Biomolecules Test

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Biomolecules Test - 50

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Weekly Quiz Competition

Question 1
1 / -0

HIV has a protein coat and genetic material, which is

A
ssRNA

B
dsRNA

C
ssDNA

D
dsDNA

Solution

HIV (Human Immunodeficiency Virus) has a viral envelope, matrix proteins and core. The viral envelope consists of two layers of lipids with embedded proteins. Matrix proteins are present between envelope and core. The viral core consists of two single strands of RNA for its genome. It is a retrovirus which synthesizes a DNA copy (cDNA) of its genomic RNA. Thus, the correct answer is option A.
Question 2
1 / -0

RNA is not found in

A
Cytoplasm

B
Nucleus

C
Cell sap

D
All of the above

Solution

Cell sap is the liquid contained within a plant cell vacuole. it do not have any RNA in it. Nucleus have mRNA during the process of transcription. Cytoplasm also have RNA.
Question 3
1 / -0

Which one of the following reactions is catalyzed by the enzyme reverse transcriptase?

A
Transfer of information from RNA to RNA

B
Transfer of information from DNA to RNA

C
Transfer of information from Protein to DNA

D
Transfer of information from RNA to DNA

Solution

A reverse transcriptase is an enzyme used to generate complementary DNA (cDNA) form an RNA template by the process of reverse transcription.
In other words, the synthesis of DNA from an RNA template to produce the complementary DNA uses the enzyme reverse transcriptase.
Thus, the correct answer is option (D).
Question 4
1 / -0

Which of the following is a structural protein in animals?

A
Glycogen

B
Chitin

C
Keratin

D
Pectin

Solution

The polysaccharide that serves to supply stiffness to an organism is structural polysaccharide.
Glycogen is a storage polysaccharide.
Chitin is a structural polysaccharide in fungi.
Keratin is a fibrous structural protein in animals. It protects the epithelial cells from damage or stress.
Pectin is a structural heterpolysaccharide contained in the primary cell walls of plants.
Thus, the correct answer is option C.
Question 5
1 / -0

Which element is present in Nucleic acids?

A
Potassium

B
Sulphur

C
Nitrogen

D
All of the above

Solution

Nitrogen is one of the essential constituents of all living organisms. It is present in Nucleic Acids (Nitrogen bases).
Question 6
1 / -0

Find the odd one out.

A
Meat

B
Fish

C
Eggs

D
Cheese
Solution
Correct Option: D
Explanation:
- Meat, fish and eggs are natural sources of proteins.
- Proteins help in the growth of body and in the repair of body cells.
- Cheese is a major source of fats that is prepared after the sequential processing of milk.
  Hence, the odd one out is Cheese.
Question 7
1 / -0

Na, Ca, urea, pectin and K

A
Na,urea and pectin are organic rest all are inorganic

B
Na,Ca,K and urea are inorganic rest all are organic

C
Ca,Na,K are inorganic rest are organic

D
All are inorganic

Solution

Hydrocarbon compounds are considered to be organic nutrients. Urea is an organic compound found in animal body as waste product where as Pectin is an organic compound found in cell wall of plants. Electrolytes are found in animal blood and sap of plants.
Question 8
1 / -0

Which one of the following structural formula of two organic compounds is correctly identified along with its related function?

A
B- uracil a component of DNA

B
A- triglyceride major source of energy

C
A- lecithin a component of cell membrane

D
B- adenine a nucleotide that makes up nucleic acid

Solution

Lecithins are usually phospholipids, composed of phosphoric acid with choline, glycerol or other fatty acids usually glycolipids or triglyceride. Lecithin is also a dietary source of several active compounds, choline and it's metabolites are needed for several physiological purposes, including cell membrane signaling and cholinergic neurotransmission. Phosphatidylcholine occurs in all cellular organisms, being one of the major components of the phospholipid portion of the cell membrane.
Question 9
1 / -0

Molecular scissors which cut DNA at specific site is known as

A
Pectinase

B
Polymerase

C
Restriction endonuclease

D
Ligase

Solution

A restriction enzyme or restriction endonuclease or molecular scissors is an enzyme used in genetic engineering that splices DNA at or near specific recognition nucleotide sequences, known as restriction sites. Thus, the correct answer is option C.
Question 10
1 / -0

The lactase hydrolyzes lactose into

A
Glucose

B
Glucose and galactose

C
Fructose

D
Glucose and fructose
Solution
- Lactose $$\rightarrow$$ Glucose + Galactose
- Lactose is a disaccharide which, hydrolyzes into glucose and galactose by breaking of glycosidic bonds.
- It is a prominent sugar, present in milk which is metabolized in the intestine.
Hence, the correct answer is B.

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Biomolecules Test - 50

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Biomolecules Test - 50

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SHARING IS CARING

Question 1

ssRNA

dsRNA

ssDNA

dsDNA

Solution

Question 2

Cytoplasm

Nucleus

Cell sap

All of the above

Solution

Question 3

Transfer of information from RNA to RNA

Transfer of information from DNA to RNA

Transfer of information from Protein to DNA

Transfer of information from RNA to DNA

Solution

Question 4

Glycogen

Chitin

Keratin

Pectin

Solution

Question 5

Potassium

Sulphur

Nitrogen

All of the above

Solution

Question 6

Meat

Fish

Eggs

Cheese

Solution

Question 7

Na,urea and pectin are organic rest all are inorganic

Na,Ca,K and urea are inorganic rest all are organic

Ca,Na,K are inorganic rest are organic

All are inorganic

Solution

Question 8

B- uracil a component of DNA

A- triglyceride major source of energy

A- lecithin a component of cell membrane

B- adenine a nucleotide that makes up nucleic acid

Solution

Question 9

Pectinase

Polymerase

Restriction endonuclease

Ligase

Solution

Question 10

Glucose

Glucose and galactose

Fructose

Glucose and fructose

Solution

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