If 14C-labeled uracil is added to the growth medium of cells, what macromolecules will be labeled?

A) DNA
B) RNA
C) both DNA and RNA
D) proteins


B

Biology & Microbiology

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What factors determine the tree line in alpine areas? Check all that apply.

A. low temperatures B. high winds C. light availability D. water availability E. pH of soil

Biology & Microbiology

The ________ method provides an estimate of the CFUs (colony-forming units) in a sample.

A. Coulter-counter B. viable plate-count C. streak-plate D. turbidity E. direct microscopic-count

Biology & Microbiology

The study of the immune system is known as:

Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Four of the five answers listed below are molecules that directly participate in muscle contraction within a muscle fiber. Select the exception

a. acetylcholine b. ATP c. calcium d. actin e. myosin

Biology & Microbiology