Water and mineral ions are reabsorbed by the:
A. colon.
B. small intestines.
C. stomach.
D. colon and small intestines.
E. colon, small intestines, and stomach.
A
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What would enhance water uptake by a plant cell?
A) decreasing the ? of the surrounding solution B) increasing the pressure exerted by the cell wall C) the loss of solutes from the cell D) increasing the ? of the cytoplasm E) positive pressure on the surrounding solution
It has been estimated that 70% of human and animal food ________ comes from seed endosperm of grain crops.
A. carbohydrate B. fat C. vitamins D. protein E. minerals
Which does not produce variation?
1.crossing over 2.random alignment of chromosomes during meiosis 3.mitosis 4.genetic recombination of alleles 5.sexual reproduction