The process of RNA editing can alter the base sequence of the mRNA following transcription
Indicate whether the statement is true or false
TRUE
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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.
Which statement about the differentiation of the three primary germ layers is not correct?
A. Ectoderm gives rise to epithelial cells, pigment cells of skin, and nerve cells in the brain. B. Mesoderm gives rise to cells that make up the inner layer of skin, muscle cells, and red blood cells. C. Endoderm gives rise to cells lining the digestive tract and lungs, as well as liver and pancreas. D. Ectoderm gives rise to cells lining the digestive tract and lungs, as well as liver and pancreas. E. Germ layers are sheets of cells that will differentiate into specialized cells.
A scientist is examining motile protist. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?
A) light microscopy B) electron microscopy C) differential interference contrast microscopy D) fluorescence microscopy E) phase-contrast microscopy
How are the four types of nitrogen-containing bases in DNA held together in the double helix of DNA?
What will be an ideal response?