What could decrease the passage of oxygen into the blood vessels?
Answer: if theres a thicker membrane, there will be less surface area
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Enzyme specificity refers to the
a. specific name of each kind of enzyme. b. fact that enzymes catalyze one particular substrate or a small number of structurally similar substrates. c. effect of temperature on enzyme activity. d. effect of pH on enzyme activity.
What purpose do restriction enzymes play in bacterial cells?
a. Restriction enzymes prevent the overproduction of mRNA in the bacterial cell. b. Restriction enzymes attack bacteriophage DNA when it enters the cell. c. Restriction enzymes promote bonding of the RNA polymerase to the promoter. d. Restriction enzymes limit the rate of bacterial replication. e. Restriction enzymes connect Okazaki fragments.
When blood leaves the heart, it first enters
A) capillaries. B) arterioles. C) venules. D) veins. E) arteries.
Cloning mammals has proven to be:
a. impossible. b. easy and straightforward. c. not technically feasible at the present time. d. a technique that produces many similar-looking, deformed progeny. e. a process with a low success rate and a high incidence of genetic defects.