Biology/CELL STRUCTURES AND FUNCTION Sample Test,Sample questions

Question: ) Which is not a trait of enzymes? ...

1.Proteinaceous nature

2.Specific in nature

3.Speed up ate of biochemical reaction

4.Used up in reaction


Question: A fatty acid not synthesised in human body i

1.Cholesterol

2.Linoleic acid

3.Glycerol

4.None of the above


Question: A nucleotide is ...

1.Sugar + Phosphate

2.Base + Sugar + Phosphate

3.base + Sugar - OH

4.(Base + Sugar+Phosphate)n


Question: A storage protein is ...

1.Keratin

2.Collagen

3.Haemoglobin

4.Glutelin/Globulin


Question: All enzymes are proteins". This statement is now modified because of exception to this

1.Arylsulphate

2.Ribozyme

3.Nitroreductase

4.Dehydrogenase


Question: Assembly of two subunits 40 S and 60 S of the ribosome is

1.100S unit

2.80S unit

3.70A unit

4.90S unit


Question: Bacterial cell wall is made up of

1.N-acetyl glucosamine

2.N-acetyl muramic acid

3.Both a and b

4.N-acetyl glucosamine, N-acetyl muramic acid and amino acids


Question: Base pairs present in one turn of DNA are

1.12

2.11

3.10

4.9


Question: Calcium is required for functioning of enzyme ...

1.Fumarase

2.ATP-ase

3.Succinate thiokinase

4.Isocitrate dehydrogenase


Question: Cell theory states

1.All cells are living

2.All cells have nucleus

3.Cells are fundamental structural unit of living organisms

4.Cell reproduce by mitosis and meiosis


Question: Cellulose is a polymer of D-glucose units joined by

1.β 1-6 linkage

2.β 1-4 linkage

3.α 1-6 linkage

4.α 1-4 linkage


Question: Chitin occurs in ...

1.Crab

2.caterpillar

3.Agaricus

4.All the above


Question: Chitinous cell wall is present in

1.Plant

2.Bacteria

3.Protists

4.Fungi


Question: Chlorzinc Iodide is used to stain

1.Cellulose

2.Lignin

3.Pectin

4.Hemicellulose


Question: Choose the correct statement

1.All proteins have 20 amino acids

2.Both ends of protein are similar

3.All proteins are soluble

4.Proteins are formed by peptide bonds


Question: Coenzyme is ....

1.Often a vitamin

2.Always an inorganic compound

3.Always a protein

4.Often a metal


Question: Coenzyme is often a ... ..

1.Carbohydrate

2.Protein

3.Vitmin

4.Fatty acid


Question: Cristae are

1.The membraneous infolding’s of the outer membrane of mitochondria

2.the jelly like central matrix of mitochondria

3.The membraneous infolding’s of the inner membrane of mitochondria

4.enzymes located on the inner mitochondrial membrane


Question: Destructive effect of high temperature on enzyme action is due to

1.Formation of linkage between apoenzyme and its cofactor

2.Acceleration of reverse reaction

3.Destructive of tertiary and quaternary structure of enzymes

4.All of these


Question: Detoxification of lipid soluble drugs and other harmful compounds in ER is carried out by cytochrome

1.C

2.a1-a2

3.b - f

4.P450


Question: Energy currency/coin of cell is ....

1.ATP

2.NAD

3.ADP

4.GDP


Question: Energy is stored in liver and muscles as ...

1.Fat

2.Protein

3.Glycogen

4.Glucose


Question: Enzyme are polymers of ...

1.Fatty acids

2.Amino acids

3.Hexose sugar

4.Inorganic phosphate


Question: Enzymes enhance rate of reaction by ...

1.Combining with product

2.Forming reactant product complex

3.Changing equilibrium of reaction

4.Lowering activation energy


Question: Enzymes having slightly different molecular structure but performing identical activity are ...

1.Homoenzymes

2.Isoenzymes

3.Apoenzymes

4.Coenzymes


Question: Experiments demonstrating the importance of the nucleus in controlling the growth of the cell was performed in

1.Neurospora

2.Star fish

3.Acetabularia

4.Leucocytes


Question: F0-F1 particles meant for ATP synthesis are present on

1.outer mitochondrial membrane attached to the cytosolic or C face

2.inner mitochondrial membrane attached to the Matrix or M face

3.inner mitochondrial membrane attached to the cytosolic or C face

4.outer mitochondrial membrane attached to the Matrix or M face


Question: Feedback inhibition is caused by blocking of enzymes by ... .

1.Accumulated end products

2.Chemicals produced by hormones

3.Hormones

4.Competitive inhibition


Question: Fine cytoplasmic connections between neighbouring cells through the cell wall for cell to cell communication is called

1.Plasmosome

2.Plasmodesmata

3.Mesosome

4.All of these


Question: Glucose is stored as glycogen in ...

1.Pancreas

2.Bone

3.Kidney

4.Liver


Question: Identify the non -membraneous organelle from the following

1.Nucleus

2. Chloroplasts

3.ER

4.Ribosomes


Question: In higher plants, the shape of the chloroplast is

1.Cup shaped

2.Girdle shaped

3.Ribbon shaped

4.Discoid


Question: In RER, ribosomes are located on

1.the cytoplasmic side

2.on the luminal side

3.all through out

4.Both A and B


Question: Living cell contains 60-75% water. Water present in human body is ...

1.60-65%

2.50-55%

3.75-80%

4.65-70%


Question: Match the column ... .... [ kerala 2010] a) Sulphur 1. Chlorophyll b) Zinc 2. Nitrogenase c) Magnesium 3. Methionine d) Molybdenum 4. Auxin

1.a - 1, b - 2, c - 3, d -

2.a - 3, b - 4, c - 1, d - 2

3.a - 3, b - 1, c - 2, d - 4

4.a - 2, b - 4, c- 1, d - 3


Question: Match the following: Column I Column II a. Transport protein 1. Insulin b. Regulatory protein (Hormone) 2. Enzymes c. Sensory or receptor protein 3. Antibody d. Protective protein (Defence) 4. Ro

1.a= 6; b= 1; c = 4; d= 3; e= 5; f= 2; g= 7

2.a= 6; b= 1; c = 4; d= 3; e= 2; f= 5; g= 7

3.a= 6; b= 4; c = 1; d= 3; e= 5; f= 2; g= 7

4.a= 6; b= 4; c = 1; d= 3; e= 2; f= 5; g= 7


Question: Microfilaments are composed mainly of a protein called

1.Tubulin

2.Actin

3.Myosin

4.Chitin


Question: Middle lamella is made up of pectin. Pectin is chemically

1.Polymer of D-glucose units

2.Glucoronic and galacturonic acid

3.Heteropolymer of xylose, mannose and arabinose

4.N-acetyl glucosamine and N-acetyl muramic acid


Question: Mitoplast are

1.mitochondrial plastids

2.mitochondria without inner membrane

3.mitochondria without outer membrane

4.mitochondria without membranes


Question: Mitoplast are

1.mitochondrial plastids

2.mitochondria without inner membrane

3.mitochondria without outer membrane

4.mitochondria without membranes


Question: Most abundant component of cell is

1.Protein

2.Water

3.Cellulose

4.Lipid


Question: Myocardial muscle cells have numerous large mitochondria called as

1.myosomes

2.myocardial mitochondrions

3.mitosomes

4.sarcosomes


Question: NAD is ...

1.Nicotinamide adenosine diphosphate

2.Nicotine adenosine phosphate

3.Nicotinamide adenine dinucleotide

4.None of the above


Question: Nicotine and cocaine are ....

1.Peptides

2.Tannins

3.Alkaloids

4.Resin


Question: Omnis cellula e cellula is generalisation given by

1.Lamarck

2.Dutrochet

3.Leeuwenhoek

4.Virchow


Question: On hydrolysis, nucleoside does not yield

1.Phosphoric acid.

2.Pentose sugar.

3.Purines.

4.Pyramidine.


Question: Pectin is stained using

1.Iodine

2.Ruthenium red

3.acetocrmine

4.Sudan III


Question: Plant cell wall is made up of

1.Cellulose, hemicelluloses and pectin

2.Cellulose, hemicelluloses and chitin

3.Cellulose only

4.Cellulose and chitin


Question: Plant cell wall mainly composed of

1.Starch

2.Protien

3.Carbohydrates

4.Cellulose


Question: Protein glycosylation occurs in the

1.lumen of lysosomes

2.lumen of smooth endoplasmic reticulum

3.lumen of rough endoplasmic reticulum

4.lumen of mitochondria


Question: Read the following statements: (i) The polysaccharides made up of glucose monomers are cellulose, glycogen and starch. (ii) Fructose is the sweetest natural sugar. (iii) Glycine is the simplest am

1.Four

2.Five

3.Three

4.Two


Question: Read the statements ... ... [ kerala 2008] i) Element important for production of thyroxine is iodine ii) Vitamin B6 is niacin or nicotinic acid iii) Fructose is a hexose monosaccharide iv) Globul

1.a, b, c are correct, d is wrong

2.a, c are correct, b, d are wrong

3.a, b are correct, c, d are wrong

4.a is correct, b, c d are wrong


Question: RER is involved in the synthesis of

1.Membrane proteins and secretory proteins and nuclear proteins

2.Membrane proteins, secretory proteins and lysosomal proteins

3.Different proteins of the cell

4.Membrane proteins and secretory proteins


Question: Ribophorins are

1.transmembrane glycoprotein on RER

2.luminal proteins on RER

3.luminal proteins on SER

4.transmembrane glycoprotein on SER


Question: Rough Endoplasmic Reticulum is called ‘rough’ because

1.rough texture of the surface

2.surface is studded with membrane proteins

3.surface is studded with ribosomes

4.All of these


Question: Secondary cell wall of plants is

1.Located outside the primary wall

2.Located inside the plasma membrane

3.Located inside the primary wall

4.Located just beneath middle lamellae


Question: Select the correct answer from the following statements ... ..1) Cutin is fatty acid polymer2) Starch is glucose polymer3) Sucrose is monosaccharide4) Maltose is polymer of fructos

1.1, 2, 3 are correct

2.1 and 2 are correct

3.2 and 4 are correct

4.1 and 3 are correct


Question: Semiautonomous organelle in the cell is

1.Chloroplasts

2.Peroxisomes

3.Gogibodies

4.ER


Question: SER in the retinal cells are called as

1.Amyloid bodies

2.Myeloid bodies

3.Retinal reticulam

4.Sarcoplasmic reticulum


Question: SER is involved in

1.Phospholipid biosynthesis and detoxification reaction

2.Phospholipid biosynthesis

3.Protien synthesis

4.Phospholipid biosynthesis and protein synthesis


Question: Smooth endoplasmic reticulam is the site of

1.Carbohydrates synthesis

2.Protien synthesis

3.Lipid synthesis

4.Amino acid synthesis


Question: Statement 1: Competitive inhibitor is also called substrate analogue. Statement 2: It resembles the enzyme in structure.

1.Both statements -1 and statement - 2 are true and statement - 2 is the corr

2.Both statements -1 and statement - 2 are true but statement - 2 is not the

3.Statement -1 is true and statement - 2 is false.

4.Statement -1 is false and statement - 2 is true.


Question: Steroid hormones have receptors predominantly on

1.cell surface

2.Cytoplasm

3.both cell surface and cytoplasm

4.inside nucleus only


Question: Temperature is increased from 3° to 40°. The rate of enzyme controlled biochemical reaction will ...

1.Not change

2.Increase

3.Increase initially and then decrease

4.Decrease


Question: The cell theory is not applicable to

1.Virus

2.Fungi

3.Bacteria

4.Algae


Question: The form in which sugar is present in sugarcane ...

1.Maltose

2.Sucrose

3.Fructose

4.Glucose


Question: The functions of RER include

1.Protein synthesis and post translational modification

2.Protein synthesis and phospholipid biosynthesis

3.Protein synthesis

4.Protein synthesis and detoxification


Question: The hormone adrenaline is formed from __________ amino acids

1.Tyrosine

2.Glycine

3.Alanine

4.Tryptophan


Question: The longer the fatty acid chain, fluidity of the lipid bi layer

1.increases

2.decreases

3.no change in fluidity

4.none of the above


Question: The main function of Centrosome is

1.Formation of spindle fibre

2.Osmoregulation

3.Protien synthesis

4.Secretion


Question: The major biomolecule responsible for selective uptake of materials across plasma membrane

1.Protein

2.Carbohydrate

3.Lipids

4.Phospholipids


Question: The membrane around the vacuole is called

1.Cytoplast

2.Tonoplast

3.Amyloplast

4.elaioplast


Question: The most essential of the fatty acids is ...

1.Arachidonic acid

2.Linolenic acid

3.Linoleic acid

4.Oleic acid


Question: The number of mitochondria in a cell depends

1.pH of the cell

2.Shape of the cell

3.Both A&B

4.Functional state of cell


Question: The subunit of prokaryotic ribosomes are

1.60 S+40 S

2.60 S+30 S

3.50 S+30 S

4.70 S+30 S


Question: The term cell was coined by

1.Robert hooke

2.Schwann

3.Tatum

4.de Bary


Question: The term ‘ endoplasmic reticulum’ was coined by

1.Pomaret

2.Johnson

3.Porter

4.Reinert


Question: Two polypeptide chains are joined by hydrogen bonds to produce ...

1.-helix

2.Tertiary structure

3.β-pleated sheet

4.All the above


Question: Which is not a protein ...

1.Trypsin

2.Collagen

3.Rubisco

4.N-Acetylglucosamine


Question: Which is not correct? ...

1.All enzymes are biocatalysts

2.All proteins are enzymes

3.All enzymes are proteins

4.All enzymes are thermolabile


Question: Which is not true of enzymes? ...

1.They are specific

2.They are made of globular proteins

3.Enzymes are most active at maximum temperature

4.They are most active at optimum temperature


Question: Which of the following element is present in very less quantity in the body

1.K

2.Ca

3.Mg

4.Cu


Question: Which of the following groups has cell wall

1.Bacteria and plants

2.Bacteria, fungi and plants

3.Bacteria, fungi, plants and animals

4.Bacteria, plant and animals


Question: Which of the following is a aromatic polymer of phenols

1.Cutin

2.Lignin

3.Chitin

4.Pectin


Question: Which of the following is a semi-autonomous organelle ?

1.Mitochondria

2.Chloroplasts

3.Both A&B

4.Mitochondria, chloroplasts and ribosomes


Question: Which of the following is associated with the structure of Golgicomplex ?

1.Quatasomes

2.Annuli

3.Cristae

4.None of the above


Question: Which of the following is the histochemical marker for mitochondrial inner membrane

1.monoamine oxidase

2. cytochrome oxidase

3.malate dehydogenase

4.adenylate kinase


Question: Which of the following organelle is involved in cell wall synthesis

1.Mitochondria

2.Golgi apparatus

3.lysosome

4.Chloroplast


Question: Which of the following organelle is involved in xenobiotic detoxification

1.SER

2.RER

3.Lysosome

4.Golgi bodies


Question: Which of the following organelles has a continuous connection with nuclear membrane

1.Golgibodies

2.RER

3.SER

4.Lysosomes


Question: Which of the following pair is monosaccharide? ...

1.Glucose and Fructose

2.Glucose and Sucrose

3.Ribose and Maltose

4.Ribose and Sucrose


Question: Which of the following stain is used to visualise mitochondrion

1.Acetocarmine

2.Haematoxylin

3.Orange G

4.Janus green


Question: Which of the following statements are incorrect regarding ER?

1.The adipose tissue has both SER and RER

2.RBC lacks both RER and SER

3.Plasma cells has RER only

4.Hepatocytes has both RER and SER


Question: Which of the following statements are not true regarding cell wall

1.Plant cell wall is made up of cellulose

2.Cell wall provides mechanical support to the cell

3.Cell was is semi-permeable

4.Plant cell wall is a non-living structure


Question: Which of the following statements are true about mitochondria

1.Mitochondria has two envelopes

2.Inner membrane is not permeable

3.Outer membrane has porin protein channels

4.All of the above


Question: Which of the following statements are true regarding cellulose synthesis

1.Cellulose is synthesized on the external surface of the cell

2.The enzyme involved is a plasma membrane bound complex called cellulose syn

3.UDP glucose is the precursor of cellulose

4.All of these


Question: Which of the following statements are true regarding endoplasmic reticulum

1.SER is involved in synthesis of lipids

2.ER provides structural framework to the cell

3.ER acts as an intracellular transporting system

4.All of the above


Question: Which one is a fibrous protein? ...

1.Collagen

2.Globulin

3.Haemoglobin

4.Hordein


Question: Who coined the term mitochondria

1.Kolliker

2.Flemming

3.Altman

4.Benda


Question: Who got Nobel Prize in 1978 for working on enzymes? ..

1.Koshland

2.Arber and Nathans

3.Nass and Nase

4.H.G. Khorana