An Informative Quiz On Basic Biochemistry

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Questions: 13 | Attempts: 19,993 | Updated: Oct 13, 2023

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An Informative Quiz On Basic Biochemistry - Quiz

Living organisms have a lot of chemicals and elements within them, and studying biochemistry is one way of opening ourselves to this. If you have just begun studying biochemistry, the informative quiz below on basic biochemistry is perfect for testing out what you know. Give it a try and see what you should read up on.

Questions and Answers

1.

Which one is odd here?
- A.
  
  Nucleic acid
- B.
  
  Monosaccharides
- C.
  
  Lipid
- D.
  
  Protein
Correct Answer
B. Monosaccharides

Explanation
a monosaccharide is a monomer; all the rest are polymers

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2
1
2.

This represents what biomacromolecules?
- A.
  
  Protein
- B.
  
  Lipid
- C.
  
  Carbohydrate
- D.
  
  Nucleic acid
Correct Answer
A. Protein

Explanation
if you don't recall the structure (amino acid), look at the elements: C, H, O, and N. that's protein.

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1
1
3.

Which would NOT be a correct match?
- A.
  
  Keratin - amino acid
- B.
  
  Phospholipid - fatty acid
- C.
  
  DNA - nucleotide
- D.
  
  Cellulase - monosaccharide
Correct Answer
D. Cellulase - monosaccharide

Explanation
this matches the example with the monomer. cellulASE is an enzyme, which is a protein. cellulOSE would be the carbohydrate.

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13
3
4.

If you wanted to get a lot of quick energy before a soccer match, which biomacromolecules would your body need to break down?
- A.
  
  Protein
- B.
  
  Nucleic acid
- C.
  
  Carbohydrate
- D.
  
  Lipid
Correct Answer
C. Carbohydrate

Explanation
carbohydrates are the main source of energy for cells.

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1
0
5.

A feature of nucleic acids not found in lipids is:
- A.
  
  Oxygen
- B.
  
  Potassium
- C.
  
  Phosphorus
- D.
  
  Hydrogen
Correct Answer
B. Potassium

Explanation
The feature of nucleic acids not found in lipids is Potassium. Nucleic acids, such as DNA and RNA, contain elements like oxygen, phosphorus, and hydrogen, but they do not typically contain potassium. Potassium is not a common component of nucleic acids. Lipids, on the other hand, do not contain these elements in the same way nucleic acids do, and their composition is primarily based on carbon, hydrogen, and oxygen.

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12
4
6.

Unlike saturated fatty acids, unsaturated fatty acids contain what kind of bonds between carbon atoms?
- A.
  
  Double
- B.
  
  Single
- C.
  
  Hydrogen
- D.
  
  Covalent
Correct Answer
A. Double

Explanation
the bonds between atoms in both saturated and unsaturated are covalent. hydrogen bonds occur between atoms of different molecules. both have single bonds, but only unsaturated fatty acids have DOUBLE bonds, thus providing more space in between hydrogen atoms so the lipid can move more. this is why unsaturated fats are liquid at room temperature.

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10
3
7.

A biomacromolecule which consists of a polymer of fatty acids is a
- A.
  
  Nucleotide
- B.
  
  Lipid
- C.
  
  Carbohydrate
- D.
  
  Amino acid
Correct Answer
B. Lipid

Explanation
two of these (nucleotide and amino acids) are monomers, so that limits the answer choices. lipids are made of fatty acids and carbohydrates are made of monosaccharides.

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9
0
8.

Which are examples of carbohydrates?
- A.
  
  Starch, glucose, fructose
- B.
  
  Cellulose, glycogen, protease
- C.
  
  Cholesterol, wax, carcinogen
- D.
  
  Trypsin, lipase, testosterone
Correct Answer
A. Starch, glucose, fructose

Explanation
-ose is the classic suffix for a carbohydrate. starch is a polysaccharide made solely of glucose.

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11
0
9.

What is a function of lipids?
- A.
  
  Used as cell receptors, enzymes, and transport molecules in the human body.
- B.
  
  Used as the main energy source for plants.
- C.
  
  Stores hereditary information in bacteria.
- D.
  
  Used as insulation for marine arctic animals.
Correct Answer
D. Used as insulation for marine arctic animals.

Explanation
don't let the organism stuff at the end confuse you - that's just specific information used as examples. lipids provide insulation for organisms, no matter what kind they are. they also store energy but are not the main source of energy (this is carbohydrates).

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10
0
10.

Complete the analogy -lock : key :: enzyme : _________
- A.
  
  Substrate
- B.
  
  Active site
- C.
  
  Product
- D.
  
  Protein
Correct Answer
A. Substrate

Explanation
although "induced fit" is the best model now, the enzyme and substrate fit together like puzzle pieces, or like a lock and key. the enzyme is the lock, while the substrate is the key.

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8
0
11.

An enzyme __________ the activation energy needed to achieve a chemical reaction.
- A.
  
  Stabilizes
- B.
  
  Raises
- C.
  
  Lowers
- D.
  
  Eliminates
Correct Answer
C. Lowers

Explanation
enzymes reduce the amount of energy needed but there will always be some activation energy required.

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10
0
12.

An appropriate enzyme to catalyze a reaction involving the imaginary substance camelsine would be ______________.
- A.
  
  Camelose
- B.
  
  Cameline
- C.
  
  Camelise
- D.
  
  Camelase
Correct Answer
D. Camelase

Explanation
enzymes are typically named after the substrate on which they act, and they typically end in -ase.

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8
0
13.

If you wanted to increase the rate of an enzyme-catalyzed reaction, what would you do?
- A.
  
  Decrease the amount of substrate by one-third
- B.
  
  Increase the pH by 4 levels on the pH scale
- C.
  
  Decrease the amount of enzyme by half
- D.
  
  Increase the temperature by 10 C
Correct Answer
D. Increase the temperature by 10 C

Explanation
increasing the temperature will make the molecules move faster, thus increasing the number of collisions between substrate and enzyme. all the other three decrease rate: reducing the amount of substrate or enzyme reduces chances of a collision, while changing the pH more than 1 number will most likely cause the enzyme to denature.

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12
4

An Informative Quiz On Basic Biochemistry

Which one is odd here?

This represents what biomacromolecules?

Which would NOT be a correct match?

If you wanted to get a lot of quick energy before a soccer match, which biomacromolecules would your body need to break down?

A feature of nucleic acids not found in lipids is:

Unlike saturated fatty acids, unsaturated fatty acids contain what kind of bonds between carbon atoms?

A biomacromolecule which consists of a polymer of fatty acids is a

Which are examples of carbohydrates?

What is a function of lipids?

Complete the analogy -lock : key :: enzyme : _________

An enzyme __________ the activation energy needed to achieve a chemical reaction.

An appropriate enzyme to catalyze a reaction involving the imaginary substance camelsine would be ______________.

If you wanted to increase the rate of an enzyme-catalyzed reaction, what would you do?