Which of the following statements is false?
a. Transcription uses a 3 nucleotide base system referred to as a codon.
b. DNA, through the use of RNA molecules, controls protein synthesis.
c. Proteins made during translation can act as enzymes.
d. DNA replication happens in the S phase of interphase.
e. Proteins are manufactured in the nucleus.
Answer: e. Proteins are manufactured in the nucleus.
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Identify the animal with the most advanced cephalization
a. a flatworm b. an arthropod c. a chordate d. a mollusk e. an echinoderm
Methylation regulates transcription
a. via the addition of a methyl group to cytosine bases of DNA. b. via the addition of a methyl group to cysteine residues on RNA polymerase II. c. via the addition of a methyl group to cysteine bases of DNA. d. via the addition of a methyl group to cytosine residues on RNA polymerase II. e. by interfering with the chromatin remodeling process.
In addition to aldosterone and cortisol, the adrenal cortex produces ____
a. epinephrine b. androgens c. sympathetic hormones d. vasopressin e. ADH
Viral genomes _________
(a) can be made of DNA. (b) can be made of RNA. (c) can be either double-stranded or single-stranded. (d) All answers above are true.