What separates the strands of DNA in the polymerase chain reaction (PCR) technique?

A. Centrifuge
B. Heat
C. Restriction enzymes
D. Helicase


Answer: B

Biology & Microbiology

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Which type of lifestyle is demonstrated by bacteria in biofilms?

A. Sessile B. Photoautotrophic C. Planktonic D. Parasitic

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If a 10% sugar solution is separated from a 20% sugar solution by a selectively permeable membrane, in which direction will there be a net movement of water? Explain.

What will be an ideal response?

Biology & Microbiology

Unlike members of the Bacteria, most archaeans have linear chromosomes. 

Answer the following statement true (T) or false (F)

Biology & Microbiology

What term describes an exotic species that thrives in a new habitat and quickly threatens the existing environment?

a. a pest species b. a keystone species c. an advanced predator species d. an invasive species

Biology & Microbiology