Biology, 13.11.2019 06:31 fantasticratz2
Throughout the night, the human body is exposed to various molds, bacteria, and viruses. yet, in the morning, the human body is left unharmed. what is the human body's first defense against infection from these threats?
a. the skin produces cells that both detect and kill antigens.
b. the skin sheds old skin hourly to ensure newly regenerated skin.
c. the immune system produces t-killer and t- cells at night.
d. the immune system overly produces antibodies as one sleeps.
Answers: 1
Biology, 22.06.2019 04:00
What is the name of the type of cell division that occurs in the prokaryotic cell cycle
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Biology, 22.06.2019 10:00
An animal cell (left) and a plant cell (right) are shown.which organelle, labeled x in the diagram, is found in both plant and animal cells?
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Biology, 22.06.2019 11:00
What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.
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Throughout the night, the human body is exposed to various molds, bacteria, and viruses. yet, in the...
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