Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 Que- The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is: 

a. Human Biology  

b. Environmental Biology  

c. Genetics  

d. Bio-technology 


Answer- Bio-technology


Que- The branch in which organism's life cycle, mode of transmission and interaction with their hosts are studied is: 

a. Anatomy  

b. Physiology  

c. Parasitology  

d. Social Biology 


Answer- Parasitology


Que- The molecules of living matter that provide building blocks are mostly based on: 

a. Carbon  

b. Nitrogen  

c. Hydrogen  

d. Ammonia 


Answer- Carbon


Que- Human blood is an example of__________? 

a. Organelle  

b. Tissues  

c. Organic compound  

d. Inorganic compounds 


Answer- Tissues


Que- With different chemical arrangements and formation Of complex molecules, the life emerges on the level of the ? 

a. Cells  

b. Tissues  

c. Organs  

d. Organ System 


Answer- Cells


Que- Organelles are_______________? 

a. Unicellular structures  

b. Multi-cellular structures  

c. Sub-cellular structures  

d. Non-cellular structures 


Answer- Sub-cellular structures


Que- Functional unit of DNA Is____________? 

a. Nucleus  

b. Genes  

c. Chromosomes  

d. Nucleolus 


Answer- Genes


Que- Various tissue types combine to make up__________? 

a. Cells  

b. Organs  

c. Organ System  

d. Organelles 


Answer- Organs


Que- Two or more populations of different species living and interacting in the same area form 

a. Biosphere  

b. Community  

c. Population System  

d. Ecosystem 


Answer- Community


Que- A group of similar cells that perform a specific function is: 

a. Organ  

b. Tissues  

c. Organelle  

d. Organ System 


Answer- Tissues


Que- Which of the following is an example of “molecule”? 

a. Chloroplast  

b. A Nerve Cell  

c. DNA  

d. Hydrogen 


Answer- DNA


Que- A group of very similar inter breeding organisms constitutes? 

a. Biosphere  

b. Ecosystem  

c. Population  

d. Species 


Answer- Species


Que- Members of one species inhabiting the same are form__________? 

a. Species  

b. Community  

c. Ecosystem  

d. Population 


Answer- Population


Que- On the basis of collected facts and figures, a scientist formulates a factitive statement called: 

a. Observation  

b. Research work  

c. Hypothesis  

d. Inductive Reasoning 


Answer- Hypothesis


Que- Robert Hooke discovered_____________? 

a. Nucleus  

b. Mitochondria  

c. Cell  

d. DNA 


Answer- Cell


Que- Steps Involved in scientific method are ? 

a. Hypothesis –>Accumulated data –> observation & experimentation –> conclusion  

b. New data —> Conclusion —> Accumulated data —> Observation & experimentation  

c. Accumulated data – New data – Observation & experimentation – Hypothesis –> Conclusion  

d. Accumulated data —> Hypothesis –> Observation & experimentation —> New data —> Conclusion 


Answer- Accumulated data —> Hypothesis –> Observation & experimentation —> New data —> Conclusion


Que- Malaria is associated with___________? 

a. Culex Mosquito  

b. Culiesta Mosquito  

c. Anopheles Mosquito  

d. Culex & Anopheles Mosquito 


Answer- Anopheles Mosquito


Que- Biologist 'Grass' discovered the life cycle of plasmodium in_______? 

a. 1896.0 

b. 1897.0 

c. 1898.0 

d. 1899.0 


Answer- 1898.0


Que- The first antibiotic to be discovered was_____________? 

a. Penicillin  

b. Cephalosporin  

c. Amino glycosides  

d. Erythromycin 


Answer- Penicillin


Que- Immunization by vaccination was first introduced by? 

a. Fleming in 1945  

b. Florey & Chain in 1975  

c. Flore & Chain in 1795  

d. Edward Jenner in 1795 


Answer- Edward Jenner in 1795


Que- The Science of growing terrestrial plants in an aerated solution is_________? 

a. Hydrodynamics  

b. Hydroponics  

c. Hydrotonics  

d. None of them 


Answer- Hydroponics


Que- An educated guess is called: 

a. Accumulated Data  

b. Observation  

c. Hypothesis  

d. Conclusion 


Answer- Hypothesis


Que- Dolly, the sheep was a highly successful clone from a somatic cell, reported back in________? 

a. 1993.0 

b. 1994.0 

c. 1995.0 

d. 1996.0 


Answer- 1996.0


Que- Crop rotation helps in______________? 

a. Growth of pathogens  

b. Soil Infertility  

c. Slowing of crops growth  

d. Eradication of disease 


Answer- Eradication of disease


Que- People living in high altitudes (like mountains) usually have a _________? 

a. smaller number of Red Blood Cells  

b. larger number of Red Blood Cells  

c. smaller number of White Blood Cells  

d. larger number of White Blood Cells 


Answer- larger number of Red Blood Cells


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

a. They live in the same ecosystem.  

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

c. They are acted upon by the same environment  

d. Both a and b 


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


Que- Which Vitamin is needed for the formation of a light-sensitive pigment in the retina. 

a. Vitamin A  

b. Vitamin C  

c. Vitamin D  

d. B complex 


Answer- Vitamin A


Que- The average internal temperature of human body is __________? 

a. 35 oC  

b. 36 oC  

c. 37 oC  

d. 38 oC 


Answer- 37 oC


Que- The study of fossils is called? 

a. Environmental Biology  

b. Historical biology  

c. Palaeontology  

d. Social biology 


Answer- Palaeontology


Que- About __________ of the body weight of a mammal is water ? 

a. 0.6 

b. 0.65 

c. 0.7 

d. 0.75 


Answer- 0.7


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- On wound __________ fight foreign particles, like bacteria? 

a. White Blood cells  

b. Red Blood Cells  

c. Platelets  

d. Plasma 


Answer- White Blood cells


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

a. Biotechnology  

b. Social biological techniques  

c. Parasitology  

d. Both a and c 


Answer- Biotechnology


Que- Blood is carried towards the heart by __________? 

a. Arteries  

b. Capillaries  

c. Veins  

d. none of these 


Answer- Veins


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- __________ is essential for the formation of hemoglobin. 

a. Calcium  

b. Iron  

c. Water  

d. Carbohydrates 


Answer- Iron


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- ___________ are needed as a source of energy for the vital activities of the body? 

a. Calcium  

b. Iron  

c. Water  

d. Carbohydrates 


Answer- Carbohydrates


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 of them is a micro-molecule? 

a. Polysaccharide  

b. Protein  

c. Hemoglobin  

d. ATP 


Answer- ATP


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

a. An organ  

b. An organism  

c. A Tissue  

d. A Cell 


Answer- A Tissue


Que- Haemodialysis means cleaning of____________? 

a. Urine  

b. Blood  

c. Glomerular filterate  

d. Coelomic fluid 


Answer- Blood


Que- In animals coordination is achieved by means of? 

a. Nervous system  

b. Endocrine system  

c. Respiratory system  

d. Both A and B 


Answer- Both A and B


Que- Production of sweat and sebum is related with ? 

a. Skin  

b. Liver  

c. Lungs  

d. GIT 


Answer- Skin


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- The evaporative cooling in the respiratory tract of dogs is called? 

a. Vasodilation  

b. Vasoconstriction  

c. Panting  

d. All of these 


Answer- Panting


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- Which of the following pathogen type cause disease that can be treated with antibiotics ? 

a. bacteria  

b. fungi  

c. virus  

d. none of these 


Answer- bacteria


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

a. Population  

b. Community  

c. Biome  

d. Habitat 


Answer- Biome


Que- Most cell membranes are composed principally of ? 

a. DNA ad protein  

b. Protein and Lipids  

c. Protein and Chitin  

d. Protein and RNA 


Answer- Protein and Lipids


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- Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ? 

a. Concentration of water molecules inside and outside the cell  

b. Concentration of enzymes on either side of the cell membrane  

c. Rate of molecular motion on either side of the cell membrane  

d. None of these 


Answer- Concentration of water molecules inside and outside the cell


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 radioactive isotopes as that of the young ones  

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


Que- Sodium ions are “pumped” from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of 

a. Diffusion  

b. Passive transport  

c. Osmosis  

d. Active transport 


Answer- Active transport


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- Proteins are made from amino acids by the process of ______________? 

a. Hydrolysis  

b. Pinocytosis  

c. Dehydration synthesis  

d. Active transport 


Answer- Dehydration synthesis


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- Which is an organic compound found in most cells ? 

a. Water  

b. Glucose  

c. Oxygen  

d. Sodium chloride 


Answer- Glucose


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 are the four most abundant elements in living cells ? 

a. carbon, oxygen, nitrogen, sulfur  

b. carbon, oxygen, hydrogen, nitrogen  

c. carbon, oxygen, sulfur, phosphorus  

d. carbon, sulfur, hydrogen, magnesium 


Answer- carbon, oxygen, hydrogen, nitrogen


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- Starch is converted into maltose by? 

a. diastase  

b. invertase  

c. maltase  

d. amylase 


Answer- diastase


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- Co-enzyme is often formed from ? 

a. lipid  

b. protein  

c. inorganic ion  

d. vitamin 


Answer- vitamin


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

a. Mitosis  

b. Replication  

c. Cloning  

d. Biological control 


Answer- Cloning


Que- Messenger RNA is formed in_________? 

a. nucleus  

b. chloroplast  

c. mitochondria  

d. none of these 


Answer- nucleus


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- Number of chromosomes in E.coli ? 

a. 1.0 

b. 2.0 

c. 4.0 

d. 6.0 


Answer- 1.0


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- Protein factory is___________? 

a. nucleus  

b. ribosome  

c. golgi complex  

d. centriole 


Answer- ribosome


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- Smallest disease causing agents in plants are ? 

a. virion  

b. mycoplasma  

c. viroids  

d. prions 


Answer- viroids


Que- Which disease can be controlled by vaccination? 

a. Measles  

b. Cancer  

c. Diabetes  

d. Heart attack 


Answer- Measles


Que- The major cell infected by the HIV is lymphocyte ? 

a. helper-T  

b. B  

c. both T and B  

d. none of these 


Answer- helper-T


Que- Vaccine was first developed by_______________? 

a. Louis Pasture  

b. Edward Jenner  

c. Jaber Ibn Hayan  

d. Aristotle 


Answer- Edward Jenner


Que- Pigment present in red algae is_____________? 

a. fucoxanthin  

b. phycocyanin  

c. phycoerythrin  

d. bilirubin 


Answer- phycoerythrin


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- Nutrition in fungi is___________? 

a. Photosynthetic  

b. Chemosynthetic  

c. Completely parasitic  

d. Absorptive heterotrophs 


Answer- Absorptive heterotrophs


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- Fungi resemble plants because they lack___________? 

a. Cell wall  

b. Cytoplasm  

c. Centriole  

d. Nucleus 


Answer- Centriole


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 is a parasitic plant? 

a. cuscuta  

b. rose  

c. ferns  

d. mosses 


Answer- cuscuta


Que- Which statement is incorrect for cloning? 

a. The nucleus of a fertilized 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- True roots absent in_____________? 

a. ferns  

b. bryophytes  

c. gymnosperms  

d. angiosperms 


Answer- bryophytes


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- The mechanism for ATP synthesis is_____________? 

a. Chemosynthesis  

b. Photosynthesis  

c. Phosphorylation  

d. Chemiosmosis 


Answer- Chemiosmosis


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

a. Cowpox  

b. Mumps  

c. Tetanus  

d. Small pox 


Answer- Tetanus


Que- Enzyme present in the saliva is_____________? 

a. lipase  

b. trypsin  

c. ptyalin  

d. invertase 


Answer- ptyalin


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

a. 16 Bio-elements  

b. 12 Bio-elements  

c. 10 Bio-elements  

d. 6 Bio-elements 


Answer- 6 Bio-elements


Que- Nitrogen is present in___________? 

a. carbohydrates  

b. proteins  

c. lipids  

d. carbonates 


Answer- proteins


Que- Biological organization is_____________? 

a. simple  

b. advance  

c. complex  

d. highly complex 


Answer- highly complex


Que- Operculum is present in_____________? 

a. bony fish  

b. sea fish  

c. cartilaginous fish  

d. none of these 


Answer- bony fish


Que- The arrangement of ________ speaks of the division of labour within cell? 

a. Molecule  

b. Subatomic particles  

c. Atoms  

d. Organelles 


Answer- Organelles


Que- In which animal respiratory surface are found in more than one organ? 

a. birds  

b. human  

c. fish  

d. frog 


Answer- frog


Que- Communities are ________ collection of organisms? 

a. Static  

b. Dynamic  

c. May be static or dynamic  

d. None of these 


Answer- Dynamic


Que- The heart is enclosed in a membrane called________? 

a. pleura  

b. pericardium  

c. peritoneum  

d. epithelium 


Answer- pericardium


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

a. 3500000.0 

b. 35000.0 

c. 2500000.0 

d. 2.5E7 


Answer- 2500000.0


Que- From right ventricle blood is pushed into? 

a. pulmonary trunk  

b. brain  

c. aorta  

d. body 


Answer- pulmonary trunk

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