Fridtjof Nansen contributed greatly to our knowledge of the Arctic regions
Indicate whether the statement is true or false
T
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The bacteria that appear to maintain balance between the members of the normal microbiota and play a vital role in limiting colonization by pathogens are
A. staphylococci. B. diptheroids. C. Candida spp. D. Malassezia spp.
Transformation was discovered by:
a. Francois Jacob. b. Elie L. Wollman. c. Gregor Mendel. d. Joshua Lederberg. e. Fred Griffith.
Which of the following statements is
INCORRECT?
a. There are differences in the quality of energy. b. Once energy is utilized, it is not seen in any other form. c. Whenever energy conversion occurs, some energy is lost. d. One form of energy can be converted to other forms of energy. e. The universe has a definite amount of energy.
Plants control the diffusion of water vapor and gases across the epidermis by means of ____.
A. xylem B. phloem C. periderm D. companion cells E. stomata