The difference between deoxyribose and ribose is that ribose
a. is a six-carbon sugar and deoxyribose has only five carbons.
b. bonds only to thymine, not uracil.
c. has one more oxygen atom than deoxyribose has.
d. is all of the above.
d
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The main solutes in the filtrate as it enters the distal convoluted tubule are (select all correct choices):
A. urea. B. electrolytes. C. other wastes. D. amino acids. E. nucleotides.
Which structure will form the outer layer of a bone? a. Yellow marrow b. Compact bone c. None of these choices
d. Spongy bone e. Red marrow
Human saliva contains which of the following enzymes?
a. aminopeptidase b. amylase c. chymotrypsin d. pepsin e. trypsin
When a diploid plant produces diploid gametes due to nondisjunction during meiosis, what occurs?
A. An increase in the number of chromosomes above the parent species occurs. B. Autoploidy is occurring. C. A triploid or tetraploid plant may occur. D. All of the answer choices are true.