Which of the following is released by cells lining blood vessels and causes a decrease in blood
pressure?
a. histamine
b. acetylcholine
c. cyclic AMP
d. nitric oxide
e. prostaglandin
D
You might also like to view...
Which of the following statements is correct?
A. Global warming is the same as global climate change. B. Global climate change includes changes in patterns of rainfall, but not in patterns of temperature. C. Global climate change includes global warming, but also increased fires, changes habitats, and changes patterns of temperature and rainfall. D. Global climate change has no effects of human populations.
In a biology lab exercise, you are asked to examine cells of a growing onion root tip that has been sectioned to show many cells. In most of the cells, you easily see the circular or oval nucleus as a uniformly filled space in a membrane outline. In a small percentage of cells, you see chromosomes as distinct strands just as cell division begins, and as it progresses, because the chromatin
A. becomes less tightly wound, to facilitate cell division.
B. increases in length, as replication adds DNA sections to the original.
C. becomes more tightly folded, increasing their visible length.
D. becomes less tightly folded, increasing their visible length.
E. becomes more tightly wound, to protect DNA, and to more easily manage cell division.
Proteins are polymers constructed from ________ monomers
A) hydrocarbon B) amino acid C) nucleotide D) fatty acid
The presence of the ________ chromosome means that a person will probably appear to be male
Fill in the blank(s) with correct word