The main purpose of fermentation reactions is to
a. produce ATP.
b. regenerate the electron carriers needed for glycolysis.
c. produce the building blocks for biological molecules.
d. prepare the pyruvate for the Krebs cycle.
e. provide various products useful for man.
B
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A nuclear envelope has four of the following characteristics. Which is the exception?
a. single lipid bilayer b. continuous with endoplasmic reticulum c. possesses pores d. controls passage of substances into and out of nucleus e. separates DNA from cytoplasm
Organisms, such as plants, that make their own food are called
a) autotrophs. b) heterotrophs. c) thylakoids. d) pigments.
If a patient was not having menstrual periods, medical intervention might bring about the shedding of the endometrium by
A) blocking release of FSH. B) blocking release of LH. C) blocking release of HCG. D) blocking release of estrogen and progesterone.
All of the following pertain to red tides, except
A. due to overgrowth of toxin-producing dinoflagellates. B. due to overgrowth of red and brown algae in water. C. involve toxin concentrating in shellfish. D. humans can become ill from eating the shellfish. E. cause paralytic shellfish poisoning.