Once a macrophage engulfs a bacterium, what happens to the foreign cell?
A) It is released into the lymph system for removal from the body.
B) It is released into the digestive tract for removal from the body.
C) The macrophage is attacked by antibodies, killing the cell and bacterium.
D) Antibodies penetrate the macrophage to lyse the bacterial cell.
E) The bacterium is killed by digestive enzymes released from lysosomes.
E
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An organism found in the deep hot biosphere that used hydrogen as an electron donor and sulfate as a terminal electron acceptor would be categorized as which of the following?
A. A sulfate oxidizing photoautotroph B. A sulfate reducing chemoautotroph C. A nitrogen reducing photoautotroph D. A nitrogen reducing chemoautotroph
Which of the following is true of embryo
cloning? a. It occurs all the time in nature. b. It involves the genetic contribution of two parents. c. It produces identical offspring. d. "Artificial twinning" is a laboratory application of the process. e. All of these are true
Most osmophiles are prokaryotes.
A) True B) False
Small, membrane-bound sac that stores substances within a cell.
What will be an ideal response?