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Life Science Review 6.2
Test Description: How DNA Works
Instructions: Answer all questions to get your test result.
1) In __________ cells DNA is ___________
A
2 of the choices
B
prokaryotic; bundled
C
eukaryotic; in a loop
D
prokaryotic; in a loop
2) Which of the following is correct
A
chromosomes are DNA loosely bundled around protein
B
chromosomes are copies of genetic material
C
chromatin are copies of genetic material
D
chromatin is DNA loosely bundled around protein
3) 3 bases code for a(n) __________ which forms ________
A
amino acid; protein
B
amino acid; trait
C
gene; trait
D
gene; protein
4) Which of the following is a function of protein?
A
chemical trigger for reactions
B
none of the choices
C
determine traits
D
both of the choices
5) 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
6) Which RNA is correctly matched with its function?
A
tRNA- adds amino acids
B
mRNA- adds amino acids
C
tRNA- carries the code
D
rRNA- carries the code
7) which of the following is in the correct order?
A
DNA is copied, mRNA finds a ribosome, mRNA leaves nucleus, tRNA adds amino acids
B
mRNA leaves nucleus, DNA is copied, mRNA finds a ribosome, tRNA adds amino acids
C
DNA is copied, mRNA leaves nucleus, mRNA finds a ribosome, tRNA adds amino acids
D
mRNA leaves nucleus, mRNA finds a ribosome, DNA is copied, tRNA adds amino acids
8) A sequence of DNA reading AAATTTCCC is mutated and now reads AAATTTGCCC. The mutation was a(n)
A
insertion
B
substitution
C
deletion
D
all of the choices
9) A sequence of DNA reading AAATTTCCC is mutated and now reads AAATTTGCC. The mutation was a(n)
A
deletion
B
insertion
C
substitution
D
all of the choices
10) What use of genetic knowledge would cloning fall under?
A
genetic breeding
B
genetic identification
C
selective breeding
D
genetic engineering
*select an answer for all questions
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