Merozoites are a result of
A) meiosis.
B) schizogony.
C) mitosis.
D) crossing over.
E) conjugation.
B
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In the oceans, sulfur exists primarily as ________, and in rocks and sediments sulfur occurs mostly as ________ and ________
A) hydrogen sulfide (H2S) / gypsum (CaSO4) / elemental sulfur (So) B) hydrogen sulfide (H2S) / sulfate (SO42-) / elemental sulfur (So) C) sulfate (SO42-) / gypsum (CaSO4) / pyrite (FeS2) D) sulfate (SO42-) / sulfide (H2S) / elemental sulfur (So)
Imagine that you have been assign the task of describing a new mammalian species. You note that this species has mutated so RBCs no longer go through final stage of maturation. Predict how this might affect the species.
A. Red blood cells could improve their oxygen-carrying function. B. Red blood cells would be better able to fight infection in the body. C. Red blood cells could act as stem cells. D. Red blood cells could replicate outside of bone marrow since they retain their nuclei.
Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell (Zea mays) and a camel cell (Bactrianus ferus). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?
A. The corn cells' have a small vacuole size because it does not need long term water and electrolyte storage. B. The camel cells' have a small vacuole size because it does not need long term water and electrolyte storage. C. The camel cells' have a small vacuole size because it is not in contact with toxins that need to be removed from the cell. D. The corn cells' have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.
How are immune cells able to detect foreign pathogens?
A) They detect foreign, unfamiliar chemical substances released by the invading cells. B) They are able to detect structures on the surfaces of foreign cells that are not found in the host. C) They can compare the DNA sequences from the foreign cells to host DNA.