In Griffith’s experiments, what made the harmless R cells grow capsules when exposed to heat-killed S cells?

a. Protein
b. DNA
c. Lipids
d. Polysaccharides


Answer: b. DNA

Biology & Microbiology

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Explain the basic mechanism CRISPR in DNA manipulation

What will be an ideal response?

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“A change over time” is the definition of ____

a. classification b. ecology c. physiology d. evolution e. heritage

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In which way would males and females differ in terms of chromosomes?

A) the total number of autosomes B) the loci for the majority of their genes C) the types of sex chromosomes D) the inheritance of one X chromosome from their mother E) the need for two sex chromosomes

Biology & Microbiology

Which of the following is involved in translation?

A) rRNA only B) tRNA only C) mRNA only D) both mRNA and tRNA E) mRNA, rRNA, and tRNA are all involved.

Biology & Microbiology