Unlike most diseases, cancer:
A: is caused by somatic mutations.
B: involves expanding triplet repeats.
C: involves point mutations.
D: is multifactorial.
E: is due to inversions.
Answer: A: is caused by somatic mutations.
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Vacuoles are ________
A) membranous sacs B) manufactured by ribosomes C) composed of microtubules D) found only in plant cells
Which process might be affected by the mutation of a transmembrane protein in the mitochondrial membrane?
A. establishment of hydrogen ion gradient B. reduction of coenzyme NADH C. reduction of coenzyme FADH2 D. glucose transport into the mitochondrion E. transfer of acetyl CoA into the mitochondrion
Which of the following is NOT caused by HSV-1?
A) cold sores B) canker sores C) herpes gladiatorum D) herpes whitlow E) herpes encephalitis
For a chemical reaction to proceed spontaneously _____.
A) it must occur without an input of external energy B) the products must have less energy than the reactants C) it must take place in a very short amount of time D) the entropy must increase