Biomolecules Test 2

Total Questions:50 Total Time: 60 Min

Remaining:

 

Questions 1 of 50

Question:Which of the following is a carbohydrate

Answers Choices:

Leucine

Albumin

Inulin

Maltase

Questions 2 of 50

Question:General formula for carbohydrates is

Answers Choices:

\({C_n}{H_{2n}}{O_{2n + 2}}\)

\({C_x}{({H_2}O)_{2x}}\)

\({C_x}{({H_2}O)_y}\)

None of these

Questions 3 of 50

Question:Benedict solution provides

Answers Choices:

\(A{g^ + }\)

\(L{i^ + }\)

\(C{u^{ + 2}}\)

\(B{a^{ + 2}}\)

Questions 4 of 50

Question:Molecular formula of pentahydroxy acid obtained when glucose is oxidised with \(B{r_2}\) water is

Answers Choices:

\({C_6}{H_{12}}{O_7}\)

\({C_6}{H_{12}}{O_8}\)

\({C_6}{H_{12}}{O_6}\)

\({C_6}{H_{10}}{O_6}\)

Questions 5 of 50

Question:The 'phosphoglycerides' occur in

Answers Choices:

The brain and the spinal chord

Nails and hairs

Oils and fats

Waxes

Questions 6 of 50

Question:Sucrose is a

Answers Choices:

Monosaccharide

Disaccharide

Trisaccharide

Polysaccharide

Questions 7 of 50

Question:Which one of the following compounds is found abundantly in nature

Answers Choices:

Fructose

Starch

Glucose

Cellulose

Questions 8 of 50

Question:The substance that forms the plant cell walls is or Which carbohydrates is an essential constituents of plant cells

Answers Choices:

Cellulose

Sucrose

Vitamins

Starch

Questions 9 of 50

Question:Sugar can be tested in urine by

Answers Choices:

Molisch test

Dunstan's test

Benedict's test

Legal's test

Questions 10 of 50

Question:Sucrose on hydrolysis gives

Answers Choices:

Two molecules of glucose

Two molecules of fructose

One molecule each of glucose and fructose

One molecule each of glucose and mannose

Questions 11 of 50

Question:Which of the following is a disaccharide

Answers Choices:

Lactose

Starch

Cellulose

Glucose

Questions 12 of 50

Question:Glucose cannot be classified as

Answers Choices:

A hexose

A carbohydrate

An oligosaccharide

An aldose

Questions 13 of 50

Question:Osazone formation involves only 2 carbon atoms of glucose because of

Answers Choices:

Chelation

Oxidation

Reduction

Hydrolysis

Questions 14 of 50

Question:Glucose will show mutarotation when solvent is

Answers Choices:

Acidic

Basic

Neutral

Amphoteric

Questions 15 of 50

Question:Which of the following pentoses will be optically active \(\begin{array}{*{20}{c}} {CHO} \\ | \\ {HCOH} \\ | \\ {HOCH} \\ | \\ {HCOH} \\ | \\ {C{H_2}OH} \\ I \\\end{array}\)\(\begin{array}{*{20}{c}} {CHO} \\ | \\ {HCOH} \\ | \\ {HCOH} \\ | \\ {HOCH} \\ | \\ {C{H_2}OH} \\ {II} \\\end{array}\)\(\begin{array}{*{20}{c}} {CHO} \\ | \\ {HCOH} \\ | \\ {HCOH} \\ | \\ {HCOH} \\ | \\ {C{H_2}OH} \\ {III} \\\end{array}\)

Answers Choices:

All

II and III

I

II

Questions 16 of 50

Question:\(\alpha - D - \)glucose and \(\beta - D - \)glucose differ from each other due to difference in one of the carbons with respect to its

Answers Choices:

Size of hemiacetal ring

Number of OH groups

Configuration

Conformation

Questions 17 of 50

Question:In the viscose process the solvent for cellulose consists of

Answers Choices:

Ether and alcohol

Copper sulphate and ammonia

Sodium hydroxide and carbon disulphide

Acetic acid and acetic anhydride

Questions 18 of 50

Question:Which of the following does not reduce Benedict's solution

Answers Choices:

Sucrose

Aldehyde

Glucose

Fructose

Questions 19 of 50

Question:Which of the following is a disaccharide

Answers Choices:

Glucose

Ribulose

Lactose

Arabinose

Questions 20 of 50

Question:On heating glucose with Fehling's solution we get a precipitate whose colour is

Answers Choices:

Yellow

Red

Black

White

Questions 21 of 50

Question:Which is false

Answers Choices:

Glucose is a disaccharide

Starch is a polysaccharide

Glucose and fructose are not anomers

Invert sugar consists of glucose and fructose

Questions 22 of 50

Question:Insulin is

Answers Choices:

An amino acid

Protein

A carbohydrate

A lipid

Questions 23 of 50

Question:Pepsin enzyme hydrolyses

Answers Choices:

Proteins to amino acids

Fats to fatty acids

Glucose to ethyl alcohol

Polysaccharides to monosaccharides

Questions 24 of 50

Question:Which one of the following proteins transports oxygen in the blood stream

Answers Choices:

Myoglobin

Insulin

Albumin

Haemoglobin

Questions 25 of 50

Question:Out of the following the best category of proteins is

Answers Choices:

Polyamides

Polythioethers

Glycerides

Polysaccharides

Questions 26 of 50

Question:The molecular weight of protein is

Answers Choices:

< 10000

> 10000

> 1000

> 1000 and < 10000

Questions 27 of 50

Question:Enzymes belong to which class of compounds

Answers Choices:

Polysaccharides

Polypeptides

Polynitrogen heterocyclic compounds

Hydrocarbons

Questions 28 of 50

Question:By the action of enzymes, the rate of biochemical reaction

Answers Choices:

Decreases

Increases

Does not change

Either or

Questions 29 of 50

Question:Metal present in blood is

Answers Choices:

Al

Mg

Cu

Fe

Questions 30 of 50

Question:The number of essential amino acids in man is

Answers Choices:

8

10

18

20

Questions 31 of 50

Question:Pick out wrong combination

Answers Choices:

\(F{e^{ + 2}} \to \) Haemoglobin

\(M{g^{2 + }} \to \) Photosynthesis

\(S{e^{2 + }} \to \) Kreb Cycle

\(C{O^{ + 2}} \to \) Vitamin B-12

Questions 32 of 50

Question:The decomposition of complex organic compounds into simpler compound with the help of enzyme is known as

Answers Choices:

Catabolism

Anabolism

Fermentation

Metabolism

Questions 33 of 50

Question:Chlorophyll contains

Answers Choices:

\(Fe\)

\(Na\)

\(Mg\)

\(Zn\)

Questions 34 of 50

Question:Which one of the following biomolecules is insoluble in water

Answers Choices:

\(\alpha \)- Keratin

Haemoglobin

Ribonuclease

Adenine

Questions 35 of 50

Question:A nanopeptide contains …….. peptide linkages

Answers Choices:

10

8

9

18

Questions 36 of 50

Question:The correct statement in respect of protein haemoglobin is that it

Answers Choices:

Acts as an oxygen carrier in the blood

Forms antibodies and offers resistance to diseases

Functions as a catalyst for biological reactions

Maintains blood sugar level

Questions 37 of 50

Question:Identify the correct statement regarding enzymes

Answers Choices:

Enzymes are specific biological catalysts that cannot be poisoned

Enzymes are normally heterogeneous catalysts that are very specific in their action

Enzymes are specific biological catalysts that can normally function at very high temperature (T ~ 1000K)

Enzymes are specific biological catalysts that possess well-defined active sites

Questions 38 of 50

Question:The most important food reserves of animals and plants are

Answers Choices:

Carbohydrates

Proteins

Vitamins

Fats

Questions 39 of 50

Question:Which of the following gives maximum energy in metabolic processes

Answers Choices:

Proteins

Carbohydrates

Lipids

Vitamins

Questions 40 of 50

Question:The energy change produced by the combustion of food is called the 'calorific value'. The highest calorific value is given by

Answers Choices:

Proteins

Fats

Carbohydrates

Vitamins

Questions 41 of 50

Question:An example for a saturated fatty acid, present in nature is

Answers Choices:

Oleic acid

linoleic acid

Linolenic acid

Palmitic acid

Questions 42 of 50

Question:A nucleotide consists of

Answers Choices:

Base and sugar

Base and phosphate

Sugar and phosphate

Base, sugar and phosphate

Questions 43 of 50

Question:Which of the following is responsible for heredity character

Answers Choices:

DNA

RNA

Proteins

Hormones

Questions 44 of 50

Question:The segment of DNA which acts as the instructional manual for the synthesis of the protein is

Answers Choices:

Nucleoside

Nucleotide

Ribose

Gene

Questions 45 of 50

Question:The double helical structure of DNA was proposed by

Answers Choices:

Watson and Crick

Meicher

Emil Fischer

Khorana

Questions 46 of 50

Question:A segment of DNA molecule which codes or specifies for one polypeptide chain is called

Answers Choices:

Phosphate group

Adenine

Gene

Amino acid

Questions 47 of 50

Question:Purine derivative among the following bases is

Answers Choices:

Guanine

Cytosine

Thymine

Uracil

Questions 48 of 50

Question:RNA is different from DNA because RNA contains

Answers Choices:

Ribose sugar and thymine

Ribose sugar and uracil

Deoxyribose sugar and thymine

Deoxyribose sugar and uracil

Questions 49 of 50

Question:Deficiency of which vitamin causes rickets

Answers Choices:

Vitamin-D

Vitamin-B

Vitamin-A

Vitamin-K