Why aren't antibiotics used against the common cold?
A) Cold viruses have already evolved resistance to antibiotics.
B) Colds are caused by viruses and have never been affected by antibiotics.
C) Antibiotics are only active against infection in the blood but not the respiratory tract.
D) They're only effective if you take them within the first few hours of the infection.
B
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Each of the four Sanger sequencing reactions include
A. tRNA. B. a combination of the four different dideoxynucleotides. C. ATP. D. a single dideoxynucleotide triphosphate.
When nutrients are suboptimal for cell growth and division, the cell cycle arrests. At which stage of the cell cycle/checkpoint would you predict this arrest to occur?
A. G1 checkpoint B. G2 checkpoint C. M checkpoint D. G1, G2, and the M checkpoints E. It is not possible to answer with the information given.
Transfer of heat from a body to air or water that passes over its surface is:
1.Conduction
2.Convection
3.Radiation
4.Evaporation
Suppose you are examining the arrangement of bones in the hand. What type of study is this an example of?
a. a physiological study b. an anatomical study c. a taxonomic study d. an ecological study