If all of the lysosomes within a cell suddenly ruptured and released their contents, what could occur?
A) The mitochondria and chloroplasts would begin to divide.
B) There would be no change in the normal function of the cell.
C) The biological molecules in the cell would begin to degrade.
D) The DNA within the mitochondria would begin to degrade.
E) The number of proteins in the cell would begin to increase.
C
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How many teeth does the average adult human
have?
a. 24 b. 32 c. 38 d. 42 e. 20
If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, then the concentration of H+ ions _____
A) is 10 times higher in the cytoplasm than in the mitochondrial matrix B) is 10 times higher in the mitochondrial matrix than in the cytoplasm C) in the cytoplasm is 7/8 the concentration in the mitochondrial matrix D) in the cytoplasm is 8/7 the concentration in the mitochondrial matrix
Almost all the covalent bonds in lipids are nonpolar, causing their solubility in water to be extremely low. Lipids are hydrophobic substances.
a. true b. false
Hormones differ from other chemical messengers such as neurotransmitters in that hormones:
A) travel through the bloodstream. B) are all in the lipid chemical family. C) always suppress rather than stimulate a response. D) are released through ducts. E) cross a synapse.