Biology and Chemistry Quiz
Biology and Chemistry Quiz
Test your knowledge of biology and chemistry with this comprehensive quiz! Covering a variety of topics from DNA structure to protein fun
Features:
- Multiple choice questions
- Covers key concepts in biochemistry
- Ideal for self-assessment and learning
Upon chemical analysis, a particular polypeptide was found to contain 100 amino acids. How many peptide bonds are present in this protein?
99
100
101
98
We have DNA with 130 Purine include 20 Guanine, so how many Thymine we have?
20
110
130
50
Find the sequence of the complementary strand of the following DNA strand 5'ATTCGGTCGA3'
5'TAAGCCAGCT3'
3'UAAGCCAGCU5'
3'TAAGCCAGCT5'
5'UCGACCGAAU3'
2 choices are correct
Find the sequence of the complementary strand of the following RNA strand 5'ATTCGGTCGA3'
5'TAAGCCAGCT3'
3'TAAGCCAGCT5'
3'UAAGCCAGCU5'
5'UCGACCGAAU3'
2 choices are correct
Nucleotide bases pair in DNA through:
Hydrogen bonds between complementary bases
Sugar bonds between complementary bases
Polar covalent bonds between complementary bases
None of the choices
What unique ability does DNA have because it is double-stranded?
It serves as genetic material in all viruses
It can move around the cells
It can serve as a template for its own copying
None of the choices
Which of the following statements is not true about RNA?
Does not have a double stranded structure
Thymine is present
The sugar contained in RNA is a ribose
Non of the above
Which ratio is constant for DNA?
A + G / T + C
A + T / G + C
A + C / U + G
A + U / G + C
Number of hydrogen bonds between adenine and thymine?
1
2
3
5
What is the composition of nucleotide backbone?
A sugar + a phosphate
A base + a sugar
A base + a phosphate
a base + a sugar + phosphate
Which of the following are not the components of RNA?
Adenine
Cytosine
Guanine
Thymine
Identify the purine base of nucleic acids in the following.
Cytosine
Adenine
Thymine
Uracil
Hemoglobin is made up of ___ protein chains.
2 Identical
6 identical
4 beta and alpha
1 alpha
Which protein structure is matched correctly?
Primary structure : folded amino acid chains due to hydrogen bonds
Secondary structure : interactions between more than one amino acid chain in a protein
Tertiary structure : 3D structure due to interactions of R groups on amino acids
Quaternary structure : chain of amino acids
This transport protein is used to move Oxygen throughout the body (to and from red blood cells).
Hemoglobin
Collagen
Antibodies
Insulin
What is a type of protein that protect against disease?
Sucrose
Insulin
Enzyme
Antibodies
Which of the following is a protein (amino acid)?
A
B
C
D
Which of the following is a false statement?
α-Keratin is α helical
Collagen is α helical
Hemoglobin has a quaternary structure
α-Keratin is β pleated structure
A coiled peptide chain held in place by hydrogen bonding between peptide bonds in the same chain is?
Primary structure
α-helix
Tertiary structure
β-pleated sheets
Which of the following is not the function of proteins?
Helps in digesting food
Carries genetic information
Fights against the invading pathogens
Helps in transporting oxygen in the blood
Which of the following cell organelles is involved in the process of protein synthesis?
Vesicles
Synchrotrons
Ribosomes
Mitochondria
How many amino acids make up a protein?
10
20
30
50
Which of the following factors is not responsible for the denaturation of proteins?
Heat
PH change
Organic solvents
Charge
The 3-D structure of protein can be determined by
Nuclear magnetic resonance
X-ray crystallography
Spectroscopy
both a and b
Disulphide bonds are formed between
Cysteine residues that are close together
Cystine residues that are close together
Proline residues that are close together
Histidine residues that are close together
Tertiary structure is maintained by
Ionic bond
Hydrogen bond
di-sulphide bond
All of the above
Fibrous protein such as silk fibroin consists of polypeptide chains arranged in
α-helix
β-pleated sheet
β-helix
None of these
The primary structure of protein represents
Linear sequence of amino acids joined by peptide bond
3-dimensional structure of protein
Helical structure of protein
Sub unit structure of protein
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