Chapter 9

Which elements are abundantly found in living organism with comparison to earth's crust? (a) Carbon (b) Hydrogen (c) Oxygen (d) All of these

To analyse the chemical composition of living tissue we solubilize them in (a) \(\mathrm{HNO}_{3}\) (b) \(\mathrm{HCl}\) (c) \(\mathrm{CF}_{3} \mathrm{COOH}\) (d) \(\mathrm{CCI}_{3} \mathrm{COOH}\)

The percentage of oxygen in human body is (a) \(65 \%\) (b) \(46.6 \%\) (c) \(18.5 \%\) (d) \(3.3 \%\)

Chemical analysis of living tissue (Vegetable or piece of liver \(+\mathrm{CCl}_{3} \mathrm{COOH}\) ) Acid soluble pool (Filterate) \(\quad\) Acid insoluble pool (retentate) 1\. mol. wt (a) 1\. It contain 4 type of organic compound a. Protein b. Polysaccharides C. d. Fill in the blanks in (1) and (2) in the above flowchart. (a) \(\mathrm{a} \rightarrow\) greater than 1000 Dalton \(\mathrm{b} \rightarrow\) Nucleotide (b) \(\mathrm{a} \rightarrow 18-800 \mathrm{Da}\) \(\mathrm{b} \rightarrow\) Nucleic acid (c) \(\mathrm{a} \rightarrow\) greater than \(10,000 \mathrm{Da}\) \(\mathrm{b} \rightarrow\) Oligosaccharides (d) \(\mathrm{a} \rightarrow\) greater than 1000 Dalton \(\mathrm{b} \rightarrow\) Nucleoside

All the carbon compounds that we get from the living tissues can be called (a) Bioresource (b) Bioinformatics (c) Biowar (d) Biomolecules

Select the incorrect compounds that we get from living tissues can be called: (a) Elemental analysis of living tissues gives elemental composition of living tissue. (b) Analysis of chemical compound of living tissue gives idea of organic and inorganic constituent of living tissue. (c) Weight of small amount of living fresh tissue is known as wet weight. (d) Acid soluble pool contain lipids, nucleic acid, polysaccharide only.

The biomolecule whose weight is less than dalton (Da) is referred to as biomicromolecule. (a) 800 (b) 18 (c) 1000 (d) 10,000

Which of the following is not a macromolecule? (a) Nucleic acid (b) Polysaccharides (c) Lipids (d) Proteins

Lipids are extracted with acid insoluble fraction because (a) Its molecular weight is less than \(800 \mathrm{Da}\) (b) It form vesicle or micelle which are not water soluble (c) It is a polymer (d) It is not a polymer

Select the incorrect matching for component percentage in living cell: (a) Water \(=70\) to \(90 \%\) (b) Proteins \(=10\) to \(15 \%\) (c) Carbohydrate \(-2 \%\) (d) Nucleic Acid \(-5\) to \(7 \%\)

Monomeric unit of cellulose is (a) Glucose (b) Fructose (c) Mannose (d) Ribose

Monomeric unit of inulin is (a) Glucose (b) Fructose (c) Mannose (d) Ribose

Which of the following is homopolysaccharide? (a) Cellulose (b) Inulin (c) Starch (d) All of these

Select the incorrect statement from the following: (a) Cellulose does not contain complex helices. (b) Cellulose does not give colour with \(\mathrm{I}_{2}\). (c) Cotton fibre, plant cell wall are made up of cellulose. (d) Cellulose is heteropolysaccharide.

Which of the following is amino-sugar? (a) Glucosamine (b) Galactosamine (c) Both (a) and (b) (d) None of these

Chitin is a (a) Homopolysaccharide (b) Heteropolysaccharide (c) Oligosaccharide (d) Monosaccharide

Chitin is present in (a) Exoskeleton of arthropods (b) Cell wall of fungus (c) Setae of earthworm (d) All of these

In glycogen, which kind of linkage is found between adjacent glucose molecule? (a) 1,4 (b) 1,6 (c) both (d) 1,2

Which of the following is incorrect about glycogen? (a) It is a stored form of glucose in animals. (b) In glycogen, the right end is reducing and the left end is non-reducing. (c) It is a branched polymer of glucose. (d) It is a stored form of glucose in plants.

The bond formed between two adjacent monosaccharide is (a) Peptide bond (b) Ester bond (c) Glycosidic bond (d) Ionic bond

Blood concentration of glucose in normal healthy individual is (a) 2-3 mM (b) \(4.5-5 \mathrm{mM}\) (c) \(6-7 \mathrm{mM}\) (d) \(1 \mathrm{mM}\)

Which of the following is a stored form of energy in plant? (a) Starch (b) Cellulose (c) Glycogen (d) Chitin

Lipids are (a) Compounds of carbon, hydrogen and oxygen (b) Compounds of glycerol and fatty acid (c) Insoluble in water (d) All of these

Lipids may be (a) Fatty acid (b) Glycerol (c) Compound respectively of both (d) All of these

What is the number of carbon atoms which the palmitic and arachidonic acid contain (including carboxyl carbon)? (a) 16,19 (b) 15,19 (c) 16,20 (d) 18,20

Fats or oils are (a) Monoglycerides (b) Diglycerides (c) Triglycerides (d) Any of the above

Which of following is an example of phospholipid? (a) Palmitic acid (b) Arachidonic acid (c) Lecithin (d) Glycerol

Which of the following is correct about lipids? (a) On the basis on melting points they are divided into fats and oils. (b) Neural tissues are made up of simple lipids only. (c) Phospholipids never forms a part of cell membrane. (d) Lipids are strictly macromolecule.

Select the incorrect matching regarding the following diagram: (a) Purine Its metabolism forms uric acid (b) Uracil \(-\) It is exclusively found in RNA only (c) Adenylic acid \(-\) Monomer of both RNA and DNA (d) Cholesterol \(-\) Forms a part of cell membrane

Which of the following is correct about amino acid? (a) It is a compound containing amino and acidic group \((-\mathrm{COOH})\). (b) It is a substitute and is methane. (c) It is based on the nature of ' \(\mathrm{R}\) ' group they are of many types. (d) All the above

How many amino-acids are used to form protein? (a) 18 (b) 20 (c) 21 (d) 22

NC(O)C(=O)O is a structure of \(\alpha\) -amino acid. Based on different \(\mathbb{R}\) groups the following amino acids are formed. Select the correct amino acid according to different \(\mathbb{R}\) group. (a) \(\mathrm{R} \rightarrow \mathrm{H}\) (glycine), (b) \(\mathrm{R} \rightarrow \mathrm{CH}_{3}\) (alanine), (c) \(\mathrm{R} \rightarrow \mathrm{CH}_{2} \mathrm{OH}\) (serine) (d) All the above

The chemical and physical property of amino acid is based on (a) \(-\mathrm{NH}_{2}\) group (b) \(-\) COOH group (c) \(-\mathrm{R}\) group (d) All of these

Match the column: Column I Column II A. Acidic 1\. Valine B. Basic 2\. Lysine C. Neural 3\. Glutamic acid D. Aromatic 4\. Tyrosine, phenylalanine, tryptophan (a) \(\mathrm{A}-3, \mathrm{~B}-2, \mathrm{C}-1, \mathrm{D}-4\) (b) \(\mathrm{A}-2, \mathrm{~B}-3, \mathrm{C}-4, \mathrm{D}-1\) (c) \(\mathrm{A}-4, \mathrm{~B}-1, \mathrm{C}-2, \mathrm{D}-3\) (d) A-1, B-2, C-2, D - -

Protein is (a) Homopolymer (b) Heteropolymer (c) Polypeptide (d) Both (b) and (c)

Essential amino acids are those which are (a) Not synthesized by our body (b) Not required by our body (c) Synthesized by our body (d) Only used to form proteins

The most abundant protein in animal world is (a) RuBisCO (b) Collagen (c) Elastin (d) Albumin

The most abundant protein in whole biosphere is (a) \(\mathrm{RuBisCO}\) (b) Collagen (c) Elastin (d) Albumin

Protein acts as a (a) Enzyme (b) Receptor (c) Antibody (d) All of these

Match the column: Column I Column II A. Collagen 1\. Hormone B. Trypsin 2\. Enzyme C. Insulin - 3\. Fight Infectious agent D. Receptor - 4\. Enable glucose transport into cells E. GLUT-4 - 5\. Sensory reception (smell, taste hormone) F. Antibody 6\. Intercellular ground substance (a) \(\mathrm{A}-3, \mathrm{~B}-2, \mathrm{C}-4, \mathrm{D}-1, \mathrm{E}-6, \mathrm{~F}-5\) (b) \(\mathrm{A}-6, \mathrm{~B}-2, \mathrm{C}-1, \mathrm{D}-5, \mathrm{E}-4, \mathrm{~F}-3\) (c) \(\mathrm{A}-1, \mathrm{~B}-4, \mathrm{C}-2, \mathrm{D}-5, \mathrm{E}-3, \mathrm{~F}-6\) (d) A-2, B - 4, C-5, D-3, E-1, F-6

The macromolecular fraction is comprised by which of the following? (a) Polynucleotides (b) Polypeptides (c) Polysaccharides (d) All of these

Protein is described by biologists at levels. (a) 1 (b) 2 (c) 3 (d) 4

Sequence or positional information of amino acid is given by the (a) \(2^{\circ}\) structure (b) \(1^{\circ}\) structure (c) Tertiary structure (d) Quaternary structure

In the primary structure of protein (a) Left end represents \(\rightarrow\) 1st amino acid (C-terminal amino acid) (b) Right end represents \(\rightarrow\) Last amino acid (N terminal amino acid) (c) Left end represents \(\rightarrow\) lst amino acid (N-terminal amino acid) (d) Right end represents \(\rightarrow\) 1st amino acid (C-terminal amino acid)

Which of the following is correct about secondary structure? (a) Helix is a primary structure. (b) In proteins only left handed helices are observed. (c) In proteins only right handed helices are observed. (d) None of these

When an assembly of more than one polypeptide occurs then it is known as structure of protein. (a) \(1^{\circ}\) (b) \(2^{\circ}\) (c) \(3^{\circ}\) (d) \(4^{\circ}\)

Which of the following is correct about human Haemoglobin (Hb)? (a) Made up to \(2-\alpha\) and \(2-\beta\) subunits (b) Present in \(\mathrm{RBC}\) (c) Use to carry \(\mathrm{O}_{2}\) and \(\mathrm{CO}\), (d) All of these

Select the incorrect statement from the following: (a) Most of the enzymes are protein. (b) 'Hb' is an example of quaternary structure of protein. (c) In the primary structure of protein, the left hand is N-terminal and the right hand is C-terminal. (d) In protein or polypeptide, the amino acids are linked by glycosidic bond.

Which of the following possess heterocyclic ring? (a) Adenine (b) Guanine and Cytosine (c) Thymine and Uracil (d) All of these

Identify the nucleoside from the following: A. Adenosine B. Uridylic acid C. Uridine D. Cytidylic acid (a) A and B only (b) A and C only (c) C and D only (d) \(\mathrm{B}\) and \(\mathrm{C}\) only