What is an oocyte?
A. Haploid animal egg
B. Immature sperm
C. Polar body arising from mitosis of the egg
D. Immature, diploid animal egg
E. Haploid germ cell
Answer: D
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In the Calvin cycle, the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is
A) phosphoglycerokinase. B) ribulose bisphosphate carboxylase/oxygenase (rubisco). C) triose phosphate isomerase. D) phosphoribulokinase. E) glyceraldehyde-3-phosphate dehydrogenase.
Sexual reproduction occurs when _______.
a. an unfertilized egg develops normally b. two female gametes fuse and develop c. a sperm from a male fuses with an egg from a female d. two male gametes fuse and develop
Select the pair in which the nitrogenous waste is INCORRECTLY matched with the benefit of its excretion.
A. urea: very insoluble in water B. urea: low toxicity relative to ammonia C. uric acid: minimal loss of water when excreted D. ammonia: very soluble in water E. uric acid: can be stored and excreted as a precipitate
What is the maximum length of a polypeptide encoded by an mRNA that is 45 nucleotides long?
What will be an ideal response?