Which of the following is described as a spore-forming, gram-positive Bacillus that is hemolytic, motile, Voges-Proskauer (VP)–positive, and citrate-positive and causes two types of food poisoning as a result of toxin release?
a. C. diphtheria
b. B. anthracis
c. B. cereus
d. C. jeikeium
C
B. cereus is another important species to identify. It is resistant to penicillin, c-hemolytic, and motile, and it produces a wide zone of lecithinase on egg yolk agar.
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Antibodies enhance ____ of bacteria and viruses because cells, such as macrophages, have receptors on their surfaces
that recognize the ____ end of antibodies.
a. phagocytosis; heavy-chain b. phagocytosis; antigen-binding c. neutralization; heavy-chain d. neutralization; light-chain e. phagocytosis; light-chain
________ water is a slowly exchanging pool, and once it becomes polluted it is difficult to clean up
Fill in the blank(s) with correct word
An organism that lacks a nucleus is called a(n):
A. Prokaryote B. Eukaryote
Sexual reproduction in unicellular algae is accomplished by the cell acting as a (gamete/spore/zygote)
What will be an ideal response?