50 multiple-choice questions (MCQs): Biology as a Field of Study

Biology as a Field of Study – MCQs

The term “Biology” is derived from which two Greek words?
a) Bio + Graphos
b) Bios + Logos
c) Bios + Genos
d) Bio + Lexis
Who is a biologist?
a) A person who studies animals only
b) A person who studies the environment only
c) A specialist in biology
d) A person who studies only plants
Any living thing made up of cells is called a:
a) Tissue
b) Cell
c) Organism
d) Organ
Which of the following is not an importance of studying biology?
a) Understanding body functions
b) Managing the environment
c) Identifying disease-causing organisms
d) Building machines
Which career is based on biology?
a) Medicine
b) Veterinary science
c) Pharmacy
d) All of the above

What is a biology laboratory?
a) A classroom for drawing specimens
b) A space for biological experiments
c) A place for storing chemicals only
d) A store for books
Which of the following is not a quality of a biology laboratory?
a) Good ventilation
b) Shelves for storage
c) Windows blocked with curtains
d) Emergency exits
Why is good ventilation important in a biology lab?
a) To make it look bigger
b) To reduce harmful fumes
c) To reduce noise
d) To prevent accidents
A well-equipped biology laboratory should have access to:
a) Gas, electricity, and water
b) Books, charts, and chairs
c) Computers and printers
d) Windows and flowers
Which facility in the lab ensures quick evacuation in emergencies?
a) Gas taps
b) Emergency exits
c) Working benches
d) Storage shelves

Why should food not be kept in laboratory glassware?
a) It may spill easily
b) It may get dirty
c) It may cause contamination
d) It is too expensive
Which sign warns of the danger of electrocution?
a) Radioactive materials
b) Electric shock hazard
c) Flammable materials
d) Explosive substances
Which sign warns of fire risk?
a) Flammable materials
b) Laser radiation
c) Corrosive materials
d) No smoking
What does the “No Smoking” sign in a laboratory indicate?
a) Smoking is allowed outside
b) Smoking is prohibited in the area
c) Smoking reduces oxygen levels
d) Smoking is safe near gas
Which of the following materials can damage skin and metals?
a) Explosive
b) Flammable
c) Corrosive
d) Radioactive
A sign showing a triangle with an explosion indicates:
a) Flammable materials
b) Explosive substances
c) Electric shock hazard
d) Laser radiation
Why should electrical equipment be kept dry?
a) To avoid rust
b) To prevent electric shocks
c) To prevent fire
d) To save energy
Why should students not run or play in the lab?
a) To keep the lab quiet
b) To avoid accidents and injuries
c) To save time
d) To protect books
Why is long hair tied back in the lab?
a) To look neat
b) To prevent distraction
c) To avoid accidents with flames or equipment
d) To avoid blocking visibility
Which safety gear protects against chemical spills?
a) Apron
b) Lab coat
c) Goggles
d) All of the above

Which apparatus is used to magnify small organisms?
a) Thermometer
b) Microscope
c) Measuring cylinder
d) Mortar and pestle
Which tool is used for grinding and mixing substances?
a) Beaker
b) Mortar and pestle
c) Test tube
d) Dissecting kit
The correct instrument for measuring liquid temperature is:
a) Measuring cylinder
b) Beaker
c) Thermometer
d) Beam balance
Which apparatus is used for heating substances?
a) Bunsen burner
b) Mortar and pestle
c) Test tube
d) Microscope
Which of the following is a cutting tool used in dissection?
a) Scissors
b) Beaker
c) Thermometer
d) Hand lens
Which laboratory equipment is used to weigh objects?
a) Microscope
b) Beam balance
c) Thermometer
d) Hand lens
A hand lens is used to:
a) Measure volume
b) Weigh objects
c) Magnify objects
d) Heat substances
The correct apparatus for measuring liquid volume is:
a) Beaker
b) Thermometer
c) Measuring cylinder
d) Dissecting kit
What is the main use of a beaker?
a) To measure precise liquid volume
b) To magnify small objects
c) To mix and heat liquids
d) To cut specimens
Test tubes are mainly used for:
a) Heating liquids
b) Mixing and holding small samples
c) Measuring volumes accurately
d) Cutting specimens

A microscope is used for:
a) Drawing organisms
b) Heating specimens
c) Observing tiny organisms not visible to the naked eye
d) Cutting specimens
Which microscope is common in school labs?
a) Light microscope
b) Electron microscope
c) Compound microscope only
d) None of the above
The part of the microscope that magnifies the specimen is:
a) Stage
b) Objective lens
c) Arm
d) Base
Which knob brings the specimen into sharp focus?
a) Coarse adjustment
b) Fine adjustment
c) Nosepiece
d) Eyepiece
The stage of a microscope is used to:
a) Hold specimens and slides
b) Direct light to the mirror
c) Magnify objects
d) Support the microscope
Which part concentrates light onto the specimen?
a) Eyepiece
b) Condenser
c) Arm
d) Nosepiece
Which part controls the amount of light reaching the specimen?
a) Diaphragm
b) Eyepiece
c) Stage
d) Mirror
The base of the microscope provides:
a) Magnification
b) Stability
c) Light
d) Adjustment
Which part of the microscope should not be forced when adjusting?
a) Eyepiece
b) Stage
c) Coarse and fine knobs
d) Nosepiece
Which type of microscope uses electrons instead of light?
a) Light microscope
b) Electron microscope
c) Simple microscope
d) Magnifying glass

When carrying a microscope, hold it by:
a) Stage only
b) Nosepiece and base
c) Arm and base
d) Eyepiece and stage
Why should lenses be cleaned with lens tissue?
a) To keep them shiny
b) To avoid scratching the lens
c) To prevent rusting
d) To avoid dust only
Which of the following is avoided when handling a microscope?
a) Tilting the microscope
b) Cleaning with lens paper
c) Covering with a dust cover
d) Carrying with two hands
What is the field of view?
a) The entire microscope
b) The circular area seen through the eyepiece
c) The magnified image
d) The objective lens
Which knob should only be used with high power objective lens?
a) Coarse adjustment
b) Fine adjustment
c) Both knobs
d) None of the above
If a specimen measures 2 cm and the drawing is 6 cm, what is the magnification?
a) X2
b) X3
c) X6
d) X12
A microscope set at X10 eyepiece and X4 objective lens gives total magnification of:
a) X10
b) X14
c) X40
d) X400
Why should specimens be covered with a cover slip?
a) To make them visible
b) To prevent contamination and protect lenses
c) To magnify them further
d) To reduce light
Why should a microscope never be placed near the edge of a table?
a) To prevent falling and breaking
b) To avoid blocking light
c) To keep away from chemicals
d) To make space for books
The correct way to store a microscope after use is:
a) Leave it uncovered
b) Store with high power lens in place
c) Clean, cover, and place safely
d) Place it on the floor