A large molecule whose subunits consist of a sugar, a phosphate group, and a nitrogen-containing base
is a
a. nucleic acid.
b. amino acid polymer.
c. storage carbohydrate.
d. phospholipid.
e. high-density lipoprotein.
A
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In humans, the volume of an egg is 100 times the volume of a sperm. Compared to the amount of chromosomal DNA in an egg, the amount of chromosomal DNA in a sperm is
A) variable but usually less than one-hundredth that of the egg. B) exactly one-hundredth that of the egg. C) one-fourth that of the egg. D) one-half that of the egg. E) equal to that of the egg.
Which of the following uses cattle as an intermediate host?
A. Tapeworm B. Ringworm C. Blood fluke D. Planaria E. Bipalium
Place each of the following terms with the correct statement.coevolutiondefensive colorationcamouflagesecondary chemical compoundsBatesian mimicryIt is a situation in which a palatable organism resembles another kind of organism that is distasteful or toxic.
Fill in the blank(s) with the appropriate word(s).
The phase called ________ is an interval between cell division and DNA replication. During this time, a cell synthesizes proteins, grows, and accumulates the materials needed to replicate its DNA in the next phase.
Fill in the blank(s) with the appropriate word(s).