NADH and FADH2 deliver energy to what stage of cellular respiration?
a) electron transport chain
b) acetyl-CoA formation
c) glycolysis
d) citric acid cycle
Ans: a) electron transport chain
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The ______________ is a digestive cavity in which food enters an opening at one end and passes through the animal in one direction as it is digested.
A. gastrovascular cavity B. stomach C. alimentary canal D. epithelial cavity E. intestine
Which of the following statements about the botulism toxin is NOT true?
a. It is an exotoxin. b. It is produced by the bacterium Clostridium. c. It may be found as a contaminant in poorly prepared food. d. Its brand name is Botox. e. It causes muscles to contract.
Brush border cells have:
a. villi b. acidic secretions c. microvilli d. bile secretions e. smooth muscle
Which genetic diseases involve defects in DNA repair that affect cell division?
a. Gaucher disease and Werner syndrome b. Kearns-Sayre syndrome and progeria c. progeria and Gaucher disease d. Gaucher disease and cystic fibrosis e. progeria and Werner syndrome