Viruses that alter host genetic material may cause oncogenic effects.
a. true
b. false
Ans: a. true
You might also like to view...
One of the more formidable obstacles to mammalian gene cloning is the presence of
A) introns. B) exons. C) repressors. D) integrators.
According to the biological species concept, two groups of organisms that are unable to form fertile, viable hybrids are considered to be different
A. races. B. species. C. kingdoms. D. hybrids. E. cohabitants.
In an experiment, a scientist isolates mitochondria from living cells and suspends them in two different buffered solutions. One solution is maintained at ph 4, while the other solution is maintained at ph 9. the scientist finds that mitochondria in the solution at ph 4 continue to produce atp but those in the ph 9 solution do not. The results of the experiment can be used as evidence in support of which of the following scientific claims about mitochondrial activity
A. mitochondria in a cell-free environment are unable to convert thermal energy into atp, B. the electron transport chain pumps electrons from the cytosol to the mitochondrial matrix C. atp production in mitochondria requires a hydrogen ion gradient that favors movement of protons into the mitochondrial matrix D. atp synthase molecules change their orientation in relation to the proton gradient across the mitochondrial membrane
Rosy periwinkle, the nine-banded armadillo, and some species of fungus and bacteria have ________ value to man.
A. medicinal B. agricultural C. no D. indirect E. consumptive use