Which statement best describes the mechanism of neutralization?
A) Antigens clump together and are more susceptible to phagocytosis.
B) Cells are neutralized by toxins injected by natural killer cells.
C) It causes pathogenic cells to lyse.
D) An antibody blocks an antigen's activity by binding to it.
E) Pathogens are bound by antibodies and are more susceptible to phagocytosis.
Answer: D) An antibody blocks an antigen's activity by binding to it.
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Algae have a vascular system very similar to that found in plants
Indicate whether this statement is true or false.
Which of the following is mismatched?
a. cytokinin; inhibits lateral root formation b. auxin; promotes cell elongation c. gibberellin; involved in phototropism and gravitropism d. abscisic acid; promotes stomatal closure e. ethylene; promotes leaf abscission
The most recent evidence clarifying the relationship between modern humans and Neanderthals comes from analysis of
A) skeletal structure. B) the types of tools that were made by Neanderthals. C) Neanderthal artwork and burial rites. D) Neanderthal mitochondrial DNA.
Prophase
What will be an ideal response?