Download Intro Biology Practice Questions #2 Use the

Intro Biology
Practice Questions #2
Use the information and the diagram below to answer
Numbers 1 through 3.
Part of the process of protein synthesis is shown below.
The different structures in this process are numbered 1
through 5.
_____5. The structure of DNA was discovered in 1953
by ______________. It was found to be a
______________.
A.
B.
C.
D.
Franklin & Wilkins; double helix
Franklin & Wilkins; circular shape
Watson & Crick; double helix
Watson & Crick; circular shape
_____6. 11. Transcription of the DNA sequence,
AAGCTGGGA would most directly result in which of the
following?
A. a sequence of three amino acids, linked by
peptide bonds
B. a DNA strand with the base sequence
TTCGACCCT
C. a mRNA strand with the sequence TTCGACCCT
D. a mRNA strand with the sequence UUCGACCCU
_____1. Structure 2 in the diagram represents a
A. ribosome
B. mitochondrion
C. protein
D. chloroplast
_____7. A function of a DNA molecule is shown below.
_____2. The process shown in the diagram occurs in
the
A. nucleus
B. cytoplasm
C. vacuole
D. chromosome
_____3. Structure 1 is produced in what part of the
cell?
A. vacuole
B. cytoplasm
C. mitochondria
D. nucleus
_____4. Which of the following is correctly matched
with its function?
A. rRNA – contains codes to make new ribosomes
B. DNA – carries the amino acids to the ribosomes
C. tRNA – combines with proteins to make up
ribosomes
D. mRNA – carries genetic codes from nucleus to
the ribosomes
What process is represented by the diagram?
A.
B.
C.
D.
mutation
translation
replication
transcription
_____8. Which of these would most likely cause a
mutation?
A. the placement of ribosomes on the
endoplasmic reticulum
B. the insertion of a nucleotide into DNA
C. the movement of transfer RNA out of the
nucleus
D. the release of messenger RNA from DNA
_____9. A base sequence is shown below.
ACAGTGC
How would the base sequence be coded on mRNA?
A. TGTCACG
B. GUGACAU
C. UGUCACG
D. CACUGUA
_____12.
ATCAGCGCTGGC
The above sequence of DNA is part of a gene. How
many amino acids are coded for by this segment?
A. 4
B. 8
C. 12
D. 20
_____10.
_____13.
GTA___AA
CATGCATT
This segment of DNA has undergone a mutation in
which three nucleotides have been deleted. A repair
enzyme would replace them with
A. CGT.
B. GCA.
C. CTG.
D. GTA.
_____14.
Which series of bases will complete this strand of DNA?
A strand of mRNA containing the repeating sequence
AAGAAGAAGAAG could code for which of the following
amino acid sequences?
A. lys–arg–glu–lys
B. ser–ser–glu–glu
C. lys–arg–lys–arg
D. lys–lys–lys–lys
______11. The triplet code of bases for RNA may
be represented by all of the following
except —
A. CGT
B. CGA
C. CGG
D. CGU
A.
B.
C.
D.
CCTGAT
ACTGGC
GTAGGC
TCAGGG
_____15. A segment of a DNA strand has the following
bases:
TAC GAT
What is the complementary strand of DNA?
A.
B.
C.
D.
UAG CAU
TAG CAT
ATG CTA
AUG CUA
_____16. Which of the following is a DNA nucleotide?
A.
B.
C.
D.
Ribose, adenine, phosphae
Ribose, uracil, phosphate
Phosphate, deoxyribose, thymine
Phosphate, deoxyribose, adenine