Organic molecules have a carbon backbone and _____ such as -OH and -NH2 that affect their chemical properties
A. chemical groups
B. R groups
C. extension groups
D. functional groups
D
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What might be the advantage to a cell if it assimilated a photosynthetic bacterium rather than digesting it?
A) It could now utilize hydrogen sulfide as an energy source. B) It could now use sunlight to make its food. C) It could now live in an oxygen-free environment. D) It could now use glucose as an energy source.
Which marker is highly specific for hairy-cell leukemia?
A. CD19 B. CD20 C. CD25 D. CD 103
Which of the following is not made from long chains of glucose?
A. Glycogen B. Sucrose C. Starch D. Cellulose
A new laboratory assistant was asked to disinfectant the laboratory bench where specimens are received and processed. The laboratory assistant used concentrated bleach to wipe down the la-boratory bench. The discrepancy in this situation is:
a. the laboratory assistant forgot to rinse the laboratory bench after disinfecting it. b. the laboratory assistant failed to wash the laboratory bench with soap prior to ap-plying the bleach. c. the laboratory assistant failed to use di-luted 10% bleach, thinking that concen-trated solution will result in improved disinfection of the bench. d. the laboratory assistant followed proper procedure and there is no discrepancy.