The sexually transmitted diseases ________ and ________ can cause pelvic inflammatory disease, in which fallopian tubes become scarred and blocked.
A. chlamydia; syphilis
B. gonorrhea; genital herpes
C. gonorrhea; chlamydia
D. syphilis; genital herpes
Answer: C
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Which of the following is not true of the reaction catalyzed by RNA polymerases?
A. Template DNA is copied in the 3' to 5' direction. B. The 3'-hydroxyl group of the growing RNA strand is a nucleophile. C. The reaction is magnesium ion-dependent. D. U residues are incorporated into the RNA to pair with T residues of the template. E. The RNA molecule is synthesized in the 5' to 3' direction.
Identify the principal role of cellular respiration
A) To convert solar energy into the chemical energy of sugars B) To convert kinetic energy into the chemical energy of sugars C) To convert the chemical energy of sugars into the chemical energy that fuels life's processes D) To convert the chemical energy of sugars into heat to maintain an elevated body temperature
What is the fluid-filled sac within the inner membrane of a chloroplast called?
a. grana b. lumen c. stroma d. thylakoid e. electron acceptor
Protist survival is limited mainly by
A) host availability. B) availability of moisture. C) speed at which they can bud off new cells. D) trophozoite size.