Name one of the smallest, if not the smallest, animals that are sometimes referred to as "wheel animalcules."
A. planaria
B. parasitic mites
C. fruit flies
D. rotifers
E. parasitic
Answer: D
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Interaction between two distinct polypeptide chains is what type of structure in a protein?
A) primary structure B) secondary structure C) tertiary structure D) quaternary structure E) both primary and secondary structure
Which of the following is NOT a part of the
cell theory?
a. All organisms are cellular. b. Cells are the structural and functional units of life. c. All cells come from preexisting cells. d. All cells are approximately the same size. e. All cells have inheritable material
A doctor discovers that her patient can produce antibodies against some bacterial pathogens, but he is unable to protect himself against viral infections. The doctor suspects a disorder in her patient's
A. macrophages. B. B cells. C. cytotoxic T cells. D. plasma cells. E. suppressor T cells.
Which types of bacteria are inhibited from growing on Endo agar?
A) Gram-positive bacteria B) Gram-negative bacteria C) Lactose fermenting bacteria D) Nonlactose fermenting bacteria