Which structure(s) delivers the blood that contains regulatory hormones to the anterior pituitary gland?
A) secondary capillary plexus
B) inferior hypophyseal artery
C) portal vessels
D) superior hypophyseal artery
E) hypophyseal veins
Answer: C) portal vessels
You might also like to view...
What accounts for the evolutionary success of sponges? a. They feed on a relatively untapped food source
b. Their ability to use flagella to create currents. c. Their ability to use budding for reproduction. d. The hermaphroditic properties of sponges.
Molecules that permeate a plasma membrane by facilitated diffusion
A) do so much more quickly than those crossing by simple diffusion. B) require the aid of transport proteins. C) require energy. D) move from an area of low concentration to an area of high concentration.
For the light-independent reactions to continue, glyceraldehyde-3-phosphate must be converted into
A. ribulose. B. carbon dioxide. C. ATP. D. glucose.
In the "photo" reaction of photosynthesis, where does the energy to build ATP come from, exactly?
a. In the water-splitting photosystem, the electrons donated by water are converted directly into energy. b. In the NADPH-producing photosystem, the electrons from the electron transport chain produce energy upon being transferred. c. In the first electron transport chain, hydrogen ions are pumped into the thylakoid by high-energy electrons; the kinetic energy from the release of these ions builds ATP. d. In the water-splitting photosystem, the electrons release energy upon being transferred to the electron transport chain. e. The energy to build ATP does not come from any one point, exactly.