Which method is often used to analyze proteins and nucleic acids by physical separation when estimating genetic variation in populations?

A) centrifugation
B) absorption spectrophotometry
C) electrophoresis
D) in situ hybridization
E) fluorometry


Answer: C

Biology & Microbiology

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Based on the same graph, substances B and C


A) show saturation kinetics.
B) are transported by a transporter protein.
C) do not move by simple diffusion.
D) choices A and B only
E) all of the above

Biology & Microbiology

Which of the following diseases may manifest themselves with painful genital ulcers?

A. chancroid B. rubeola C. herpes D. leptospirosis E. chancroid AND herpes

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The portion of tooth projects above the gum is called the called the

A. dentin B. pulp c. crown D. enamel E. cementum

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What gland, located in the brain, produces melatonin?

A. pineal gland B. pituitary C. thyroid gland D. adrenal gland E. pancreas

Biology & Microbiology