The two tenets of natural selection are (select all that apply):

A. sexual reproduction in a population.
B. variation in a population.
C. competition in a population.
D. increasing number of members in a population.


B, C

Biology & Microbiology

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In Griffith's experiment involving the transformation of Streptococcus pneumoniae,

A) the R strain was virulent. B) the S strain was virulent. C) both the R and S strains were virulent. D) the R strain had a protein capsule. E) the S strain had a protein capsule.

Biology & Microbiology

Which of the following nucleotide sequences represents the complement to the DNA strand

5? ? AGATCCG- 3?? a. 5? ? AGATCCG- 3? b. 3? ? AGATCCG- 5? c. 5? ? CTCGAAT- 3? d. 3? ? CTCGAAT- 5? e. 3? ? TCTAGGC- 5?

Biology & Microbiology

Proteins differ from one another because

A) the peptide bonds linking amino acids differ from protein to protein. B) the sequence of amino acids in the polypeptide chain differs from protein to protein. C) each protein contains its own unique sequence of sugar molecules. D) the number of nucleotides found in each protein varies from molecule to molecule.

Biology & Microbiology

The (peroxide/superoxide/hydroxyl) radical is formed during the incomplete reduction of O2 during electron transport in aerobes

What will be an ideal response?

Biology & Microbiology