DNA and RNA are polymers composed of ________ monomers
A) nucleotide
B) carbohydrate
C) fatty acid
D) amino acid
A
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During which phase of the bacterial growth curve does the total number of viable cells decline?
A. Stationary B. Lag C. Exponential D. Death
Represented by only one living genus, Equisetum, ____ have leaves in whorls around a photosynthetic stem that is
stiff and gritty because it is rich with silica.
a. mosses b. whisk ferns c. ferns d. club mosses e. horsetails
Negative feedback systems are common in mammals because they act to maintain:
(a) homeostasis (b) body temperature (c) blood glucose levels (d) body fat
A "summer cold" that lasts for weeks and is characterized by sore throat, mild fever, dry cough, and malaise may be (pneumococcal/staphylococcal/walking) pneumonia.
Fill in the blank(s) with the appropriate word(s).