The strongest chemical bonds are
A. Van der Waal forces.
B. hydrophobic interactions.
C. covalent bonds.
D. hydrogen bonds.
E. ionic bonds.
Answer: C
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The cessation of regular menstrual cycles due
to age is called
a. menopause. b. the luteal phase. c. the follicular phase. d. PMS. e. menstruation
Which of the following name two mutagens that would be classified as base analogs?
A) ultraviolet light and cosmic radiation B) 5-bromouracil and 2-amino purine C) acridine orange and proflavin D) hydroxyurea and peroxidase E) ethylmethane sulfonate and ethylmethylketone peroxide
Which of the following protist lineages does NOT belong to the supergroup Excavata?
a. Kinetoplastids b. Parabasalids c. Diplomonadas d. Diatoms
Anaerobic bacteria may use ________ as the final electron acceptor during anaerobic respiration
A) nitrate only B) carbon dioxide only C) sulfate only D) both nitrate and sulfate E) carbon dioxide, nitrate and sulfate