The phenomenon of microbial antagonism can be explained by
a. certain normal biota directly kill other species by phagocytosis
b. normal biota members change the chemical environment making it hostile to other species
c. the immune system only recognizes certain species for destruction
d. there is limited space for occupation in or on certain areas of the human body
b. normal biota members change the chemical environment making it hostile to other species
d. there is limited space for occupation in or on certain areas of the human body
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How many water molecules are produced during the formation of a triglyceride from fatty acids and glycerol?
A. 0 B. 1 C. 2 D. 3 E. 4
If a mutated DNA sequence produces a protein that differs in one central amino acid from the normal protein, which of the following kinds of mutations could have occurred? View Available Hint(s) If a mutated DNA sequence produces a protein that differs in one central amino acid from the normal protein, which of the following kinds of mutations could have occurred?
a. A deletion mutation. b. An addition mutation c. None. d. An addition mutation and a deletion mutation.
An animal that only eats plants is a(n) ________
Fill in the blank(s) with correct word
Adult stem cells are always unipotent.
Answer the following statement true (T) or false (F)