A molecule with a sugar, a phosphate, and a nitrogen base is.
a) an amino acid
b) a fatty acid
c) a glucose
d) a nucleotide
Answer: d) a nucleotide
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Tetracycline and chloramphenicol are the drugs of choice for the treatment of many of the rickettsial diseases
Indicate whether the statement is true or false.
A female aphid reproduces parthenogenetically to create a colony of 10 clones of herself. Five of these individuals become "soldiers" and do not reproduce; instead, they defend the other five reproductive individuals from predatory insects
Consider a single soldier and a single reproductive female. From the soldier's perspective, each of that reproductive female's offspring are genetically equivalent to the soldier's own: A. siblings. B. offspring. C. nieces/nephews. D. first cousins. E. grandchildren.
Midocean ridges form:
a. anywhere in the middle of the ocean. b. in subduction zones. c. where oceanic crust is cracked and magma is emerging. d. in deep ocean trenches.
Which technique is used to help reduce experimenter bias?
A) Create experiments that are reproducible and repeatable. B) Control extraneous variables as much as possible. C) Include a control group in your experiment. D) Be aware of potential placebo effects. E) Keep the experimenter blind to the conditions in an experiment or its purpose.