Biomolecules Test

Result

Biomolecules Test - 76

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

______ are to proteins as ______ are to nucleic acids

A
Sugars; lipids

B
Amino acids; hydrogen bonds

C
Sugars, proteins

D
Amino acids, nucleotides

Solution

Amino acids are to proteins as nucleotides are to nucleic acids.
Amino acids are the monomers of the polypeptide chain that are synthesised during the translation process from the mRNA. The basic structure of all the amino acids is the same. They contain a carbon atom at the middle and three chemical bases along with a differing R group,
Nucleotides are the monomers of the nucleic acid. They are composed of three parts namely sugar molecule, nitrogenous bases and a phosphate molecule.
So, the correct option is 'Amino acids, nucleotides'
Question 2
1 / -0

A peptide bond is found in which type of biological molecule

A
Carbohydrate

B
Lipid

C
Nucleic acid

D
Protein

Solution

A peptide bond is found in proteins between two amino acids.
A. Carbohydrates possess glycosidic linkages between two monosaccharides.
B. Lipids possess ester bonds which are covalent in nature formed during condensation reactions.
C. Nucleic acids possess phosphodiester bonds that is present between carbon atoms of adjacent sugar molecules in DNA and RNA.
Hence, the correct answer is 'Protein'.
Question 3
1 / -0

The structure of a protein is determined by

A
Electrostatic bonding

B
Amino acid sequence

C
Amino acid composition

D
Hydrophobic bonding

Solution

The amino acid sequence determines the protein sequence. The triplet codons formed in the mRNA helps in deciding the sequence of the amino acid to be attached. A long chain of amino acid sequence forms the protein.
A single change in any amino acid changes the nature of the protein. Mutations in genetic material like insertion, deletion, inversion, translocation, etc also cause a change in the amino acid sequence. Electrostatic and hydrophobic bonding helps in the formation of the protein structure.
Hence, the correct answer is 'Amino acid sequence'
Question 4
1 / -0

Choose the correct answers from the alternatives given :
An exergonic reaction is

A
a spontaneous reaction in which energy is given off

B
an uphill reaction requiring input of energy

C
an anaerobic reaction

D
an oxidation reaction

Solution

An exergonic reaction is a process in which energy is released in the form of heat because of the breakage of bonds. They are also called catabolic reactions in which complex substances are broken down into simpler ones. They mostly occur spontaneously but few reactions are there which may occur non-spontaneously. As the reactants lose energy, Gibbs free energy will become negative.
So, the correct option is ' a spontaneous reaction in which energy is given off'.
Question 5
1 / -0

Choose the correct answers from the alternatives given .
All the biochemical pathways in a cell constitute

A
Coupling reactions

B
Endergonic reactions only

C
Exergonic reactions only

D
Metabolism

Solution

There are various biochemical reactions taking inside a cell. Some of these reactions may result in absorption of energy (called as endergonic reactions) or release of energy (called as exergonic reactions). Often both these types of reactions are coupled, to get the energy to those endergonic reactions, they are paired up with energy-releasing exergonic reactions (known as coupling reactions). Although, there are a wide variety of reactions taking place inside the body apart from these reactions. Metabolism is a term that is used to describe all these biochemical reactions involved in maintaining the living state of the cells and the organism.
So, the correct option is 'Metabolism'.
Question 6
1 / -0

Choose the correct answers from the alternatives given .
All the chemical energy transformations that occur within a cell is called

A
metabolism

B
adaptation

C
homeostasis

D
photosynthesis

Solution

Metabolism is the set of life-sustaining chemical processes that enable organisms to transform the chemical energy stored in molecules into energy that can be used for cellular processes.
So, the correct option is 'metabolism'
Question 7
1 / -0

Nucleic acid was first discovered in pus cells in

A
1869

B
1912

C
1931

D
1953

Solution

Nucleic acids are biopolymers or small biomolecules essentially to all known forms of life. They are composed of nucleotides which are the monomers made of three components: a 5 carbon sugar, a phosphate group, and a nitrogenous base. Nuclein was discovered by Friedrich Miescher in 1869.
So, the correct option in '1869'.
Question 8
1 / -0

Take a living tissue, grind it in trichloroacetic acid using pestle and mortar, and then strain it, you would obtain two fractions: acid-soluble and acid-insoluble fraction. Acid-insoluble fraction does not contain

A
polysaccharides

B
nucleic acids

C
lipids

D
flavonoids and alkaloids.

Solution

The acid-soluble pool represents roughly the cytoplasmic composition whereas the macromolecules from cytoplasm and organelles become the acid-insoluble fraction. Together they represent the entire chemical composition of living tissues or organisms. Al! the compounds which are found in the add-soluble pool, have their molecular weights ranging from approx. 18 to around 800 daltons (Da).
The acid-insoluble fraction, has only four types of organic compounds i.e., proteins, nucleic acids, polysaccharides and lipid.
So, the correct answer is 'Flavinoids and alkaloids'.
Question 9
1 / -0

Select the correct option:
Triglycerides are fatty acid esters of glycerol, which are formed by the esterification of__________ molecule(s) of fatty acids with _____ molecule(s) of glycerol.

A
one, two

B
one, three

C
three, one

D
two, one

Solution

The three hydroxyl groups of a glycerol molecule join with the carboxyl group of three fatty acid molecules to form a fat or triglyceride molecule. The chemical linkage between the glycerol and fatty acids is called the ester bonds.It results from the elimination of three molecular of water (condensation or dehydration ).
Question 10
1 / -0

Match column I with column II and select the correct option from the given codes.
Sr. no List I Sr. no List II
A. Galactose i. Protine
B. Anticoagulant ii. Phospholipid
C. Fructose iii. Brain Sugar
D. Lecithin iv. Heparin
E. Insulin v. Fruit sugar

A
A-(v);B-(iii);C-(ii);D-(i);E-(iv)

B
A-(v);B-(iii);C-(i);D-(iv);E-(ii)

C
A-(i);B-(ii);C-(iii);D-(v);E-(iv)

D
A-(iii);B-(iv);C-(v);D-(ii);E-(i)

Solution

Galactose is a monosaccharide which is also known as brain sugar. It is an important constituent of glycoprotein and glycolipids.
Anticoagulant is the substance that prevents coagulation of the blood cells and it is heparin which is obtained from leeches.
Fructose is important monosaccharide which is found in fruit juices and honey. It is the sweetest carbohydrate.
Lecithin is a phospholipid. Phospholipids are amphoteric molecules and contain phosphoric acid. Phospholipid help in transport, metabolism and permeability of the cell membrane.
Insulin is a protein which is made up of amino acids.
So, the correct option is 'A-(iii);B-(iv);C-(v);D-(ii);E-(i)'

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sr. no	List I	Sr. no	List II
A.	Galactose	i.	Protine
B.	Anticoagulant	ii.	Phospholipid
C.	Fructose	iii.	Brain Sugar
D.	Lecithin	iv.	Heparin
E.	Insulin	v.	Fruit sugar

Biomolecules Test - 76

Result

Biomolecules Test - 76

Score

-

Rank

-

SHARING IS CARING

Question 1

Sugars; lipids

Amino acids; hydrogen bonds

Sugars, proteins

Amino acids, nucleotides

Solution

Question 2

Carbohydrate

Lipid

Nucleic acid

Protein

Solution

Question 3

Electrostatic bonding

Amino acid sequence

Amino acid composition

Hydrophobic bonding

Solution

Question 4

a spontaneous reaction in which energy is given off

an uphill reaction requiring input of energy

an anaerobic reaction

an oxidation reaction

Solution

Question 5

Coupling reactions

Endergonic reactions only

Exergonic reactions only

Metabolism

Solution

Question 6

metabolism

adaptation

homeostasis

photosynthesis

Solution

Question 7

1869

1912

1931

1953

Solution

Question 8

polysaccharides

nucleic acids

lipids

flavonoids and alkaloids.

Solution

Question 9

one, two

one, three

three, one

two, one

Solution

Question 10

A-(v);B-(iii);C-(ii);D-(i);E-(iv)

A-(v);B-(iii);C-(i);D-(iv);E-(ii)

A-(i);B-(ii);C-(iii);D-(v);E-(iv)

A-(iii);B-(iv);C-(v);D-(ii);E-(i)

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.