The lipids that form the main structural component of cell membranes are _____.
A. triacylglycerols
B. proteins
C. cholesterol
D. carbohydrates
E. phospholipids
Answer: E. phospholipids
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Which of the following reactions is catalyzed by a ribozyme?
A. Attachment of amino acid to transfer RNA B. Last step in electron transport chain (reduction of O2 to form H2O) C. Peptide bond formation during protein synthesis D. First reaction in glycolysis (phosphorylation of glucose)
A woman with blood type AB and a man with blood type O have three children, one of whom is adopted. The blood types of the children are A, B, and O. What is the blood type of the adopted child?
A) A B) O C) B D) Not enough information is provided to answer this question.
Anthrax is a bacterium that:
A) lies dormant in a spore and is released when exposed to the optimal temperature and moisture. B) is generally not responsive to antibiotic therapy, even if the therapy is begun immediately. C) is highly communicable and would most likely be disseminated by a terrorist via a liquid medium. D) results in death more than 90% of the time, regardless of how the bacterium enters a person's body.
When a noncompetitive inhibitor molecule binds to a(n) (active/allosteric/substrate) site on an enzyme, the shape of the active site changes so that the substrate molecules can no longer bind
What will be an ideal response?