Which of the following statements about proteins is FALSE?
A) They are composed of amino acids.
B) They have multiple levels of structural organization.
C) They can be hydrophobic, hydrophilic, or both.
D) Their primary function is energy storage.
E) They are formed by dehydration synthesis reactions.
D
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All cells in our body (e.g., a neuron or muscle cell) possess a type of protein that the immune system uses to identify them as our own cells. This protein is
A. CD4. B. lactoferrin. C. MHC I. D. MHC II. E. antigen.
Each substance contributes to acid rain EXCEPT
a. the ozone. b. waste products from the burning of coal. c. nitrogen fertilizers. d. waste products from the burning of gasoline. e. motor vehicles.
Increasing the stability of a particular mRNA __________ the expression of that gene
a. increases b. does not affect c. eliminates d. decreases e. silencers
Which of the following antimicrobials works by inhibiting protein synthesis?
A) Aminoglycosides, such as gentamicin B) MLSs, such as azithromycin C) Tetracycline D) all of the above