Mature sperm function best
A) at temperatures slightly warmer than body temperature.
B) at temperatures slightly cooler than body temperature.
C) when high concentrations of glucose are available as an energy source.
D) when the pH of semen is below 6.0.
E) when the pH of semen is above 8.2.
B
You might also like to view...
The disinfectant screening method that is known as the ________ test, which is used to measure the potency of a disinfectant.
Fill in the blank(s) with the appropriate word(s).
Mitochondria contain their own DNA and replicate on their own. Why is it that they don't suffer the same consequences as our cells in terms of limited division?
A. Because they have high telomerase activity. B. Shortening of the DNA is only a problem with nuclear DNA; shortening of mitochondrial DNA isn't catastrophic. C. Mitochondrial DNA is circular, so it doesn't shorten when it replicates. D. Since mitochondrial DNA only contains a few genes, it can last a lot longer. E. Because they have high telomerase activity and their DNA is circular and so doesn't shorten in replication.
The process by which Darwin came to the idea of evolution by natural selection was quick and based
on little evidence.
Indicate whether the statement is true or false.Four of the five choices below are
characteristics of adaptive immunity. Select the EXCEPTION.
a. self/non-self recognition b. specificity c. diversity d. fever e. memory