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
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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.
Birds have
A. a backcurrent lung. B. an air sac lung. C. a parabronchial lung. D. a negative pressure lung. E. a tracheal lung.
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.
Which molecules recognize specific codons and transport amino acids to translate those specific codons?
A. tRNA B. rRNA C. DNA D. mRNA