Clostridium difficile is inoculated to two different media. Media X is a rich, nutritious complex growth media. Media Y is a minimal synthetic media containing only the minimum ingredients needed for growth. After 48 hours, which media do you expect to contain a greater proportion of endospores? Explain your reasoning.
What will be an ideal response?
Media X because it has rich nutrition for endospores to grow and divide.
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The information storage molecules of cells are called:
A. hormones. B. proteins. C. phospholipids. D. enzymes. E. nucleic acids.
The somatic nervous system controls
A) the brain and spinal cord. B) some glands. C) skeletal muscles. D) cardiac muscle. E) smooth muscle.
The precipitin test that involves antigen and antibody diffusing toward each other, producing a visible precipitin band at the point at which they meet, is referred to as:
a. double immunodiffusion. b. counterimmunoelectrophoresis. c. particle agglutination. d. enzyme immunoassay.
The release of chemical signals into the extracellular fluid to affect nearby target cells is an example of ____ regulation
a. autocrine b. endocrine c. paracrine d. systemic e. exocrine