In the process of nitrogen assimilation, ____ is converted to ____, which is then rapidly used to synthesize organic
molecules.
a. NH4+; NO3-
b. N2; NO3-
c. NO3-; NH4+
d. NH3; NH4+
e. NO3-; N2
ANSWER: c
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Some surgical procedures involve lowering a patient’s body temperature during periods when blood flow must be restricted. What effect might this have on enzyme-controlled cellular metabolism?
What will be an ideal response?
The __________ reactions convert _____ (B) to sugars
a. Calvin cycle; O2 b. light; CO2 c. Calvin cycle; CO2 d. light; O2
If the DNA nucleotides read ATG-CGT-GAC, the
amino acid sequence of the resulting polypeptide would be a. tyrosine – alanine – leucine. b. methionine – arginine – asparagines. c. histidine – glycine – praline. d. serine – lysine – glycine. e. all of these.
Duplication can be advantageous for evolution. While the correctly functioning DNA segment remains intact, duplication provides new copies of genes that can be altered to new functions
Unfortunately, duplication can also result in human genetic disorders. Please provide an example of a human genetic disorder that occurs when certain DNA sequences are duplicated.