Permanent cardiovascular and neurological damage is seen in which stage of syphilis?
A. Tertiary
B. Secondary
C. Primary
D. Latent
Answer: A
You might also like to view...
True or false: only those mutations that occur in somatic (body) cells can be passed onto progeny
A. true B. false
Scientists can induce, or cause, mutations in DNA in a laboratory setting. What evidence would best support a scientist's claim that a certain mutation induced in a lab would have no phenotypic effect if it occurred in an actual organism?
A) The mutation affects an entire chromosome. B) The mutation is an insertion mutation. C) The mutation is in a gene that codes for an essential protein. D) The mutation does not change the protein generated by this gene
How might efflux pumps increase antibiotic resistance in bacteria?
a. Resistant bacteria may have a greater number of efflux pumps on their cell surfaces. b. Some bacteria can decrease the specificity of their efflux pumps, increasing the number of different antibiotics the pumps can eliminate. c. Some bacteria can change the chemical structure of the antibiotic. d. Efflux pumps can never be modified to increase antibiotic resistance. e. Resistant bacteria can have more efflux pumps, and can have less specific efflux pumps.
A voice changes from high to low pitch in speaking by
Select one: a. changing the volume of air that flows across the vocal cords. b. controlling the growth of the tissue. c. increasing the amplitude of the vocal cord vibrations. d. changing the tension on the vocal cords. e. changing the tension on the epiglottis.