The major macromolecules of the ECM are polysaccharides and
A. lipids.
B. fat.
C. proteins.
D. nucleotides.
E. amino acids.
C. proteins.
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Epinephrine raises blood pressure by ____
a. increasing the strength and rate of the heartbeat b. decreasing the strength and rate of the heartbeat c. stimulating vasodilation d. reducing vasodilation e. decreasing blood flow to the heart, skeletal muscles, and lungs
Cloned B cells which produce antibodies that are specific to a particular antigen are called _______ cells.
Fill in the blank(s) with the appropriate word(s).
Translational controls regulate:a
the activity of a protein end-product that is produced. b. the rate at which an mRNA molecule is translated. c. the rate at which an mRNA molecule is synthesized. d. the uptake of nucleic acids into the cell. e. the attachment of phosphate groups to polypeptides
Addition of salts preserves foods because they
A. lower pH. B. increase osmotic pressure. C. create an isotonic environment. D. lower osmotic pressure.