Ocean acidification is caused by ____
a. global warming
b. nitrogen fertilizer runoff
c. phosphorous fertilizer runoff
d. transfer of carbon dioxide from the atmosphere to the ocean
e. transfer of carbon dioxide from the ocean to the atmosphere
ANSWER: d
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Digestion of which major nutrient type depends heavily on the process of emulsification?
A. carbohydrates B. lipids C. nucleic acids D. proteins E. bile salts
Multigene families
a. come from a single gene duplication event. b. come from repeated cycles of gene duplication followed by mutation. c. from single point mutations. d. come from exon shuffling. e. come from deletions of genes.
Which is false regarding passive transport?
a. It depends on concentration or electrical gradients. b. It involves weak binding between solute and protein. c. It requires an energy input. d. It depends on protein shape change. e. None of these are false.
Which of the following is transported in greater
quantities in the lymphatic system than in the blood? a. red blood cells b. wastes c. fats d. amino acids e. white blood cells