WorksheetsGenes and DNA
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What does DNA look like?
a)
a ball
b)
a straight line
c)
a twisted ladder
d)
links in a chain
2.
What is a string of nucleotides called?
a)
a ribosome
b)
a gene
c)
a transfer DNA
d)
a chromosome
3.
What does the job of unwinding, copying, and rewinding DNA inside a cell?
a)
proteins
b)
RNA
c)
chromosomes
d)
mutagens
4.
Who discovered that adenine always equals thymine in DNA?
a)
Rosalind Franklin
b)
James Watson
c)
Erwin Chargaff
d)
Francis Crick
5.
Along with a sugar and a phosphate, what is the third part of a nucleotide?
a)
a base
b)
a protein
c)
a chromosome
d)
a ribosome
6.
What does each gene have instructions for making?
a)
a cell
b)
a ribosome
c)
a protein
d)
RNA
7.
What structure reads the code on mRNA?
a)
a protein
b)
a ribosome
c)
a chromosome
d)
a gene
8.
What is a base found in RNA but not DNA?
a)
mutation
b)
uracil
c)
ribosomes
d)
none of the above
9.
When a change in the base sequence happens of a gene or DNA it is known as a
a)
mutation
b)
ribosome
c)
chromosome
d)
mRNA
10.
This has the code for all the proteins in an organism
a)
DNA
b)
transfer RNA
c)
Messenger RNA
d)
ribosomes
11.
This transfers amino acids from cytoplasm to the ribosomes
a)
transfer RNA
b)
messenger RNA
c)
DNA
d)
cytoplasm
12.
The "factory" where new proteins are made
a)
ribosomes
b)
chromosomes
c)
nucleus
d)
cytoplasm
13.
Cytosine always pairs with
a)
adenine
b)
thymine
c)
guanine
d)
all of the above
14.
A mutation in an organism can be
a)
helpful
b)
harmful
c)
has no effect
d)
all of the above
15.
Thymine always pairs with
a)
adenine
b)
guanine
c)
cytosine
d)
visine
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