Biology, 06.09.2020 05:01 skyler1muir
Scientists must use microscopes to study the cells of living things. Explain why microscopes are necessary to study cells. Then, describe some things microscopes have helped scientists discover about cells. (at least 5 sentences)
Answers: 2
Biology, 21.06.2019 21:00
Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria
Answers: 1
Biology, 22.06.2019 05:30
The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
Answers: 3
Scientists must use microscopes to study the cells of living things. Explain why microscopes are nec...
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