RNA polymerase binds to the ____ of a gene
Fill in the blank(s) with the appropriate word(s).
Answer: promoter
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Enzymes that readily break starch apart cannot hydrolyze the glycosidic linkages found in cellulose. Why is this logical?
A) The geometry of the bonds is different, and the shapes of enzyme active sites are highly specific. B) Starch is held together by hydrogen bonding, not covalent bonding. C) Cellulose molecules are highly branched, and enzymes are too bulky to fit. D) Starch is held together by peptide bonds, not glycosidic linkages.
A fruit that develops from several ovaries in a single flower, such as a raspberry, is called a(n) ____
a. aggregate fruit b. accessory fruit c. multiple fruit d. simple fruit e. compound fruit
Prenatal diagnosis techniques such as amniocentesis and chorionic villus sampling remove cells that
were produced by an embryo. These cells are then used
a. to treat diseases. b. for implantation to produce pregnancy. c. to develop embryonic stem cells. d. to test for the presence of mutant alleles or chromosomal alterations. e. for cloning.
Trees often produce secondary chemicals to deter herbivores from feeding on their leaves; in turn, many herbivores have developed ways of avoiding or detoxifying these chemicals. This is an example of
A) competitive exclusion. B) coevolution. C) parasitic evolution. D) parasite predation. E) predatory avoidance.