Worksheetschapter 5 test L1-3 REVIEW -7th Grade )
Total questions: 38
Worksheet time: 20mins
Name
Class
Date
1.
Parents pass their traits to offspring through
a)
genes
b)
chromosomes
c)
genetic inheritance
d)
RNA
2.
The shape of DNA is
a)
ladder
b)
circle
c)
staircase
d)
double helix
3.
The edges or sides of DNA are made of
a)
sugar molecules
b)
nitrogen bases
c)
phosphate molecules
d)
double helix
4.
Chromosomes are made of .....
a)
DNA
b)
proteins
c)
nitrogen bases
5.
The order of the nitrogen bases in DNA form
a)
sugar molecules
b)
RNA
c)
genetic code
d)
traits
6.
When creating DNA adenine is always paired with
a)
guanine
b)
thymine
c)
uracil
d)
cytosine
7.
When creating DNA cytosine is always paired with
a)
adenine
b)
thymine
c)
uracil
d)
guanine
8.
DNA is in all cells except
a)
white blood cells
b)
skin cells
c)
red blood cells
d)
liver cells
9.
What contains the code that determines a protein's structure?
a)
gene
b)
daughter cell
c)
chromosome
d)
protein synthesis
10.
What shape is RNA classified as?
a)
Double Helix
b)
Single Helix
c)
Ladder
d)
Triple Helix
11.
Why is DNA replication important
a)
We all need a specific code per cell
b)
daughter cells need a complete set of DNA to survive
c)
amino acids need to replicate
d)
nitrogen bases need tpo read their pairing
12.
What forms when a cell divides?
a)
gene
b)
daughter cells
c)
amino acids
d)
a new person
13.
What is DNA replication?
a)
DNA unwinds and nitrogen bases randomly pair up
b)
DNA separates and nitrogen bases separate
c)
DNA unwinds and the nitrogen bases in the nucleus pair up with the bases on each half of the DNA
d)
DNA joins with the nitrogen bases to pair up and make a whole new DNA
14.
All proteins are made up of
a)
amino acids
b)
nucleotides
c)
sugar molecules
15.
The order of the ______________decides which protein will be made.
a)
sugar bases
b)
genetic code
c)
nitrogen bases
16.
______________________ is the making of proteins
a)
protein synthesis
b)
translation
c)
transcription
d)
protein dioxyribose
17.
Protein synthesis occurs in the
a)
cytoplasm
b)
nulcleus
c)
mitocondria
d)
nucleolus
18.
In protein synthesis what carries the DNA from the nucleus to the cytoplasm?
a)
tRNA
b)
RNA
c)
mRNA
d)
ribosomes
19.
Translation occurs in the ___________
a)
nucleus
b)
cytoplasm
20.
Mark all that is true about RNA
a)
RNA has 1 strand
b)
RNA has the same sugar molecues as DNA
c)
RNA does not have thymine
d)
RNA has uracil
21.
What does messenger RNA or mRNA do?
a)
copies the message from the DNA and takes it to the ribosomes
b)
copies the message from the DNA and implements the changes
c)
carries the amino acids to the ribosomes
d)
adds amino acids to the proteins
22.
What does transfer RNA or tRNA do?
a)
copies the message from the DNA and takes it to the ribosomes
b)
copies the message from the DNA and implements the changes
c)
carries the amino acids to the ribosomes and adds it to the protein.
d)
adds amino acids to the proteins
23.
Transcription happens in the ______________
a)
cytoplasm
b)
nucleus
c)
DNA
d)
ribosomes
24.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
25.
Which sugar is found in DNA?
a)
ribose
b)
deoxyribose
c)
sucrose
d)
glucose
26.
Which bases are found in DNA?
a)
Uracil
b)
Cytosine
c)
Thymine
d)
Guanine
27.
Which base is NOT found in RNA?
a)
Uracil
b)
Cytosine
c)
Thymine
d)
Guanine
28.
Which type of RNA determines the order of amino acids in a polypeptide?
a)
mRNA
b)
rRNA
c)
DNA
d)
tRNA
29.
Which type of RNA is responsible for bringing amino acids to the ribosome?
a)
mRNA
b)
rRNA
c)
DNA
d)
tRNA
30.
Which process takes place outside of the nucleus?
a)
DNA replication
b)
Transcription
c)
Translation
d)
Ribosome production
31.
What are proteins composed of?
a)
DNA
b)
A Single Helix
c)
Amino Acids
d)
RNA
32.
What does mRNA stand fo
a)
Messenger RNA
b)
Maximum RNA
c)
Manager RNA
d)
Master RNA
33.
Where does translation occur?
a)
Nucleus
b)
Ribosome
c)
Lysosomes
d)
Cytoplasm
34.
Where does transcription occur?
a)
Nucleus
b)
Ribosome
c)
Lysosomes
d)
Cytoplasm
35.
What is Thymine replaced with in RNA?
a)
Uracil
b)
Guanine
c)
Adenine
d)
Cytosine
36.
A change in the DNA of a gene or chromosome is?
a)
protein synthesis
b)
cancer
c)
mutation
d)
tumor
37.
When mutations disrupt normal cell cycle.
a)
protein synthesis
b)
cancer
c)
mutation
d)
tumor
38.
A mass of abnormal cells
a)
protein synthesis
b)
cancer
c)
mutation
d)
tumor
100 %
