A molecular analysis of plasma or nuclear membranes would reveal the presence of _____

a. cellulose and chitin
b. suberin and cutin
c. phospholipids and proteins
d. microtubules and microfilaments
e. phospholipids and nucleic acids


ANSWER: c

Biology & Microbiology

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A febrile and pneumonic illness first named in 1976 by scientists at the Centers for Disease Control and Prevention (CDC) who were investigating an epidemic of pneumonia among Penn-sylvania State American Legion members attending a convention in Philadelphia is known as:

a. Philadelphia pneumonia. b. legionnaires' disease. c. tuberculosis. d. rheumatic fever.

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Birds have

A. a backcurrent lung. B. an air sac lung. C. a parabronchial lung. D. a negative pressure lung. E. a tracheal lung.

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In the formula, dN/dt = rN(K-N)/K, the rate of population growth approaches zero as

A. carrying capacity approaches zero. B. the age-specific fertility rate approaches zero. C. the per capita growth rate declines. D. the population size approaches the carrying capacity.

Biology & Microbiology

Which molecules recognize specific codons and transport amino acids to translate those specific codons?

A. tRNA B. rRNA C. DNA D. mRNA

Biology & Microbiology