Practice Biochemistry Multiple Choice Questions with Answers Quiz-1

Q.1.

What is a catalyst?

Process that changes one set of chemicals into another
Element or compound that enters into a chemical reaction
Element or compound produced by a chemical reaction
Substance that speeds up the rate of the chemical reaction

Q.2.

Which is the strongest acid?

ph of 1
ph of 4
ph of 7
ph of 9

Q.3.

Enzymes are

nucleic acids
proteins
lipids
carbohydrates

Q.4.

Which of the following is correctly matched?

Proteins-nucleotides
Lipids-glycerol
Carbohydrates-amino acids
DNA-glucose
None of the above

Q.5.

What is the function of a protein?

It is involved in short-term energy store.
It is involved in almost every function of the human body.
It transmits genetic information.
It is involved in long-term energy and body insulation.

Q.6.

What is a substrate?

The molecules that binds to the enzyme at the active site, and causes the enzyme to carry out a task.
The molecule that does not fit into an enzyme, and has no effect on the enzyme.
The molecule that binds to a place other than the active site, and caused the enzyme to carry out a task.
A water molecule that breaks down monomers.

Q.7.

Monomer of a protein

nucleotide
lipid
monosaccharide
amino acid

Q.8.

DNA contain

Ribose sugar
Deoxy Ribose sugar
Arabinose
Any sugar

Q.9.

Examples of nucleic acids?

DNA and RNA
carbohydrates
potatoes
meats

Q.10.

Which is the strongest base?

ph of 1
ph of 4
ph of 7
ph of 9

Q.11.

Animals store carbohydrates as _______________ while plants store carbohydrates as ______________.

glycogen, starch
sugar, starch
starch, glucose
glycogen, glucose

Q.12.

Amino acids are the monomers of

Carbohydrates
Lipids
Proteins
Nucleic Acids

Q.13.

How many atoms are there TOTAL in:H2SO4

6
5
7
3

Q.14.

Which organic molecule is paired with its function?

nucleic acid : to store energy
proteins : to provide insulation
lipids : to regulate metabolic processes
carbohydrate : to provide quick–release energy

Q.15.

How many valence electrons are present in Carbon?

6
4
3
8

Q.16.

How many calories per gram do lipids contain?

9 cal/g
0 cal/g
4 cal/g
7 cal/g

Q.17.

How many calories per gram do carbohydrates contain?

4 cal/g
0 cal/g
9 cal/g
10 cal/g

Q.18.

The element _______is found in all of the organic compounds.

Iron
Nitrogen
Carbon
Oxygen

Q.19.

What is the function of a nucleic acid?

it transmits genetic information.
It is involved in body insulation.
It provides your body with the energy it needs.
It is involved in energy storage.

Q.20.

What is the function of nucleic acids?

store genetic information
store energy (long-term)
store energy (short-term)
build skin, hair, nails, muscles

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