Hydrogen bonds are stronger then covalent bonds
Indicate whether the statement is true or false
FALSE
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Which of the following isnot an additional role for nucleosides and nucleotides?
A. primary energy currency of the cell (ATP) B. electron carrier (NAD+) C. methyl group donor (S-adenosylmethionine) D. regulatory molecule (cAMP) E. catalyst for splicing reactions (dUTP)
The portion of the body fluid contained in cells is
a. interstitial fluid. b. plasma. c. intracellular fluid. d. extracellular fluid.
Which of the following statements best explains why the waters over continental shelves have more nutrients than the open ocean?
A. Sunlight penetration is greater over continental shelves, making it more nutrient rich. B. The waters over continental shelves have more aquatic plants that provide nutrients. C. The open ocean has a greater concentration of consumers that deplete the water of nutrients. D. About 99% of seafood harvested by humans comes from the open ocean, thus depleting it of its nutrients. E. The water over the continental shelves are shallower so the nutrients remain in place.
How many copies of each chromosome will a tetraploid organism have?
a. 1 b. 2 c. 4 d. 8 e. 10