins C. 3 red eye, thin wing veins: 1 brown eye, heavy wing veins D. 1 brown eye, heavy wing veins: 2 red eye, thin wing veins: 1 brown eye, thin wing veins
Which of the following structures do not help the bacteria adhere to surfaces?
A) capsule B) pili C) fimbriae D) flagella E) slime layer
Assimilation of organic phosphates from the surroundings uses enzymes known as ________.
A. phosphorylases B. phosphosynthetases C. phosphatases D. phosphoisomerases