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

Biology & Microbiology

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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.

Biology & Microbiology

Chromosomes are made of a combination of DNA, carbohydrate, and lipid molecules.

a. true b. false

Biology & Microbiology

Figure _________ represents meiosis II for an organism with a diploid number of 4.



A. A
B. B
C. C
D. D

Biology & Microbiology

Which of the following etiologic agents results in the formation of abscesses?

A) Staphylococcus B) Mycoplasma C) Streptococcus D) Blastomyces E) Coccidioides

Biology & Microbiology