Which pathogen has drug resistant strains called MRSA?
A. Staphylococcus aureus
B. Staphylococcus epidermidis
C. Staphylococcus saprophytic-us
D. Streptococcus pyogenes
E. Streptococcus agalactiae
Ans: A. Staphylococcus aureus
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Why is mutation described as the only process that can increase genetic variation?
A. It is the only process that can produce new alleles. B. It is the only process that changes allele frequency. C. It is the only process that cannot be influenced by artificial selection. D. It is the only process that is not random. E. It is the only process that can produce deleterious results.
A reason given by scientists as to why viruses are not considered living organisms is that
A. viruses can be frozen and still survive. B. viruses do not reproduce on their own. C. viruses are all smaller than the smallest known cells. D. viruses do not contain a nucleus. E. viruses do not contain genetic information.
Which of the following contains the most cells?
A) an organism B) an organ system C) an organ D) tissue
________ is the process by which hydrogen ions move via a concentration gradient through ATP-synthesizing enzymes, resulting in the production of ATP
Fill in the blank(s) with correct word