Which of the following is not one of the starting materials of the citric acid?
a. FAD
b. NAD+
c. acetyl CoA
d. ATP
e. H2O
D
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There are different types of microscopes that can be used to provide information about cells. Which type of microscope is used for the observation of living cells?
A) light microscope B) scanning electron microscope C) transmission electron microscope
Mild, uncomplicated cases of pseudomembranous colitis may be treated by
A. debridement. B. wound cleansing. C. vancomycin for several weeks. D. withdrawal of antibiotics and replacement of lost fluids and electrolytes. E. All of the choices are correct.
Which of the following statements is TRUE?
a. Mosses have xylem and phloem. b. Mosses have true leaves. c. Mosses have true stems. d. Mosses have rhizoids, not roots, for attachment. e. Mosses have independent sporophytes.
All of the following are features of capillaries that promote exchange between blood and interstitial fluid EXCEPT which one?
A) Capillaries lack connective tissue in their walls. B) Capillary walls consist of a single layer of squamous epithelial cells. C) Capillary walls have pores within the cells and slits between the cells, making them "leaky." D) Capillary walls lack smooth muscle. E) Capillaries have tiny valves that keep the blood flowing in one direction.