Dissolved oxygen content in stream water is affected by
a. organic matter in the water.
b. overgrowth of algae.
c. water nutrient levels.
d. all of the above.
d
Biology & Microbiology
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Transmembrane movement of a substance against a concentration gradient is called ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The study of how large-scale ecological factors influence local populations and communities is
specifically defined as conservation biology.
Indicate whether the statement is true or false.
Biology & Microbiology
Approximately what percentage of the human genome consists of noncoding DNA?
A) 98% B) 87% C) 77% D) 67%
Biology & Microbiology
Gel electrophoresis separates DNA fragments according to their:
A. percentage of labeled nucleotides B. base sequence C. number of attached primers D. size
Biology & Microbiology