Biology MCQs

Option A: Algae

Option B: Amoeba

Option C: Fungi

Option D: Bacteria

Correct Answer: Fungi ✔

Option A: Starch

Option B: Glycogen

Option C: Cellulose

Option D: None of these

Correct Answer: Glycogen ✔

Option A: Do not have a cell wall

Option B: Are heterotrophic

Option C: Lack membrane bounded organelles

Option D: Reproduce by binary fission

Correct Answer: Lack membrane bounded organelles ✔

Option A: Starch

Option B: Glycogen

Option C: Cellulose

Option D: Polysaccharide

Correct Answer: Starch ✔

Option A: Starch

Option B: Glycogen

Option C: Cellulose

Option D: None of these

Correct Answer: Glycogen ✔

Option A: Diffusion

Option B: Osmosis

Option C: Phagocytosis

Option D: Plasmolysis

Correct Answer: Phagocytosis ✔

Option A: Phosphodiester bond

Option B: Peptide bond

Option C: Glycosidic Bond

Option D: Ionic bond

Correct Answer: Glycosidic Bond ✔

Option A: Mitochondria

Option B: Golgi bodies

Option C: Plastids

Option D: Lysosomes

Correct Answer: Lysosomes ✔

Option A: 717.6 Kcal

Option B: 727 Kcal

Option C: 737 Kcal

Option D: 747 Kcal

Correct Answer: 717.6 Kcal ✔

Option A: Starch

Option B: Glycogen

Option C: Amylose

Option D: Amylopectin.

Correct Answer: Amylose ✔

Option A: Decarboxylase

Option B: Hydrolase

Option C: Oxidoreductase

Option D: Transferase

Correct Answer: Hydrolase ✔

Option A: Monosaccharide

Option B: Oligosaccharide

Option C: Polysaccharide

Option D: None of these

Correct Answer: Monosaccharide ✔

Option A: 0.80%

Option B: 0.08%

Option C: 1.80%

Option D: 8%

Correct Answer: 0.08% ✔

Option A: Maltose

Option B: Sucrose

Option C: Fructose

Option D: Glucose

Correct Answer: Glucose ✔

Option A: Anti Rh-antibody

Option B: Enzyme

Option C: Myosin

Option D: Haemoglobin

Correct Answer: Myosin ✔

Option A: Trioses

Option B: Tetroses

Option C: Pentose

Option D: Hexose

Correct Answer: Pentose ✔

Option A: Number of polypeptide chains involved

Option B: Bending of polypeptide chains

Option C: Amino acid sequence

Option D: Coiling of polypeptide chains

Correct Answer: Amino acid sequence ✔

Option A: NH2 group

Option B: COOH group

Option C: R group

Option D: All of these

Correct Answer: R group ✔

Option A: Monosaccharides

Option B: Oligosaccharides

Option C: Polysaccharides

Option D: None of these

Correct Answer: Polysaccharides ✔

Option A: Monosaccharides

Option B: Oligosaccharides

Option C: Ploysacharides

Option D: Carbohydrates

Correct Answer: Carbohydrates ✔

Option A: 574 Kcal/kg

Option B: 674 Kcal/kg

Option C: 774 Kcal/kg

Option D: 874 Kcal/kg

Correct Answer: 574 Kcal/kg ✔

Option A: Lipid

Option B: Carbohydrate

Option C: Protein

Option D: Carotein

Correct Answer: Carbohydrate ✔

Option A: They are conjugated molecules of carbohydrates

Option B: Both have role in the extra cellular matrix of animals and bacterial cell wall

Option C: They are components of biological membranes.

Option D: Both are produced and secreted by endoplasmic reticulum

Correct Answer: Both are produced and secreted by endoplasmic reticulum ✔

Option A: Monosaccharide

Option B: Oligosaccharide

Option C: Polysaccharide

Option D: None of these

Correct Answer: Polysaccharide ✔

Option A: Ionic as well as non ionic substance in aqueous media retains their identity

Option B: Enzymes can not perform catalysis reaction in this medium

Option C: Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions

Option D: It is less favorable media for chemical reactions

Correct Answer: Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions ✔

Option A: Algae

Option B: Fungi

Option C: Insects

Option D: Protozoa

Correct Answer: Insects ✔

Option A: Hydrophilic Carbohydrates

Option B: Hydrophobic fats.

Option C: Both a and b

Option D: None of these

Correct Answer: B. Hydrophobic fats ✔

Option A: Taxonomy

Option B: Physiology

Option C: Morphology

Option D: Anatomy

Correct Answer: Physiology ✔

Option A: Cell nucleus

Option B: DNA or RNA

Option C: Cell membrane

Option D: Vacuole

Correct Answer: DNA or RNA ✔

Option A: Specific Heat of Vaporization

Option B: Specific Heat capacity

Option C: Caloric Heat

Option D: Both A and C

Correct Answer: Specific Heat capacity ✔

Option A: High specific heat of vaporization

Option B: High specific heat capacity

Option C: Its Dipole nature

Option D: Its liquid state

Correct Answer: High specific heat capacity ✔

Option A: Monovalent

Option B: Divalent

Option C: Trivalent

Option D: Tetravalent

Correct Answer: Tetravalent ✔

Option A: CO2

Option B: Water

Option C: Lipids

Option D: HCI

Correct Answer: Lipids ✔

Option A: Proteins

Option B: Carbohydrate

Option C: Lipids

Option D: Water

Correct Answer: Water ✔

Option A: Chemistry

Option B: Biochemistry

Option C: Molocular biology

Option D: Both a and b

Correct Answer: Biochemistry ✔

Option A: Water

Option B: Carbohydrate

Option C: Proteins

Option D: Lipids

Correct Answer: Water ✔

Option A: Metabolic reactions

Option B: Catabolic reactions

Option C: Anabolic reactions

Option D: None of these

Correct Answer: Anabolic reactions ✔

Option A: Oxygen

Option B: Hydrogen

Option C: Sulphur

Option D: Carbon

Correct Answer: Carbon ✔

Option A: Ionic bond

Option B: Hydrogen bond

Option C: Covalent bond

Option D: Electrovalent bond

Correct Answer: Covalent bond ✔

Option A: Lysosomes

Option B: Primary lysosomes

Option C: Secondary lysosomes

Option D: Food vacuole

Correct Answer: Secondary lysosomes ✔

Option A: Chloroplast

Option B: Chlorophyll

Option C: Chromoplast

Option D: Leucoplast

Correct Answer: Chromoplast ✔

Option A: Polysome

Option B: Phlosome

Option C: Polosome

Option D: None of these

Correct Answer: Polysome ✔

Option A: They contain enzymes which help in conversion of fatty acids into carbohydrate

Option B: They are abundant in soyabeans but absent in pea.

Option C: They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.

Option D: They are signle membranous organelles

Correct Answer: They are present through out life of a plant and provide them whth energy through Glyoxylate cycle. ✔

Option A: Forming face

Option B: Maturating face

Option C: Any of them

Option D: None of these

Correct Answer: Maturating face ✔

Option A: 100 S

Option B: 90 S

Option C: 80 S

Option D: 70 S

Correct Answer: 80 S ✔

Option A: Nerve impulse conduction

Option B: Transport of material

Option C: Mechanical support

Option D: Synthesis of conjugated molecules

Correct Answer: Synthesis of conjugated molecules ✔

Option A: Cytosol

Option B: Cisternae

Option C: Polysomes

Option D: Cristae

Correct Answer: Cisternae ✔

Option A: Cellulose

Option B: Chitin

Option C: Inorganic salts silica waxes and ligin

Option D: Peptidoglycan or Murein.

Correct Answer: Peptidoglycan or Murein. ✔

Option A: 27?C

Option B: 37?C

Option C: 47?C

Option D: 30?C

Correct Answer: 37?C ✔

Option A: Co-enzyme

Option B: Blocker

Option C: Inhibitor

Option D: Cofactor

Correct Answer: Inhibitor ✔

Option A: Irreversible inhibitor

Option B: Reversible inhibitor

Option C: Competitive inhibitor

Option D: Non-competitive inhibitor

Correct Answer: Competitive inhibitor ✔

Option A: It contains protein molecules embedded in lipid bilayer

Option B: It is a differentially permeable membrane.

Option C: It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.

Option D: It may get infolded to engulf solid or liquid material.

Correct Answer: It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles. ✔

Option A: Competitive inhibitors.

Option B: Non-competitive inhibitors

Option C: Irreversible inhibitors.

Option D: Both a and b

Correct Answer: Both a and b ✔

Option A: 500 X

Option B: 250000X

Option C: 500000X

Option D: 250X

Correct Answer: 250000X ✔

Option A: Irreversible inhibitor

Option B: Reversible inhibitor

Option C: Competitive inhibitor

Option D: Non-competitive inhibitor

Correct Answer: Competitive inhibitor ✔

Option A: Irreversible inhibitor

Option B: Reversible inhibitor

Option C: Competitive inhibitor

Option D: Non-competitive inhibitor

Correct Answer: Irreversible inhibitor ✔

Option A: Their physical properties like size & weight.

Option B: Physical properties of the medium like its density.

Option C: Their electrical properties like their charges

Option D: Both a and b

Correct Answer: Both a and b ✔

Option A: increase in concentration of enzyme

Option B: increase in concentration of substrate

Option C: increase in pH

Option D: increase in temperature

Correct Answer: increase in concentration of enzyme ✔

Option A: Activate

Option B: Unaffected

Option C: Denatured

Option D: None of these

Correct Answer: Denatured ✔

Option A: 2.0 ?m

Option B: 2-4 A

Option C: 24 ?m

Option D: 24 A

Correct Answer: 2.0 ?m ✔

Option A: Change in ionization of amino acids at the active site of the enzyme

Option B: Change in the ionization of the substrate

Option C: Denaturation of the enzyme

Option D: Increase in the reaction rate

Correct Answer: Denaturation of the enzyme ✔

Option A: Lorenz Oken

Option B: Schwann

Option C: Robert Brown

Option D: Rudolph Virchow

Correct Answer: Robert Brown ✔

Option A: Saturation

Option B: Denaturation

Option C: Composition

Option D: Inhibition

Correct Answer: Saturation ✔

Option A: Cytoplasm

Option B: Nucleus

Option C: Nucleolus

Option D: Endoplasmic reticulum

Correct Answer: Nucleolus ✔

Option A: Never changes

Option B: Forms no chemical bond with substrate

Option C: Determined by structure and the specificity of the enzyme

Option D: They are non specific in their action

Correct Answer: Determined by structure and the specificity of the enzyme ✔

Option A: Enzymes get denatured at higher substrate conc

Option B: Rate of reaction is indirectly proportional to substrate concentration at this point

Option C: All the active sites on enzyme molecule are occupied

Option D: None of these

Correct Answer: All the active sites on enzyme molecule are occupied ✔

Option A: Specific enzyme can transform only a specific substrate

Option B: Active site of an enzyme is a non flexible structure

Option C: Active site does not change before during or even after the reaction

Option D: It explains the mechanism of every chemical reaction

Correct Answer: It explains the mechanism of every chemical reaction ✔

Option A: Increase in enzyme molecule increases the available active sites.

Option B: This relation is for unlimited time period with unlimited enzyme concentration

Option C: If the concentration is doubled the rate will become two fold.

Option D: None of these.

Correct Answer: This relation is for unlimited time period with unlimited enzyme concentration ✔

Option A: Polymer

Option B: Polypeptide

Option C: Polysomes

Option D: Monomer

Correct Answer: Polysomes ✔

Option A: There is probably more substrate present than there is enzyme.

Option B: There is probably more enzayme available than there is substrate.

Option C: There is probably more product present than there is either substrate or enzyme.

Option D: The enzyme substrate complex is probably failing to form during the reaction

Correct Answer: B. There is probably more enzayme available than there is substrate ✔

Option A: Glyoxisomes

Option B: Lysosomes

Option C: Peroxisomes

Option D: Ribosomes

Correct Answer: Peroxisomes ✔

Option A: Active site

Option B: Binding site

Option C: Catalytic site

Option D: Allosteric site

Correct Answer: Active site ✔

Option A: Some of them consist solely of protein with no non protein part.

Option B: They catalyze a chemical reaction without being utilized.

Option C: All enzymes are fibrous Proteins.

Option D: They without their cofactor are called apoenzyme.

Correct Answer: All enzymes are fibrous Proteins. ✔

Option A: 3

Option B: 9

Option C: 10

Option D: 15

Correct Answer: 9 ✔

Option A: Apoenzyme

Option B: Holoenzyme

Option C: Activated enzyme

Option D: Both b and c

Correct Answer: Both b and c ✔

Option A: Prosthetic group

Option B: Coenzyme

Option C: Activator

Option D: Cofactor

Correct Answer: Activator ✔

Option A: Biconcave

Option B: Convex

Option C: Spherical

Option D: Concave

Correct Answer: Concave ✔

Option A: Nucleus

Option B: Chlorophast

Option C: Milochondria

Option D: Ribosome

Correct Answer: Milochondria ✔

Option A: Cofactor

Option B: Coenzymes

Option C: Activator

Option D: Enzymes

Correct Answer: Enzymes ✔

Option A: Ribosomes

Option B: Cytoplasm

Option C: Golgi apparatus

Option D: Endoplasmic reticulum

Correct Answer: Golgi apparatus ✔

Option A: Vitamins

Option B: Carbohydrates

Option C: Proteins

Option D: Metals

Correct Answer: Vitamins ✔

Option A: Increases

Option B: Decreases

Option C: Does not effect

Option D: Increases or decreases depending upon individual enzyme

Correct Answer: Decreases ✔

Option A: Microfilaments

Option B: Microtubules

Option C: Intermediate filaments

Option D: Cytoskeleton

Correct Answer: Microfilaments ✔

Option A: Change in pH of the surroundings.

Option B: Formation of Enzyme Susstrate complex.

Option C: Change in the charge of the active site.

Option D: Change in temperature

Correct Answer: Formation of Enzyme Susstrate complex. ✔

Option A: Emil Fischer

Option B: Koshland

Option C: Robin Williams

Option D: Rudolph Virchow

Correct Answer: Emil Fischer ✔

Option A: DNA

Option B: Nucleus

Option C: Eukaryotic ribosomes

Option D: RNA

Correct Answer: Eukaryotic ribosomes ✔

Option A: Inorganic

Option B: Cationic

Option C: Anionic

Option D: Organic

Correct Answer: Organic ✔

Option A: F.Miescher

Option B: Chargaff

Option C: Watson & Crick

Option D: Harshay & Chase

Correct Answer: Chargaff ✔

Option A: Chromoplasts

Option B: Leucoplasts

Option C: Chloroplasts

Option D: All of these

Correct Answer: Chromoplasts ✔

Option A: Chromosomal aberration

Option B: Insertion of gene

Option C: Deletion of gene

Option D: Point mutation

Correct Answer: Point mutation ✔

Option A: Endoderm

Option B: Ectoderm

Option C: Mesoderm

Option D: Extraembryonic layers

Correct Answer: Mesoderm ✔

Option A: Down’s syndrome

Option B: Klinifelter’s syndrome

Option C: Turner’s syndrome

Option D: Jacob’s syndrome

Correct Answer: A. Down’s syndrome ✔

Option A: Mitochondria Ribosomes

Option B: Mitochondria Nucleus

Option C: Mitochondria Chloroplast

Option D: Mitochondria Vacuole

Correct Answer: C. Mitochondria Chloroplast ✔

Option A: Primase

Option B: Polymerase

Option C: Helicase

Option D: Ligase

Correct Answer: Ligase ✔

Option A: Fe2+

Option B: Mg2+

Option C: Zn2+

Option D: Cu2+

Correct Answer: B. Mg2+ ✔

Option A: Epidermis

Option B: Muscle cells

Option C: Gut

Option D: Notochord

Correct Answer: Muscle cells ✔

Option A: 1?3

Option B: 3?4

Option C: 10000

Option D: 30000

Correct Answer: B. 3?4 ✔

Option A: Trait

Option B: Phenotype

Option C: Genotype

Option D: Ratios

Correct Answer: Genotype ✔

Option A: A’ blood group

Option B: B’ blood group

Option C: O’ blood group

Option D: AB’ blood group

Correct Answer: D. AB’ blood group ✔

Option A: Cell membrane

Option B: Matrix

Option C: Thylakoids

Option D: Stroma

Correct Answer: C. Thylakoids ✔