Which of the following is not a major function of proteins in the cell membrane?
a. acting as receptors
b. anchoring cells to other structures
c. forming the entire glycocalyx
d. forming channels
Ans: c. forming the entire glycocalyx
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Which of the following are important features of carbon and the diversity of organic molecules?
A. Carbon can form up to 4 covalent bonds with other elements. B. Carbon bonds may occur in multiple different configurations such as linear, ringlike, and highly branched. C. Carbon can form both polar and nonpolar covalent bonds with various elements. D. Carbon bonds are stable at the range of temperatures associated with life. E. All the choices are correct.
The tube coagulase test:
a. detects bound coagulase. b. detects extracellular coagulase. c. is performed on slide coagulase-positive isolates to confirm a positive result. d. requires citrated reagent plasma.
Based on the table above, which cookies were the moistest?
A) Cookies with the most fat B) Cookies with intermediate amount of fat C) Cookies with the least fat D) All cookies had the same moisture
The use of recombinant DNA technology to treat genetic diseases ("gene therapy") has been held back by difficulty
A) delivering cloned genes into target cells and getting the genes to function properly. B) in obtaining the appropriate sequence information from individual people. C) cloning human genes. D) in identifying human genes that cause disease. E) cloning and identifying human genes that cause disease.