How many bases are in a codon?
A) 20 B) 64 C) 4 D) 3
D
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Which of the following is not true about anoxygenic photosynthesis?
A. Does not produce oxygen and often produces sulfur granules B. Does not produce oxygen C. Water is the usual source of electrons for photosynthesis D. Often produces sulfur granules
Which of the following is not involved in the transmission of salmonellosis?
A. Water B. Canned vegetables C. Eggs D. Poultry
A woman who becomes obese during pregnancy runs the risk of all the following pregnancy complications EXCEPT
A. miscarriage B. stillbirth C. neonatal death D. spina bifida
Southern Copperhead snake venom contains a protein called disintegrin. Disintegrins bind to a class of membrane receptors called integrins. Platelets use integrin receptors to aggregate at a site of tissue damage
Why does the snake venom contain this molecule? A) After the snake bites its prey, the molecule helps in wound healing. B) The molecule helps kill the snake's prey by producing large clots that travel in the body and produce heart attacks and strokes. C) By binding to the platelets, the molecule inhibits the formation of fibrin. D) The molecule interferes with clot formation so that the venom can travel more efficiently from the site of the bite to the rest of the body.