Select the ultimate source of energy for nearly every organism on this planet.
A. ATP molecules
B. Plants
C. The sun
D. Sugars
Answer: C
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The Drosophila homeotic genes typically contain the homeobox. The homeobox is a sequence of 180 nucleotides. The number of amino acids coded for by this sequence is
A. 30. B. 60. C. 90. D. 120 E. 180.
Cancer chemotherapies are notoriously toxic to the patients because the drugs must attack the patient’s own cells. Recent studies have shown that risk of adverse reaction to chemotherapy is sometimes predictable using genomics. Which area of genomics studies risks such as these?
a. metagenomics b. evolutionary genomics c. toxicogenomics d. proteomics
The different tRNAs are produced by
A) different aminoacyl-tRNA synthetases that produce tRNAs from ribonucleotides in the cytoplasm. B) RNA editing of transcripts of a single tRNA gene. C) alternatively spliced of a single tRNA gene. D) transcription of different tRNA genes in the genome.
The experimental design in the accompanying figure was used to examine:
a. the relationship between genetic changes and metabolic enzymes.
b. the mutation rate of Neurospora.
c. resistance of Neurospora to genetic poisons.
d. toxicity of arginine metabolites.
e. growth of Neurospora in the presence of different antibiotics.