Functionally, what is the muscle fiber's fundamental unit of contraction?
A) thick filament
B) thin filament
C) myofibril
D) sarcomere
D
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The commensal Neisseria spp. are often confused with pathogenic gram-negative diplococci. A simple test utilizing a blood agar plate and an antibiotic disk resulting in elongation of the cells assists in the differentiation of these organisms. Which antibiotic disk is utilized in this applica-tion?
a. Cephalosporin b. Vancomycin c. Penicillin d. Metronidazole
The kidneys function to rid the body of
a. excess water. b. excess solutes. c. toxins and drugs. d. metabolic wastes. e. all of these
Which is NOT a chromosomal abnormality?
a. deletion b. extra chromosomes c. translocation d. crossing over e. inversion
Red-green color blindness is an X-linked recessive
trait. Two normal-vision parents have a color-blind son. Indicate the genotype and phenotype of each parent and the son. What will be an ideal response?