WorksheetsDNA and RNA Exam
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is the shape of DNA
a)
a circle
b)
a triangle
c)
a double helix
d)
a single strand
2.
In DNA, what base pairs with guanine (G) on the other strand?
a)
Thymine (T)
b)
Cytosine (C)
c)
Guanine (G)
d)
Adenine (A)
3.
What will the matching sequence be on a strand that reads AAGCTAT?
a)
CCTGATA
b)
TTCGATA
c)
TTCGTTA
d)
AACGATA
4.
This picture is showing the process of
a)
DNA replication (making a copy of DNA for cell division)
b)
Transcription (making a copy of DNA in the form of mRNA)
5.
Structure A shows a highly coiled and organized strand of DNA. This structure is called a(n) ________.
a)
nucleotide sequence
b)
gene
c)
chromosome
6.
Numbers 1 and 2 are pointing to two different _________ located on the chromosome.
a)
genes
b)
chromosomes
c)
nucleotides
7.
Item C is showing __________.
a)
the DNA sequence for one gene
b)
the DNA sequence for a whole chromosome
c)
an RNA sequence
8.
How many pairs of chromosomes are in the normal human body cell?
a)
10 pairs
b)
20 pairs
c)
23 pairs
d)
27 pairs
9.
DNA has the code or instructions to make ______________.
a)
sugars
b)
fats
c)
proteins
d)
nucleotides
10.
_______________ replaces thymine in RNA.
a)
Adenine
b)
Uracil
c)
Guanine
d)
Cytosine
11.
A change in a DNA sequence that affects genetic information.
a)
recessive trait
b)
allele
c)
mutation
12.
Which organelle is DNA usually found in?
a)
cell membrane
b)
valcuole
c)
chloroplast
d)
nucleus
13.
DNA is
a)
single stranded
b)
double stranded
c)
tripple stranded
14.
Which of the following is a most likely sequence of RNA?
a)
ATTGC
b)
GCTTA
c)
CATGC
d)
CGUAA
15.
Which kind of mutation is illustrated in the picture?
a)
Substitution
b)
Deletion
c)
Insertion
16.
Which kind of mutation is illustrated in the picture?
a)
Substitution
b)
Deletion
c)
Insertion
17.
a)
a sex-linked trait
b)
a dominant nucleotide
c)
a mutation in the genetic code
18.
What is the correct order of information flow in a cell?
a)
Amino acids → Protein → DNA → mRNA
b)
DNA → mRNA → Amino acids → Protein
c)
Gene → Protein → mRNA → DNA
d)
DNA → Protein → mRNA → Amino acids
19.
What do amino acids build?
a)
DNA
b)
mRNA
c)
Proteins
d)
Genes
20.
Which part of the cell acts like a protein factory?
a)
Nucleus
b)
Ribosome
c)
Chromosome
d)
Gene
100 %
