Answer the following questions true (T) or false (F)
1. Florence Nightingale investigated processes for aseptic surgery and her work in the 1860s proved that sterilizing instruments, and sanitizing wounds with carbolic acid encouraged healing and prevented pus formation.
2. Only a small minority of microbes are human pathogens.
3. Proper hand-washing technique can remove normal microbiota.
1. FALSE
2. TRUE
3. FALSE
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The osmoregulatory/excretory system of an insect is based on the operation of _____
A) protonephridia B) metanephridia C) Malpighian tubules D) nephrons E) ananephredia
Twin spotting provides evidence of what genetic event?
A. Meiotic recombination B. Mitotic recombination C. Linkage D. Mutation E. Biological evolution
What is an example of an osmoregulator?
a. Jellyfish b. Fish c. Sea anemones d. Tunicates
How much of your DNA is identical to the person who sits next to you in biology class?
A. 1% B. 50% C. 90% D. 99.9% E. 99%