Life Science Review 6.2 Question Preview (ID: 12003)


How DNA Works. TEACHERS: click here for quick copy question ID numbers.

In __________ cells DNA is ___________
a) eukaryotic; in a loop
b) prokaryotic; in a loop
c) prokaryotic; bundled
d) 2 of the choices

Which of the following is correct
a) chromatin is DNA loosely bundled around protein
b) chromosomes are DNA loosely bundled around protein
c) chromosomes are copies of genetic material
d) chromatin are copies of genetic material

3 bases code for a(n) __________ which forms ________
a) amino acid; protein
b) gene; protein
c) amino acid; trait
d) gene; trait

Which of the following is a function of protein?
a) chemical trigger for reactions
b) determine traits
c) both of the choices
d) none of the choices

What is not a similarity between RNA and DNA?
a) RNA is a nucleic acid
b) RNA contains uracil
c) RNA provides a code for amino acids
d) none of the choices

Which RNA is correctly matched with its function?
a) tRNA- adds amino acids
b) mRNA- adds amino acids
c) rRNA- carries the code
d) tRNA- carries the code

which of the following is in the correct order?
a) DNA is copied, mRNA leaves nucleus, mRNA finds a ribosome, tRNA adds amino acids
b) DNA is copied, mRNA finds a ribosome, mRNA leaves nucleus, tRNA adds amino acids
c) mRNA leaves nucleus, DNA is copied, mRNA finds a ribosome, tRNA adds amino acids
d) mRNA leaves nucleus, mRNA finds a ribosome, DNA is copied, tRNA adds amino acids

A sequence of DNA reading AAATTTCCC is mutated and now reads AAATTTGCCC. The mutation was a(n)
a) insertion
b) deletion
c) substitution
d) all of the choices

A sequence of DNA reading AAATTTCCC is mutated and now reads AAATTTGCC. The mutation was a(n)
a) substitution
b) insertion
c) deletion
d) all of the choices

What use of genetic knowledge would cloning fall under?
a) genetic engineering
b) genetic identification
c) selective breeding
d) genetic breeding

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