Name_________________________ Period ____
MULTIPLE CHOICE: Circle the answer that BEST
completes the sentence.
Ribosomes are made out of _____________.
A. rRNA and proteins
B. phospholipids and proteins
C. glycoproteins and lipids
D. DNA and proteins
Which nucleotide is always paired with Adenine IN
A DNA MOLECULE?
A. Thymine
B. Guanine
C. Cytosine
D. Uracil
DNA replication results in two DNA molecules,
A. each with two new strands
B. one with two new strands and one with 2
original strands
C. each with two original strands
D. each with one new strand and one original
strand
Which type(s) of RNA is/are involved in protein
synthesis?
A. tRNA only
B. rRNA only
C. rRNA and mRNA only
D. all 3 kinds of RNA are involved
Where does transcription take place?
A. in the nucleus
B. on ribosomes in the cytoplasm
C. in Golgi bodies
D. inside the lysosomes
How is information transferred in cells during
protein synthesis?
A. PROTEINS  DNA  mRNA
B. DNA  PROTEINS  mRNA
C. PROTEINS  mRNA  DNA
D. DNA  mRNA  PROTEINS
Use the word bank to match the following:
TRANSCRIPTION
REPLICATION
TRANSLATION
HISTONES
____________ Process of making a complementary
RNA message from a DNA code (DNA  RNA)
____________ Process of making copy of a DNA
molecule (DNA  DNA)
____________ Process of making a protein from
an RNA message (RNAPROTEIN)
____________ Proteins around which DNA wraps
when it condenses into chromatin
Use the word bank to match the following:
(You can use them MORE THAN ONCE!)
mRNA
tRNA
rRNA
__________________ Carries the DNA code
from nucleus to cytoplasm
__________________ Adds the correct amino
acid to the growing polypeptide chain
__________________ Combines with proteins to
form ribosomes
__________________ Has a CODON region
__________________ Has an ANTICODON region
__________________
Where does translation take place?
A. in the nucleus
B. on ribosomes in the cytoplasm
C. in Golgi bodies
D. inside the lysosomes
__________________
DNA wraps around histones and coil up, which is
called __________________.
A. tRNA
B. chromatin
C. ribosomes
D. DNA polymerase
__________________
Name_________________________ Period ____
USING ANALOGIES:
Name the 3 parts of a nucleotide molecule:
If a double helix is compared to a “twisted
ladder”, which would the following
represent?
Sides of the ladder ? __________ and
___________
Rungs of ladder ? _____________
#1 =
_____________________
“Glue” that holds the NITROGENOUS BASES
____________________ bonds together in the
middle of the ladder?
#2 = ______________________
#3 = ______________________
Each CODON in an mRNA message is made of
______ nucleotides. (Fill in blank with a number)
Each CODON in an mRNA message represents
_______ amino acid. (Fill in blank with a number)
COMPARE AND
CONTRAST:
Is it Double OR
Single stranded?
List all nitrogen
bases it has
Which nitrogenous
base is missing?
Where is it found
in cells?
DNA
mRNA
Give the complimentary sequences and polypeptide
chain for the following DNA sequences:
Original DNA:
GTCAAATCGGTCCGA
Replicated DNA: _______________________
mRNA:
_______________________
Protein sequence:_______________________
Original DNA:
AAAGGGCCCTTTAAA
Replicated DNA: _______________________
mRNA:
_______________________
Protein sequence:_______________________
Original DNA:
GCATGCATGCATCAT
Replicated DNA: _______________________
mRNA:
_______________________
Protein sequence:_______________________