Biology, 23.06.2019 18:30 melaniem50
In carrying out normal activities, cells use oxygen and produce carbon dioxide. the concentration of oxygen is higher in the blood than inside the cell, so oxygen moves into the cell. similarly, carbon dioxide moves out of the cell into the blood because the concentration of carbon dioxide inside the cell is greater than the concentration outside the cell. how do the small molecules of oxygen and carbon dioxide move through the cell membrane? a. active transport by carrier proteins b. active transport by endocytosis c. passive transport by osmosis d. passive transport by diffusion
Answers: 1
Biology, 22.06.2019 10:10
What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b.a light particle
Answers: 2
Biology, 23.06.2019 01:30
Amineral crystallizes from magma deep inside earth. which characteristics can be determined given only the information above. a) luster b) streak c) crystal size d) crystal structure
Answers: 1
Biology, 23.06.2019 06:00
Pls 15 points light ray 1 strikes the smooth surface of a mirror as shown below. which of the following is the reflected ray for ray 1? ray 2 ray 3 ray 4 ray 5
Answers: 2
In carrying out normal activities, cells use oxygen and produce carbon dioxide. the concentration of...
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