RNA is ____ and contains the nitrogenous base ____, which is absent in DNA
a. single-stranded; thymine
b. double-stranded; uracil
c. single-stranded; uracil
d. double-stranded; thymine
e. single-stranded; cytosine
c
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Which statement about electrons is true?
a. Electrons reside outside of the nucleus and have a charge of -1. b. Electrons reside inside of the nucleus and have a charge of +1. c. Electrons have a mass of 1 and a charge of +1. d. Electrons have a mass of 1 and a charge of -1.
Chromosomes are made of a combination of DNA, carbohydrate, and lipid molecules.
a. true b. false
Figure _________ represents meiosis II for an organism with a diploid number of 4.
A. A
B. B
C. C
D. D
Which of the following etiologic agents results in the formation of abscesses?
A) Staphylococcus B) Mycoplasma C) Streptococcus D) Blastomyces E) Coccidioides