During translation, one mRNA molecule is usually "read" by more than one ribosome at a time so that several proteins can be synthesized at one time.
a. true
b. false
a. true
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Which of the following statements about the breakdown of carbohydrates is false?
A. Aerobic respiration is very efficient and captures the majority of the energy available in each glucose molecule in a usable form (ATP). B. During glycolysis, starches are broken down into two molecules of pyruvate. C. Glycolysis does not require oxygen. D. ATP is produced during both glycolysis and oxidative phosphorylation. E. Glycolysis occurs in the cytosol, whereas the citric acid cycle occurs in the mitochondria.
An RNA processing event that frequently leads to different protein products encoded by a single gene is:
A. transcription. B. alternative splicing. C. nucleolytic proofreading. D. phosphorolysis.
Integral proteins with carbohydrates (sugars) attached that stick out on the exterior surface of cello membranes help recognize "self" and are called ______________.
a) amino acids b) lipoproteins c) glycoproteins d) monosccharides
If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development?
A) a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract B) a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose C) a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods D) a compound that inhibits enzymes by significantly changing the pH throughout the body