What is the name of the human disorder in which a deletion from chromosome 5 typically leads to severe mental retardation and a malformed larynx?

a. triple-X syndrome
b. cri-du-chat
c. Down syndrome
d. Turner syndrome


Ans: b. cri-du-chat

Biology & Microbiology

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Spherical-shaped bacteria that divide and remain attached in a chain-like pattern are called:

A. Staphylococci B. Streptococci C. Streptobacilli D. Staphylobacilli

Biology & Microbiology

If, during a dissection, you were asked to place a pin in the part of the kidney containing the collecting duct, you would pin the

What will be an ideal response?

Biology & Microbiology

True cocci, such as most Neisseria spp. and Moraxella catarrhalis, can be differentiated from morphologically similar Moraxella species by:

a. comparing the penicillin susceptibility testing results of the bacteria. b. subjecting the bacterium to noninhibitory concentrations of penicillin. c. identifying the resistance of Moraxella to many <-lactam antimicrobial agents. d. performing the deoxyribonucleic acid (DNA) test.

Biology & Microbiology

Attenuated agents

A. may induce immunity after a single dose. B. may cause disease in immunocompromised individuals. C. multiply in the body. D. may revert or mutate to disease-causing strains. E. All of the choices are correct.

Biology & Microbiology