Organelle Functions
Where do most of the chemical reactions happen inside a cell?
A) Nucleus
B) Cell membrane
C) Cytoplasm
D) Mitochondria
C) Cytoplasm
What is the main function of the cell membrane?
A) Storing genetic material
B) Giving rigid outer support
C) Releasing energy for movement
D) Controlling entry and exit
D) Controlling entry and exit
Which of these structures is found in plant cells but NEVER in animal cells?
A) Mitochondria
B) Nucleus
C) Cell membrane
D) Cell wall
D) Cell wall
Muscle cells need lots of energy to move. Which organelle will they have in huge numbers?
A) Chloroplasts
B) Permanent vacuoles
C) Cell walls
D) Mitochondria
D) Mitochondria
Which structure stores the genetic information needed to control the cell?
A) Nucleus
B) Vacuole
C) Cytoplasm
D) Cell wall
A) Nucleus
Which cell structure provides strength and support to plant cells?
A) Cell wall
B) Nucleus
C) Cytoplasm
D) Cell membrane
A) Cell wall
Which organelle is present in BOTH plant and animal cells?
A) Chloroplast
B) Permanent vacuole
C) Cytoplasm
D) Cell wall
C) Cytoplasm
A student says "Animal cells have a cell wall to keep them firm." Why are they wrong?
A) Animal cells have a wall made of sugar.
B) Only plant cells possess cellulose cell walls.
C) Animal cell walls are located in the nucleus.
D) Animal cells use chloroplasts for strength.
B) Only plant cells possess cellulose cell walls.
Which organelle acts as the site of aerobic respiration to release energy?
A) Chloroplast
B) Mitochondria
C) Cytoplasm
D) Vacuole
B) Mitochondria
What substance enters a cell through the cell membrane to be used in respiration?
A) Carbon dioxide
B) Oxygen
C) Chlorophyll
D) Cellulose
B) Oxygen
How do the overall shapes of plant and animal cells generally compare?
A) Plants are fixed/rigid; animals are irregular.
B) Plants are irregular; animals are rigid.
C) Both plant and animal cells are perfectly round.
D) Both plant and animal cells are rectangular.
A) Plants are fixed/rigid; animals are irregular.
What would happen to a cell if its cytoplasm was completely removed?
A) Essential chemical reactions could not occur.
B) The cell would instantly form a cell wall.
C) The nucleus would start absorbing sunlight.
D) The membrane would stop storing sugar.
A) Essential chemical reactions could not occur.
Where are dissolved sugars and cell sap stored in a plant cell?
A) Mitochondria
B) Cell membrane
C) Permanent vacuole
D) Chloroplast
C) Permanent vacuole
Why do plant cells have a cell wall made of cellulose?
A) To control chemical reaction rates
B) To stop the cell bursting in water
C) To store extra genetic material
D) To capture sunlight for photosynthesis
B) To stop the cell bursting in water
Why don't underground plant root cells contain chloroplasts?
A) They use cell walls for energy instead.
B) They do not receive any light underground.
C) They store all their energy in the nucleus.
D) They are protected by a thick membrane.
B) They do not receive any light underground.
If a plant cell loses too much water from its vacuole, what happens to the cell?
A) It bursts due to excessive pressure.
B) It stops containing any genetic material.
C) It loses its firmness and becomes soft.
D) It converts all its cytoplasm into sugar.
C) It loses its firmness and becomes soft.
Which organelle absorbs light using chlorophyll to carry out photosynthesis?
A) Cytoplasm
B) Chloroplast
C) Vacuole
D) Nucleus
B) Chloroplast
Which statement correctly describes the cell membrane in animal cells?
A) It is a rigid layer made of cellulose.
B) It is a flexible barrier around the cell.
C) It is a thick wall that stores cell sap.
D) It is a green structure absorbing light.
B) It is a flexible barrier around the cell.
Which organelle combination is found exclusively in plant cells?
A) Cytoplasm, nucleus, cell membrane
B) Cell wall, chloroplast, vacuole
C) Mitochondria, nucleus, cytoplasm
D) Cell membrane, vacuole, nucleus
B) Cell wall, chloroplast, vacuole
What waste product leaves the cell through the cell membrane during respiration?
A) Carbon dioxide
B) Glucose
C) Oxygen
D) Cellulose
A) Carbon dioxide