Name the four most important groups of biological molecules necessary for life. List one polymer and one monomer of each
What will be an ideal response?
Carbohydrates, lipids, proteins, and nucleic acids are the four groups. Examples for the polymers and monomers will vary, such as starch and glucose, fats and fatty acids, hemoglobin and amino acids, DNA and nucleotides.
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Transmembrane proteins must have:
A. a signal sequence. B. a signal-anchor sequence. C. a nuclear localization sequence. D. both a signal sequence and a signalanswer sequence.
What molecule must be added to the media for a strain of bacteria auxotrophic for alanine to grow?
A) Alanine B) Tryptophan C) Hisitidine D) Biotin
In humans the reproductive and renal/urinary systems share "plumbing" in
A. females B. males C. both males and females D. neither males nor females
To support the existence of life on Mars (or any other planet), why is it important to demonstrate the availability of liquid water?
What will be an ideal response?