Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 Que- Maximum number of species of living things on earth are___________? 

a. Algae  

b. Fungi  

c. Insects  

d. Protozoa 

Answer- Insects

Que- Which statement is true about an aqueous medium________________? 

a. Ionic as well as non ionic substance in aqueous media retains their identity  

b. Enzymes can not perform catalysis reaction in this medium  

c. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions  

d. It is less favorable media for chemical reactions 

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

Que- Which of the following carbohydrate is tasteless___________? 

a. Monosaccharide  

b. Oligosaccharide  

c. Polysaccharide  

d. None of these 

Answer- Polysaccharide

Que- Which of the statement is not true for compounds like glycoprotein and glycolipids____________? 

a. They are conjugated molecules of carbohydrates  

b. Both have role in the extra cellular matrix of animals and bacterial cell wall  

c. They are components of biological membranes.  

d. Both are produced and secreted by endoplasmic reticulum 

Answer- Both are produced and secreted by endoplasmic reticulum

Que- A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called__________? 

a. Lipid  

b. Carbohydrate  

c. Protein  

d. Carotein 

Answer- Carbohydrate

Que- Specific heat of vaporization of water is_______________? 

a. 574 Kcal/kg  

b. 674 Kcal/kg  

c. 774 Kcal/kg  

d. 874 Kcal/kg 

Answer- 574 Kcal/kg

Que- Cn(H2O)n. is a general formula of_____________? 

a. Monosaccharides  

b. Oligosaccharides  

c. Ploysacharides  

d. Carbohydrates 

Answer- Carbohydrates

Que- Which one are most complex sugar_____________? 

a. Monosaccharides  

b. Oligosaccharides  

c. Polysaccharides  

d. None of these 

Answer- Polysaccharides

Que- Variety among amino acids is produced due to_____________? 

a. NH2 group  

b. COOH group  

c. R group   

d. All of these 

Answer- R group 

Que- Primary structure of proteins determines__________? 

a. Number of polypeptide chains involved  

b. Bending of polypeptide chains  

c. Amino acid sequence  

d. Coiling of polypeptide chains 

Answer- Amino acid sequence

Que- Ribose is an example of___________? 

a. Trioses  

b. Tetroses  

c. Pentose  

d. Hexose 

Answer- Pentose

Que- The one which is not a globular protein__________? 

a. Anti Rh-antibody  

b. Enzyme  

c. Myosin  

d. Haemoglobin 

Answer- Myosin

Que- Starch cellulose and glaycogen yield ___________ on complete hydrolysis? 

a. Maltose  

b. Sucrose  

c. Fructose  

d. Glucose 

Answer- Glucose

Que- ____________% of Glucose normally present in our blood is? 

a. 0.008 

b. 8.0E-4 

c. 0.018 

d. 0.08 

Answer- 8.0E-4

Que- Which of the following carbohydrate can not be hydrolysed__________________? 

a. Monosaccharide  

b. Oligosaccharide  

c. Polysaccharide  

d. None of these 

Answer- Monosaccharide

Que- An enzyme which converts a dipeptide into separate amino acids is an example of__________? 

a. Decarboxylase  

b. Hydrolase  

c. Oxidoreductase  

d. Transferase 

Answer- Hydrolase

Que- Which one is soluble in hot water_____________? 

a. Starch  

b. Glycogen  

c. Amylose  

d. Amylopectin. 

Answer- Amylose

Que- For the synthesis of 10g of glucose ______________ of energy is required? 

a. 717.6 Kcal  

b. 727 Kcal  

c. 737 Kcal  

d. 747 Kcal 

Answer- 717.6 Kcal

Que- Cellular digestion is associated with which organelle__________? 

a. Mitochondria  

b. Golgi bodies  

c. Plastids  

d. Lysosomes 

Answer- Lysosomes

Que- The covalent bond between two monosaccharide subunits is called________________? 

a. Phosphodiester bond  

b. Peptide bond  

c. Glycosidic Bond  

d. Ionic bond 

Answer- Glycosidic Bond

Que- The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________? 

a. Diffusion  

b. Osmosis  

c. Phagocytosis  

d. Plasmolysis 

Answer- Phagocytosis

Que- Which of the following polysaccharide is called animal starch_________________? 

a. Starch  

b. Glycogen  

c. Cellulose  

d. None of these 

Answer- Glycogen

Que- Which one gives blue colour with iodine_______________? 

a. Starch  

b. Glycogen  

c. Cellulose  

d. Polysaccharide 

Answer- Starch

Que- Mycoplasmas have been included in bacteria because: 

a. Do not have a cell wall  

b. Are heterotrophic  

c. Lack membrane bounded organelles  

d. Reproduce by binary fission 

Answer- Lack membrane bounded organelles

Que- Which one is abundant in animals___________? 

a. Starch  

b. Glycogen  

c. Cellulose  

d. None of these 

Answer- Glycogen

Que- The one which can tolerate highest external osmotic pressure is __________? 

a. Algae  

b. Amoeba  

c. Fungi  

d. Bacteria 

Answer- Fungi

Que- The cell wall of oomycetes is chiefly composed of___________? 

a. Chitin  

b. Cellulose  

c. Lignin  

d. Proteins 

Answer- Cellulose

Que- __________ is example of pure form of cellulose? 

a. Silk  

b. Wool  

c. Cotton  

d. Paper 

Answer- Cotton

Que- A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called________________? 

a. Monosaccharide  

b. Fatty acid  

c. Neutral lipid  

d. Nucleic acid 

Answer- Neutral lipid

Que- Lipids are soluble in which of the following_______________? 

a. Water  

b. Ether  

c. All solvents  

d. Not in any of the above 

Answer- Ether

Que- One celled green ptotists are included in___________? 

a. Monera  

b. Algae  

c. Slime molds  

d. Plants 

Answer- Algae

Que- Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of__________________? 

a. C-C bonds  

b. C-H bonds  

c. C-N bonds  

d. C-O bonds 

Answer- C-H bonds

Que- Fatty acids containing 18 C atoms and a single double bond is____________? 

a. Saturated Fatty acid  

b. Unsaturated fatty acid  

c. Oleic Acid  

d. Plamitic acid 

Answer- Oleic Acid

Que- Pick the odd one out 

a. Psilophyton  

b. Rhynia  

c. Cooksonia  

d. Psilotum 

Answer- Psilotum

Que- Which of the following statement is incorrect5 for fats containing unsaturated fatty acid_____________? 

a. They contain double bond  

b. They are usually solid at room temperature  

c. They are lighter than water  

d. Their specific gravity is less than 1 

Answer- They are usually solid at room temperature

Que- Which one the following fatty acid is more soluble in an organic solvent and has higher melting point____________? 

a. Acetic acid  

b. Butyric acid  

c. Palmitic acid  

d. All have same 

Answer- Palmitic acid

Que- Peptide bond is_____________? 

a. C-N link  

b. C- O lind  

c. N-H link  

d. C-H link 

Answer- C-N link

Que- Animals obtain carbohydrates mainly from___________? 

a. Glucose  

b. Starch  

c. Sucrose  

d. Glycogen 

Answer- Starch

Que- The one which is incorrect pair? 

a. Sori – Indusium  

b. Arthrophytes – Jointed  

c. Dichotomous – Vernation  

d. Lycopods – Ground pries 

Answer- Dichotomous – Vernation

Que- Double fertilization occurs in_________? 

a. All plants  

b. All seed plants  

c. Gymnosperms  

d. Angiosperms 

Answer- Angiosperms

Que- Proteins comprise of ___________% of the total dry weight of a cell? 

a. 0.4 

b. 0.5 

c. 0.6 

d. 0.7 

Answer- 0.5

Que- Adult birds normally possess only one functional____________? 

a. Ureter  

b. Ovary  

c. Lung  

d. Testis 

Answer- Ovary

Que- Chemical component/s less in eukaryotic cell as compared to prokaryotic cell is / are (i) lipids (ii) carbodydrates (iii) proteins (iv) DNA_________________? 

a. i & ii  

b. iii & iv  

c. i ii iii & iv  

d. iv only 

Answer- iv only

Que- Following possess bilateral symmetry as larva and radial symmetry as adult: 

a. Chordata  

b. Hydra  

c. Echinodermata  

d. Hemichordata 

Answer- Echinodermata

Que- Proteins are polymers of___________? 

a. Fatty acids  

b. Isoprenoid units  

c. Amino acids  

d. Nucleotides 

Answer- Amino acids

Que- Which of the following is the empirical formula of chlorophyll b? 

a. C55H70O5N4Mg  

b. C55H72O6N4Mg  

c. C55H70O6N4Mg  

d. C55H72O5N4Mg 

Answer- C55H70O6N4Mg

Que- In Glycin an amino acid R group is replaced by____________? 

a. H  

b. CH3  

c. COOH  

d. C = O 

Answer- H

Que- How many moles of carbon dioxide are produced by complete oxidation of one mole of puruvic acid? 

a. 1.0 

b. 2.0 

c. 3.0 

d. 6.0 

Answer- 3.0

Que- The element in basic structure of proteins which differentiate them from carbohydrates________? 

a. C  

b. S  

c. H  

d. N 

Answer- S

Que- Hunger pangs usually begin ______ after the previous meal. 

a. 2-4 hours  

b. 6-8 hours  

c. 10-12 hours  

d. 12-24 hours 

Answer- 12-24 hours

Que- Total number of amino acids discovered so far in cells and tissues are______________? 

a. 20.0 

b. 25.0 

c. 150.0 

d. 170.0 

Answer- 170.0

Que- The major constituent of blood plasma is___________? 

a. Protein  

b. NaCl  

c. Water  

d. Cholesterol 

Answer- Water

Que- An insulin molecule consists of _________ polypeptide chains? 

a. 1.0 

b. 2.0 

c. 3.0 

d. 4.0 

Answer- 2.0

Que- The windpipe or trachea lies? 

a. Dorsal to oesophagus  

b. Ventral to oesophagus  

c. Lateral to oesophagus  

d. None of these 

Answer- None of these

Que- A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________? 

a. Phosphodiester linkage  

b. Glycosidic bond  

c. Peptide bond  

d. Hydrogen bond 

Answer- Peptide bond

Que- Total number of amino acids in a hemoglobin molecule are__________? 

a. 554.0 

b. 564.0 

c. 574.0 

d. 584.0 

Answer- 574.0

Que- Which structure of protein gives information aboutnumber and sequence of amino acids in it_______________? 

a. Primary structure  

b. Secondary structure  

c. Tertiary structure  

d. Quaternary structure 

Answer- Primary structure

Que- Locomotory structures are not found in which of the following group? 

a. Amoebas  

b. Zooflagellates  

c. Ciliates  

d. Apicomplexans 

Answer- Apicomplexans

Que- Hemoglobin molecule exhibits which structural organization of proteins___________? 

a. Primary structure  

b. Secondary structure  

c. Tertiary structure  

d. Quaternary structure 

Answer- Quaternary structure

Que- Yeasts reproduce asexually by forming____________? 

a. Asci  

b. Basidia  

c. Both a & b  

d. Buds 

Answer- Buds

Que- In an aqueous environment the most stable tertiary conformation is that in which _________ amino acids are buried inside the conformation? 

a. Hydrophobic  

b. Hydrophilic  

c. Basic  

d. None of these 

Answer- Hydrophobic

Que- Which of the following statement is incorrect about RNA_________________? 

a. The pentose sugar in it is Ribose.  

b. It contains Adenine Guanine Thymine and Cytosine  

c. It is present in the nucleoli  

d. It may be folded back on itself to give double helical characteristics. 

Answer- It contains Adenine Guanine Thymine and Cytosine

Que- Protein coasts of viruses are synthesized in____________? 

a. Lytic cycle  

b. Lysogenic cycle  

c. Both a & b  

d. All of these 

Answer- Lytic cycle

Que- Each turn of DNA contain ____________ nitrogenous base pairs? 

a. 5.0 

b. 10.0 

c. 20.0 

d. 25.0 

Answer- 10.0

Que- Membranes of the grane are sites where? 

a. Oxygen is stored  

b. Food is stored  

c. Sunlight is trapped  

d. CO2 is stored. 

Answer- Sunlight is trapped

Que- Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________? 

a. Globular proteins  

b. Fibrous Proteins  

c. Both a and b  

d. None of these 

Answer- Globular proteins

Que- The simplest of oxygen producting photosynthetic organisms are____________? 

a. Algae  

b. Bacteria  

c. Cyanobacteria  

d. Chlamydomonas 

Answer- Cyanobacteria

Que- Amphoixus is a__________? 

a. Chordate  

b. Protochordate  

c. Lower chordate  

d. All of these 

Answer- All of these

Que- Which structural organization is most common in globular proteins____________? 

a. Primary  

b. Secondary  

c. Tertiary  

d. Quaternary 

Answer- Tertiary

Que- Which of the following does not show quaternary structure____________? 

a. Haemoglobin  

b. Pepsin  

c. Fibrin  

d. Insulin 

Answer- Fibrin

Que- Which of the following occurs in anaerobic respiration but not in aerobic respiration? 

a. Release of CO2  

b. Reduction of NAD  

c. Formation of ATP  

d. Production of ethanol from acetaldehyde 

Answer- Production of ethanol from acetaldehyde

Que- helical structure is kept by the formation of _________ bonds among amino acids molecules? 

a. H bonds  

b. Disulphide Bond  

c. Ionic bond  

d. Hydrophobic bonds 

Answer- H bonds

Que- Which of the following are triploblastic and acoelomate? 

a. Sponges  

b. Annelida  

c. Platyhelminthes  

d. Aves 

Answer- Platyhelminthes

Que- The food of hydra consists of___________? 

a. Humus  

b. Detritus  

c. Dead microscopic animals  

d. Small crustaceans 

Answer- Small crustaceans

Que- Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong____________? 

a. Globular proteins  

b. Fibrous Proteins  

c. Both a and b  

d. None of these 

Answer- Fibrous Proteins

Que- If a plasmolysed plant cell is placed in water the cell will___________? 

a. Burst  

b. Be Killed  

c. Be deplasmolysed  

d. Show no change in it 

Answer- Be deplasmolysed

Que- ATP is a an important molecule for its major function___________? 

a. As an energy currency of the cell  

b. As a coenzyme  

c. Both a and b  

d. None of these 

Answer- As an energy currency of the cell

Que- The first organism of whose genome was completely discovered was____________? 

a. Human beings  

b. Influenza Virus  

c. Hemophilus Influenza  

d. None of these 

Answer- Hemophilus Influenza

Que- All of the following veins carry deoxygenated blood except 

a. Superior vena cava  

b. Inferior vena cava  

c. Hepatic vein  

d. Pulmonary vein 

Answer- Pulmonary vein

Que- Animals fats are ______________ atroom temperature? 

a. Liquids  

b. Gases  

c. Solids  

d. None of these 

Answer- Solids

Que- Sebum produced from sebaceous glands in a mammal helps in___________? 

a. Protection against micro organisms  

b. Temperature regulation  

c. Excretion  

d. All of these 

Answer- Protection against micro organisms

Que- Which one is not found in fatty acids in acylglycerols____________? 

a. C-6  

b. C-25  

c. C-26  

d. C-30 

Answer- C-25

Que- The one that stores calcium is __________? 

a. Sarcolemma  

b. Sarcoplasm  

c. Sarcoplasmic reticulum  

d. Cytosol 

Answer- Sarcoplasmic reticulum

Que- Which one of the following is most likely to occur in an animal during winter? 

a. Activation of sweat glands  

b. Dilation of skin blood vessels  

c. Panting  

d. Thermogenesis 

Answer- Thermogenesis

Que- In esterification OH comes from_______________? 

a. Organic acid  

b. Alcohol  

c. Water  

d. Sugar 

Answer- Alcohol

Que- How many carbon atoms are required to form a furan ring (ribofuranose)_____________? 

a. 3.0 

b. 4.0 

c. 5.0 

d. 2.0 

Answer- 4.0

Que- Sleep movements are a type of___________? 

a. Turgor movements  

b. Growth movements  

c. Tactic movements  

d. Paratonic movments 

Answer- Turgor movements

Que- Keto group is represented as___________? 

a. CO  

b. C-COO-C  

c. HCOH  

d. HOH 

Answer- CO

Que- The type of learning in which there is loss or decrease in response to repeated stimuli? 

a. Imprinting  

b. Habituation  

c. Latent learning  

d. Insight learning 

Answer- Habituation

Que- Glycolipids and glycoproteins have structural role in the ______________ matrix of animal and bacterial cell? 

a. Extracellular  

b. Intracellular  

c. Both of these  

d. Glucose 

Answer- Extracellular

Que- The cells present in testes and secrete testosterone are___________? 

a. Sertoli cells  

b. Germinal cell  

c. Interstitial cells  

d. Spermatocyte 

Answer- Interstitial cells

Que- In Cx(H2O)y x ranges from______________? 

a. 1 to 3 thousand  

b. 3 to many thousand  

c. 3 to 5 thousand  

d. 5 to 9 thousand 

Answer- 3 to many thousand

Que- Exposure to low temperature stimulates plants to flower. This is called___________? 

a. Photoperiodism  

b. Thermotropism  

c. Vernalisation  

d. Thermoregulation 

Answer- Vernalisation

Que- The basic structural unit of a chromosome is____________? 

a. The centromere  

b. Nuceleosome  

c. Telomere  

d. Histone 

Answer- Nuceleosome

Que- In living organisms the lubricant which provides protection against damage resulting from friction is___________? 

a. Carbohydrates  

b. Fatty acid  

c. Water  

d. Protein 

Answer- Water

Que- The first stage of development in which a cavity appears is the__________? 

a. Neurula  

b. Morula  

c. Gastrula  

d. Balastula 

Answer- Balastula

Que- The trioses which are intermediate in respiration and photosynthesis are_______________? 

a. Glyceraldehydes  

b. Dihydroxy acetone  

c. Both of these  

d. None of these 

Answer- Both of these

Que- The one which causes contraction of wall of the uterus during and after birth? 

a. ADH  

b. MSH  

c. Oxytocin  

d. Progesterone 

Answer- Oxytocin

Que- The monosaccharide found in some bacteria and occurring rarely are______________? 

a. Trioses  

b. Hexoses  

c. Tetroses  

d. Pentoses 

Answer- Tetroses

Que- Which statement correctly describes the transcription of DNA? 

a. It produces another DNA molecule  

b. It produces mRNA  

c. It is a semi conservation process  

d. It occurs at surface of ribosomes 

Answer- It produces mRNA

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