How many NADH molecules are created during one turn of the Krebs cycle? (Assume the Krebs cycle begins with one acetyl CoA molecule.)
A) six B) four C) eight D) one E) three
Answer: E
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Hybridization between different species is rare because it ____
a. requires the breakdown of a barrier preventing interbreeding b. causes lethal mutations in hybrid offspring c. leads to the exchange of genes between closely related species
d. leads to gene flow between species e. contradicts the species concept
What will occur when the translation machinery encounters a nonsense codon during protein synthesis?
a. A mutated protein will be produced. b. The nonsense codon is ignored. c. Protein synthesis will terminate. d. The cell will begin apoptosis.
The anterior pituitary hormone that promotes milk production is called __________
Fill in the blank(s) with the appropriate word(s)
All mammals have hair, mammary glands, and a placenta.
Answer the following statement true (T) or false (F)