bases 1. Each amino acid is coded for by a single mRNA codon, consisting of A) 1

Question

bases 1. Each amino acid is coded for by a single mRNA codon, consisting of A) 1 ?) ? C) 6 D) 9 2. During transcription A) DNA replication occurs B) protein is produced C) the cell divides in half D) a molecule of RNA is produced 3. Which of the following is not part of a nucleotide (building block of DNA)? A) a sugar molecule B) an acid C) a nitrogenous base D) a phosphate group 4. Stem cells A) can only be grown from umbilical cord blood B) are best harvested from adult muscle tissue to get the most flexible cells C) are currently being used to produce an entirely new organism, and its legal! D) can be induced to become cells with special functions 5. To treat diabetes by gene editing, one would need to A) extract insulin from sheep or pigs B) grow bacteria that produce insulin in incubatons C) use stem cells to make new pancreases that produce insulin D) cut open the old, malfunctioning gene for insulin production, and insert the correct section repair" it 6. All of the following are warning signs that may indicate infertility except A) a history of miscarriage B) no pregnancy after one year of trying C) repeated urinary infections D) having been on the Pill for 5 or more years

Explanation / Answer

1. B. 3

A codon is made up of 3 bases.

2. D. a molecule of RNA is produced.

During transcription, a DNA is copied to form an RNA.

3. B. an acid

a nucleotide is made up of a sugar, nitrogenous base, and a phosphate molecule.

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