Choose the correct formula for the reaction that takes place between hydrogen and oxygen to produce

water.
a. H2 + O2 ? H2O
b. H + O ? H2O
c. 2H2 + O2 ? 2H2O
d. 2H2O + O2 ? 4H2O
e. 2H2 + 2O2 ? 2H2O


C

Biology & Microbiology

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Which one of the following sequences is most likely to form a hairpin with a 5 nucleotide loop?

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An organism with two copies of the same allele is said to be

a. Homozygous. b. heterozygous. c. phenotypic. d. genotypic. e. a hybrid.

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Which specific defense mechanism protects against foreign organisms that have managed to infect body cells by destroying these cells?

A) cell-mediated immune system B) antibody-mediated immune system C) pyrogens D) inflammatory response

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What are lipopolysaccharides associated with?

a. the outer membrane of Gram-negative bacteria b. the plasma membrane of Gram-positive bacteria c. the plasma membrane of both Gram-positive and Gram-negative bacteria d. the plasma membrane of Gram-negative bacteria

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