Mutagens increase the amount of damage to DNA
A. true
B. false
A
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Which of the following are directly responsible for pumping protons out of the matrix in the mitochondria?
a. cytochrome c, ubiquinone, and protein complex II b. cytochrome c, and protein complexes I and III c. protein complexes I, III, and IV d. ubiquinone, and protein complexes I and IV
Traits controlled by sex-linked recessive genes are expressed more often in males because
A) males always carry two copies of these genes. B) males inherit these genes from their fathers more often than their mothers. C) males get more doses of the recessive gene than do females. D) the male has only one gene for the trait. E) all male offspring of a female carrier get the gene.
A protein folded into an infectious conformation that is the cause of several disorders is called a(n) ____________________
Fill in the blank(s) with correct word
A bryologist (a scientist that studies mosses, and their allies) gives a lecture to your biology class. In her lecture, she makes a reference to fern reproduction. She says, "Fern spores germinate into ____."
A. gametophytes, which are often heart-shaped and have rhizoids that anchor the fern to the substrate B. gametophytes, which are often heart-shaped and have roots that anchor the fern to the substrate C. sporophytes, which are often heart-shaped and have rhizoids that anchor the fern to the substrate D. sporophytes, which are often heart-shaped and have roots that anchor the fern to the substrate