ALL hyperthermophiles with growth temperature optima above 100°C are found at
a. terrestrial hot sulfur springs.
b. the open ocean.
c. geothermally heated soil.
d. hydrothermal vents.
Answer: D
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A monoclonal antibody reacts against____
a. a single antigenic determinant b. different epitopes on the same antigen c. different antigens of the same organism d. a single type of pathogen e. different types of macromolecules on the same pathogen
Which structure protects the brain from harmful substances traveling in the blood?
a. the cerebrospinal fluid b. the cerebellum c. the blood-brain barrier d. the ventricles e. the meninges
The DNA sequence capable of pairing with 5' CGATTAGT 3' is:
A. 3' GCTAATCA 5'. B. 5' GCTAATCA 3'. C. 3' CGATTAGT 5'. D. 5' CGATTAGT 3'.
Which of the following is a product of DNA replication?
a. a new strand of DNA b. rRNA c. tRNA d. mRNA