Bacterial vaginosis is always caused by sexual transmission.
Answer the following statement true (T) or false (F)
False
How bacterial vaginosis is acquired is not well understood, but females who are not sexually active get BV as well.
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Which of the following statements regarding Bacillus anthracis is incorrect?
A. It is a gram-positive bacillus. B. A capsule and exotoxins are virulence factors. C. Its reservoir includes grazing animals and soil. D. It grows primarily under anaerobic conditions. E. It is capable of forming endospores.
What is one difference between ubiquinones and cytochromes?
a. Ubiquinones can only be reduced; cytochromes can only be oxidized. b. Ubiquinones are not made of protein; cytochromes are. c. Ubiquinones cannot carry electrons; cytochromes can. d. Ubiquinones can only be oxidized; cytochromes can only be reduced.
Answer the following statements true (T) or false (F)
1. One gram of hydrogen, which has an atomic mass of 1, would have fewer atoms than 1 gram of carbon that has an atomic mass of 12. 2. Isotopes are different forms of the same element. 3. Sulfur 35 (35S) is an isotope of 32S. These elements differ in their number of neutrons. 4. Helium is an inert gas that rarely reacts with other elements because it has the maximum number of valence electrons in its outer shell.
In pre-mRNA processing, ____
a. exons are spliced out and used to produce ribosomal subunits b. introns are spliced out and combined to form complete proteins c. introns are spliced out and combined in the tRNA d. exons are spliced out and the introns are combined in the mature mRNA e. introns are spliced out and the exons are combined in the mature mRNA