Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 Que- Which character differentiates living things from non-living organisms? 

a. They live in the same ecosystem. 

b. They are acted upon by the same environment 

c. They are highly organized and complex made of one or more cells and contain genetic material 

d. Both a and b 


Answer- They are highly organized and complex made of one or more cells and contain genetic material


Que- The study of fossils is called: 

a. Environmental Biology 

b. Historical biology 

c. Palaeontology 

d. Social biology 


Answer- Palaeontology


Que- The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by : 

a. Molecular biologists 

b. Microbiologists 

c. Freshwater biologists 

d. Social biologist 


Answer- Molecular biologists


Que- Sythetic insulin from pork was formed by which technique: 

a. Parasitology 

b. Social biological techniques 

c. Biotechnology 

d. Both a and c 


Answer- Biotechnology


Que- The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called : 

a. Environmental biology 

b. Social biology 

c. Human biology 

d. Both b and c 


Answer- Social biology


Que- Out of 92 naturally occurring chemical elements how many are considered as bio-elements: 

a. 6.0 

b. 16.0 

c. 26.0 

d. 15.0 


Answer- 16.0


Que- Oxygen accounts for ____ % of totals human body mass: 

a. 0.65 

b. 0.18 

c. 0.1 

d. 0.03 


Answer- 0.65


Que- The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called: 

a. An organ 

b. A molecule 

c. Tissue 

d. Both a and c 


Answer- A molecule


Que- Which one is a micromolecule? 

a. Polysaccharide 

b. Protein 

c. Hemoglobin 

d. ATP 


Answer- ATP


Que- A structure formed by groups of similar cells organized into loose sheetsor bundles performing similar functions is called as: 

a. An organ 

b. An organism 

c. A Tissue 

d. A Cell 


Answer- A Tissue


Que- In animals coordination is achieved by means of 

a. Respiratory system 

b. Nervous system 

c. Endocrine system 

d. Both b and c 


Answer- Both b and c


Que- Group of living organisms of the same species living in the same place at the same time is called 

a. Community 

b. Population 

c. Ecosystem 

d. Biome 


Answer- Population


Que- Different species of plants and animals living in the same habitat is called : 

a. Population 

b. Community 

c. Biome 

d. Habitat 


Answer- Community


Que- A large regional community primarily determined by climate is called : 

a. Population 

b. Community 

c. Biome 

d. Habitat 


Answer- Biome


Que- The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by 

a. Environmental biologist 

b. Paleontologist 

c. Marine biologist 

d. Social biologist 


Answer- Paleontologist


Que- It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect: 

a. Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones 

b. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones. 

c. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones. 

d. Older sediment layers did not have these radioactive isotopes 


Answer- Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.


Que- An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called: 

a. Biome 

b. Phyletic lineage 

c. Community 

d. Population 


Answer- Phyletic lineage


Que- Biological sciences have a set methodology and it is based on 

a. Experimental inquiry 

b. Esthetic preference 

c. Philosophical ideas 

d. Imaginations 


Answer- Experimental inquiry


Que- A series of hypothesis supported by the results of many tests is called 

a. Scientific law 

b. Theory 

c. Data 

d. Deduction 


Answer- Theory


Que- Which one is not correct for a productive theory? 

a. It is predictive 

b. It has explanatory power 

c. It discourages suggestion of different hypotheses 

d. None of these 


Answer- It discourages suggestion of different hypotheses


Que- Conclusion of Mendels work latter became a 

a. Scientific hypothesis 

b. Theory 

c. Scientific law 

d. Productive theory 


Answer- Scientific law


Que- Breeders have developed new and better varieties of food items by using which technique: 

a. Pasteurization 

b. Hydroponic culture technique 

c. Genetic engineering 

d. Biological control techniques 


Answer- Genetic engineering


Que- Production of genetically identical copiies of organisms/cells by asexula reproduction is called 

a. Mitosis 

b. Replication 

c. Cloning 

d. Biological control 


Answer- Cloning


Que- Astronauts may use which technique to grow fruits and vegetables 

a. Tissue culture techniques 

b. Cloning 

c. Pasterisation 

d. Hydroponic culture technique 


Answer- Hydroponic culture technique


Que- Which statement is incorrect for pasteurization? 

a. It is used to preserve yogurt and milk 

b. It was developed by Louis Pasteur. 

c. It involves heating the substance at high temperature for just few sec. 

d. It can be used to preserve vegetables and meat. 


Answer- It can be used to preserve vegetables and meat.


Que- What is the mode of transmission of Hepatitis virus? 

a. Aerosol 

b. Parentral (via blood) 

c. Skin penetration 

d. Unknown 


Answer- Parentral (via blood)


Que- Which disease can be controlled by vaccination? 

a. Measles 

b. Cancer 

c. Diabetes 

d. Heart attack 


Answer- Measles


Que- Vaccine was first developed by 

a. Louis Pasture 

b. Edward Jenner 

c. Jaber Ibn Hayan 

d. Aristotle 


Answer- Edward Jenner


Que- Which disease has been totally eradicated from the world because of effective vaccination? 

a. Measles 

b. Polio 

c. Small pox 

d. Hepatitis 


Answer- Small pox


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

a. They are used against microorganisms 

b. They are always effective against bacteria 

c. They are used in diseases like tuberculosis and pneumonia 

d. They are derived from bacteria only 


Answer- They are derived from bacteria only


Que- Which treatment is instituted in a cancerous patient: 

a. Antibiotic therapy 

b. Radiotherapy 

c. Gene therapy 

d. None of these 


Answer- Radiotherapy


Que- Which statement is incorrect for cloning? 

a. The nucleus of a fertillized egg is replaced by the nucleus from the cell of a fully developed individual 

b. Division of a single egg into one or more separate embryos. 

c. The individual is the mirror image of the parent organism 

d. It involve methods of sexual reproduction 


Answer- It involve methods of sexual reproduction


Que- Removal or degradation of environmental pollutants or toxic materials by living organisms is called 

a. Integrated disease management 

b. Hydroponic culture technique 

c. Pasteurization 

d. Bioremediation 


Answer- Bioremediation


Que- Which of the following is not a viral disease? 

a. Cowpox 

b. Mumps 

c. Tetanus 

d. Small pox 


Answer- Tetanus


Que- In human body 99% of total mass is formed of 

a. 16 bioelements 

b. 12 bioelements 

c. 10 bioelements 

d. 6 bioelements 


Answer- 6 bioelements


Que- Biological organization is 

a. simple 

b. advance 

c. complex 

d. highly complex 


Answer- highly complex


Que- The arrangement of _____ speaks of the division of labour within cell 

a. Molecule 

b. Subatomic particles 

c. Atoms 

d. Organelles 


Answer- Organelles


Que- Communities are _____ collection of organisms 

a. Static 

b. Dynamic 

c. May be static or dynamic 

d. None of these 


Answer- Dynamic


Que- The number of species of organisms currently known to science is 

a. 3500000.0 

b. 3500.0 

c. 2500000.0 

d. 2.5E7 


Answer- 2500000.0


Que- Which of the following is the correct sequence in the biological method? 

a. Observation?hypothesis?law?theory 

b. Observation?hypothesis?deduction?testing of deduction 

c. Hypothesis?observation?deduction?testing of deduction 

d. law?theory?deduction?observation 


Answer- Observation?hypothesis?deduction?testing of deduction


Que- Who coined the term CELL? 

a. Schwann 

b. Schleiden 

c. Robert Hook 

d. Both a and b 


Answer- Robert Hook


Que- Who opposed the idea the cell is an empty space bounded by thick wall? 

a. Lorenz Oken 

b. Schwann 

c. Robert Brown 

d. Rudolph Virchow 


Answer- Robert Brown


Que- Who first observed and thus hypothesized that new cells are formed from previously existing living cell? 

a. Theodor Schwann and Schleiden 

b. Rudolph Virchows 

c. Louis Pasteur 

d. Both b and c 


Answer- Rudolph Virchows


Que- Magnifying power of electron microscope as compared to eye is 

a. 500 X 

b. 250000X 

c. 500000X 

d. 250X 


Answer- 250000X


Que- In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon: 

a. Their physical properties like size & weight. 

b. Physical properties of the medium like its density. 

c. Their electrical properties like their charges 

d. Both a and b 


Answer- Both a and b


Que- Percentage of proteins in cell membrane is 

a. 20-40% 

b. 40-50% 

c. 60-80% 

d. 80-100% 


Answer- 60-80%


Que- Which of the statement about cell membrane is not true? 

a. It contains protein molecules embedded in lipid bilayer 

b. It is a differentially permeable membrane. 

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

d. It may get infolded to engulf solid or liquid material. 


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


Que- Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called 

a. Active transport 

b. Passive transport 

c. Co-transport 

d. Counter transport 


Answer- Passive transport


Que- The first layer of cell wall which is formed is: 

a. Primary wall 

b. Secondary wall 

c. Middle lamella 

d. All of these 


Answer- Primary wall


Que- Cellulose is the major component of 

a. Primary wall 

b. Secondary wall 

c. Middle lamella 

d. all of the above 


Answer- Primary wall


Que- Strengthening material of prokaryotic cell wall is 

a. Cellulose 

b. Chitin 

c. Inorganic salts silica waxes and ligin 

d. Peptidoglycan or Murein. 


Answer- Peptidoglycan or Murein.


Que- Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called 

a. Cytosol 

b. Cisternae 

c. Polysomes 

d. Cristae 


Answer- Cisternae


Que- Whone is not the function of endoplasmic reticulum? 

a. Nerve impulse conduction 

b. Transport of material 

c. Mechanical support 

d. Synthesis of conjugated molecules 


Answer- Synthesis of conjugated molecules


Que- Factory of ribosomal systhesis is 

a. Cytoplasm 

b. Nucleus 

c. Nucleolus 

d. Endoplasmic reticulum 


Answer- Nucleolus


Que- 60S and 40S subunit combine to form ______ particle 

a. 100 S 

b. 90 S 

c. 80 S 

d. 70 S 


Answer- 80 S


Que- A group of ribosomes attached to mRNA is known as 

a. Polymer 

b. Polypeptide 

c. Polysomes 

d. Monomer 


Answer- Polysomes


Que- Pancreas produces secretory granules that help in digestion. These granules after passing through endoplasmic reticulum are pinched off from ______ surface of Golgi apparatus: 

a. Forming face 

b. Maturating face 

c. Any of them 

d. None of these 


Answer- Maturating face


Que- During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called 

a. Lysosomes 

b. Primary lysosomes 

c. Secondary lysosomes 

d. Food vacuole 


Answer- Secondary lysosomes


Que- Autophagosomes are 

a. Those lysosomes which eat parts of their own cells to generate energy. 

b. Those lysosomes which eat old and worn out cellular organelles. 

c. Lysosomes which help in extracellular digestion 

d. Both a and b 


Answer- Both a and b


Que- Cellular organelles related with H2O2 are 

a. Glyoxisomes 

b. Lysosomes 

c. Peroxisomes 

d. Ribosomes 


Answer- Peroxisomes


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

a. They contain enzymes which help in conversion of fatty acids into carbohydrate 

b. They are abundant in soyabeans but absent in pea. 

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

d. They are signle membranous organelles 


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


Que- Which of the following cytoskeletal fiber contain tubulin protein? 

a. One which help in assembly of spindles during mitosis. 

b. One involved in internal cell motion. 

c. One involved in maintenance of cell shape. 

d. Both b and c 


Answer- One which help in assembly of spindles during mitosis.


Que- Centrioles are composed of ________ triplets of microtubules. 

a. 3.0 

b. 9.0 

c. 10.0 

d. 15.0 


Answer- 9.0


Que- The human naked eye can differentiate between two points which are _______ apart. 

a. 1.0 mm 

b. 0.1 mm 

c. 1.0 cm 

d. 1.0 dm 


Answer- 1.0 mm


Que- Ribonucleo-protein particles are the name of 

a. DNA 

b. Nucleus 

c. Eukaryotic ribosomes 

d. RNA 


Answer- Eukaryotic ribosomes


Que- Ribosomes + m-RNA 

a. Polysome 

b. Phlosome 

c. Polosome 

d. None of these 


Answer- Polysome


Que- In golgi apparatus the maturing face is 

a. Biconcave 

b. Convex 

c. Spherical 

d. Concave 


Answer- Concave


Que- Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by 

a. Ribosomes 

b. Cytoplasm 

c. Golgi apparatus 

d. Endoplasmic reticulum 


Answer- Golgi apparatus


Que- Amoeboid movements and movement of cyclosis is due to 

a. Microfilaments 

b. Microtubules 

c. Intermediate filaments 

d. Cytoskeleton 


Answer- Microfilaments


Que- Of the following which one is not the characteristic of mitochondria? 

a. It contains F1 particles 

b. It is involved in the synthesis of protein 

c. It is a self replicating organelle 

d. Number of mitochondria is constant 


Answer- Number of mitochondria is constant


Que- Chlorophyll is a/an _____ molecule 

a. Inorganic 

b. Cationic 

c. Anionic 

d. Organic 


Answer- Organic


Que- The part of chloroplast where CO2 is fixed to manufacture sugar is 

a. Stroma 

b. Grana 

c. Thylakoid 

d. Outer membrane 


Answer- Stroma


Que- The type of plastids which help in pollination is 

a. Chromoplasts 

b. Leucoplasts 

c. Chloroplasts 

d. All of these 


Answer- Chromoplasts


Que- Ribosomes are assembled in 

a. Nucleolus 

b. Nucleus 

c. DNA 

d. RNA 


Answer- Nucleolus


Que- The place of centromere where spindle fibres get attached is 

a. Kinetochore 

b. Kinochore 

c. Centromere region 

d. all of these 


Answer- Kinetochore


Que- Which of the following is not present in mitochondria? 

a. Enzymes 

b. Co-enzymes 

c. Ribosomes 

d. Thylakoids 


Answer- Thylakoids


Que- The stent energy in the form of ADP is regenerated by mitochondria into: 

a. AMP 

b. ADP 

c. ATP 

d. All of these 


Answer- ATP


Que- Which of the following combination is an example of self replicating organelles? 

a. Mitochondria Ribosomes 

b. Mitochondria Nucleus 

c. Mitochondria Chloroplast 

d. Mitochondria Vacuole 


Answer- Mitochondria Chloroplast


Que- Chlorophyll molecule contrains ________ as central metal ion. 

a. Fe2+ 

b. Mg2+ 

c. Zn2+ 

d. Cu2+ 


Answer- Mg2+


Que- On which of the following component of chloroplast chlorophyll is arranged? 

a. Cell membrane 

b. Matrix 

c. Thylakoids 

d. Stroma 


Answer- Thylakoids


Que- Which of the following impart a red color to Rose petals? 

a. Chloroplast 

b. Chlorophyll 

c. Chromoplast 

d. Leucoplast 


Answer- Chromoplast


Que- Number of nuclear pores/nucleus in an RBC are 

a. 1?3 

b. 3?4 

c. 10000.0 

d. 30000.0 


Answer- 3?4


Que- Period between two consecutive divisions is called 

a. Interphase 

b. Resting phase 

c. Mitotic phase 

d. Cell cycle 


Answer- Interphase


Que- DNA is synthesized and chromosome number is doubled in 

a. G1 phase 

b. S phase 

c. G2 phase 

d. G0 phase 


Answer- S phase


Que- In case of neurons, post mitotic cell escapes cell cycle and remain in _______ phase whthout proliferating further 

a. G0 phase 

b. G1 phase 

c. G2 phase 

d. S phase 


Answer- G0 phase


Que- Mitosis occurs in 

a. Diploid cells only 

b. Haploid cells only 

c. Both diploid and haploid cells 

d. Monoploid cells 


Answer- Both diploid and haploid cells


Que- Microtubules are composed of 

a. Action protein 

b. Actin and myosin proteins 

c. Sphingomyelin and tubulin 

d. Tubulin protein and traces of RNA 


Answer- Tubulin protein and traces of RNA


Que- From each pair of centrioles ________ sets of microtubules originate 

a. 2.0 

b. 3.0 

c. 4.0 

d. 5.0 


Answer- 3.0


Que- Mitotic apparatus in animals is formed by 

a. Aster and spindle 

b. Polar and kinetochore microtubules 

c. Spindle and RNA 

d. Spindle only 


Answer- Aster and spindle


Que- A special area of centromere with specific base arrangement and specific proteins where spindle fibers are attached is called 

a. Chromatin 

b. Aster 

c. Kinetochore 

d. Primary constriction 


Answer- Kinetochore


Que- Each kinetochore gets ________ fibers in mitosis 

a. 5.0 

b. 4.0 

c. 3.0 

d. 2.0 


Answer- 2.0


Que- Most critical phase of mitosis is 

a. Prophase 

b. Anaphase 

c. Metaphase 

d. Telophase 


Answer- Anaphase


Que- Reverse of prophase is 

a. Interphase 

b. Metaphase 

c. Anaphase 

d. Telophase 


Answer- Telophase


Que- In plants mitotic apparatus consists of 

a. Centriole 

b. Centriole and asters 

c. Centrioles, asters and spindles 

d. Spindles only 


Answer- Spindles only


Que- Which statement is not true about phragmoplast? 

a. Formed from vesicle originating from Golgi apparatus 

b. Present in plants only 

c. Formed at the end of anaphase 

d. Centre of dividing cell 


Answer- Formed at the end of anaphase


Que- Spread of tumor cells and establishment of secondary areas of growth is 

a. Benign tumors 

b. Cancer 

c. Metastasis 

d. Epistasis 


Answer- Metastasis


Que- Which is a feature of malignant tumor? 

a. Localized 

b. Little deleterious effects 

c. Few mitosis 

d. Metastasize 


Answer- Metastasize


Que- Feature of cancer cells in common? 

a. High nucleus to cytoplasmic ratio 

b. Prominent nucleoli 

c. Many mitosis 

d. All of these 


Answer- All of these


Que- Meiosis occur in 

a. Diploid cells only 

b. Haploid cells only 

c. Both diploid and haploid cells 

d. Monoploid cells only 


Answer- Diploid cells only


Que- Meiosis occurs at the time of 

a. Gamete formation in animals 

b. Spore formattion in plants 

c. Growth in animals 

d. Both a and b 


Answer- Both a and b

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