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