Unit 7 Review Sheet (Optional) Key Concepts: DNA structure

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Unit 7 Review Sheet
(Optional)
Key Concepts:
- DNA structure & function
- RNA structure & function
- the importance of proteins
- transcription
-
translation
mutations types & causes
vocab, vocab, vocab!
Vocabulary:
Refer to your Unit 7 Vocabulary Sheet for a list of terms that you should know.
Readings Covered:
Pages 344-353 and 362-376. This is parts of chapters 12 and 13 in your textbook.
What You Can Use During Your Test:
- #2 pencils
- your completed unit 6 vocabulary sheet
- one piece of white computer paper with hand-written notes, front and back
2. The diagram below shows new DNA being
made in the process of
a. DNA replication
b. Transcription
c. Translation
d. Transformation
3. The enzyme(s) involved in DNA replication are
a. RNA polymerase
b. DNA polymerase
c. Ligase
d. B. and C.
4. The process shown below in which the genetic
code of DNA is copied into a strand of RNA is
called
a. DNA replication
b. Transcription
c. Translation
d. Transformation
5. In mRNA, each codon specifies a particular
a. Nucleotide
b. Enzyme
c. Amino acid
d. Saccharide
Multiple Choice Answers: 1. B; 2. A; 3. D; 4. B; 5. C.
Practice Questions:
1. A nucleotide does NOT contain
a. A 5-carbon sugar
b. An amino acid
c. A nitrogen base
d. A phosphate group
6. Which of the following describes RNA?
a. RNA is usually double-stranded and
contains the base thymine
b. RNA is usually single-stranded and
contains the base uracil
c. RNA is longer than DNA and uses five
bases to encode information
d. RNA is made in the nucleus of cells and
never leaves
7. There are _____ different amino acids
a. 3
b. 20
c. 64
d. none of the above
8. Which of the following statements about the
genetic code is true?
a. A codon can specify more than one
amino acid
b. Every codon specifies a different amino
acid
c. Some codons specify the same amino
acid
d. Some codons have no function at all
9. The building block of DNA and RNA is the
_____________ while the building block of
proteins is ___________________.
10. The process of making proteins on a ribosome
based on instructions from mRNA as shown
below is called
a. DNA replication
b. Transcription
c. Translation
d. Transformation
11. A single gene mutation in a region of DNA
could transcribe the DNA sequence CAGTAT
into
a. GTCATA
b. GUCAUA
c. GTCUTU
d. GUAAUA
12. Label the chromosome mutations.
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