How many bones are in the human body?
A) 203
B) 206
C) 300
D) 308
B
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Which one of the following sexually transmitted diseases is characterized by a primary phase that affects the genitals, and secondary and tertiary phases that spread throughout the body?
A) chlamydia B) genital warts C) hepatitis B D) syphilis E) gonorrhea
What is the first reactant in the citric acid cycle?
A) pyruvic acid (C3H3O3) B) glucose (C6H12O6) C) carbon dioxide (CO2) D) oxalaoacetate (OAA)
An enzyme that has been isolated from retroviruses and is used to generate cDNA is
A. reverse endonuclease. B. recombinant RNase. C. RNA polymerase. D. transverse ligase. E. reverse transcriptase.
Answer the following questions true (T) or false (F)
1. Ferns differ from mosses in that ferns contain vascular tissue and mosses do not. 2. As a more recently evolved plant group, angiosperms completely lack a gametophyte generation. 3. Horsetails are a type of seedless vascular plant.