Biology, 26.07.2019 09:00 Naysa150724
Two types of transport of molecules across a cell membrane are: transport 1: solute molecules move across the cell membrane along their concentration gradient; requires no energy expenditure. transport 2: solute molecules move across the cell membrane against their concentration gradient; requires expenditure of energy.
Answers: 1
Biology, 22.06.2019 02:00, rhodesnyla01
The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.
Answers: 1
Biology, 22.06.2019 06:20, justinamber89
Cells are adapted to preform specific functions. which of the following terms refers to this capability?
Answers: 2
Biology, 22.06.2019 09:30, ssuereichard
You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.
Answers: 1
Two types of transport of molecules across a cell membrane are: transport 1: solute molecules move...
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