Red blood cells have specific carbohydrate molecules on their surface that are called
Answer: Antigens
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The body’s inner surfaces are protected against penetration by harmful microorganisms by ____
a. water permeable outer skin layers b. watery mucus c. high pH of gastric and vaginal environments d. cilia e. warm, moist environments
Present the general structural features of a plasmid and give an example
What will be an ideal response?
Which of the following statements is true of selective toxicity?
A) Selective toxicity takes advantage of structural similarities between host and pathogen. B) To be effective, an antimicrobial agent must be more toxic to the patient than the pathogen. C) Selective toxicity takes advantage of differences in metabolic rates of the host and pathogen. D) Selective toxicity damages only pathogenic bacteria and not beneficial bacteria. E) Selective toxicity takes advantage of structural and/or metabolic differences between host and pathogen.
If a DNA sequence reads TTGCGATCG, what mRNA will it encode?
A) AACGCUAGC B) TTGCGUTCG C) UUCGCTUGC D) AACGCTAGC E) TTGCGATCG