Which is used in photosynthesis but not in cellular respiration?
A. NAD+
B. FAD
C. cytochromes
D. NADP+
D. NADP+
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Treehoppers (a type of insect) produce honeydew, which ants use for food. Treehoppers have a major predator, the jumping spider
Researchers hypothesized that the ants would protect the treehoppers from the spiders. In an experiment, researchers followed study plots with ants removed from the system and compared them to a control plot. In the figure above, what can you conclude? A) Ants do somehow protect the treehoppers from spiders. B) Ants eat the honeydew produced by treehoppers C) Ants reduce the numbers of treehoppers. D) No specific conclusions can be drawn from this figure. E) Treehoppers do not produce honeydew in July and are not protected by the ants.
________ inhibitors bind reversibly at the active site of an enzyme.
Fill in the blank(s) with the appropriate word(s).
A particular virus consists of only DNA and proteins. Viruses attach to the surface of a host cell and inject the viral DNA into the host. The host cell then copies the viral DNA and makes new viruses
Eventually, the host cell is killed, and the new viruses are released. These new viruses search for new hosts to continue the cycle. Identify and apply at least three characteristics of life to justify whether a virus is a living thing.
Given the following events involved in the regulation of blood volume, which one of the following answers best represents the order in which these events occurs?
1. sodium reabsorbed from distal tubules and collecting ducts 3. secretion of renin from juxtaglomerular apparatus 2. secretion of aldosterone 4. decrease in blood volume 5. production of angiotensin II A) 4, 2, 5, 3, 1 B) 4, 5, 2, 1, 3 C) 2, 3, 4, 1, 5 D) 4, 2, 5, 1, 3 E) 1, 4, 5, 2, 3