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Worksheetschapter 2 cell as a unit of life
Total questions: 20
Worksheet time: 10mins
What is cell ?
Living organism
A brick
Basic unit of life
component that combine together to form an organ
Cells can undergo x process to form new cells and replace damaged cells. What is x ?
respiration
Division
photosynthesis
Homeostasis
What are the components that exist in animal cells ?
Nucleus, cytoplasm, mitochondria, cell membrane
Cell membrane, cell wall, cytoplasm, mitochondria
Chloroplast, nucleus, cell wall, mitochondria
Mitochondria, vacuole, cell membrane, nucleus
Which of the following statements is correct ?
Animal cells has vacuole
Plant cells didn't have cell membrane
Chloroplast exist in plant cells
Nucleus only exist in animal cells
Which of the following is the function of mitochondria ?
Medium where chemical reactions occur
Controls the flow of material in and out of the cell
Produces energy for reactions
Absorbs light energy for the process of photosynthesis
Which of the following components in cell controls all activities in the cell and contains chromosomes consisting of DNA ?
Cell membrane
Nucleus
Mitochondria
Cell wall
Which of the following are the unicellular organisms ? (answer can be more than one)
Paramecium
Amoeba
Hydra
Euglena
Spirogyra
What is the function of Epithelium cell ?
Send information (impulse)
Protects the surface layer of the skin and internal organs
Transport oxygen
Destroy bacteria
What is the function of Guard cells ?
Reduces the water loss and enable the gaseous exchange
Control the size of the stoma (leaf pore)
Contain a large amount of chloroplasts for photosynthesis
Absorb water and mineral salts from the soil
Chloroplast located in the y to carry out photosynthesis. What is y ?
Palisade cell
Guard cell
Root hair cell
Epidermal cell
Which of the following is the correct sequence of the cell organisation ?
Organ - tissue - system - organism - cell
Tissue - cell - organ - system - organism
Cell - tissue - organ - system - organism
What is the function of lymphatic system ?
Break down complex food into simpler form
Protect the body from infections of bacteria, virus and others
Removes excretory waste from the body
Carries oxygen, nutrients and hormones to all parts of the body
Carries information from the brain to the entire body in the form of impulse
Plant make their own food through ?
Respiration
Photosynthesis
Why the leaf must be dipped into boiling water ?
To change the colour of the leaf
To break the cell wall
To extract out chlorophyll
To detect the presence of starch
What are the products of photosynthesis ?
Oxygen
Carbon dioxide
Starch
Chlorophyll
What are the product of respiration ?
Carbon dioxide, water and energy
Carbon dioxide, oxygen and water
Glucose, oxygen and carbon dioxide
Water, energy and glucose
Cells with the same function combine to form a
organ
tissue
system
organism
A few organs with related functions that work together for a specific function forms a
cell
tissue
organism
system
What type of human body system shown in the diagram?
Respiratory system
Digestive system
Muscular system
Nervous system
State reasons why photosynthesis is important.
supplies oxygen to animals
Supplies energy to animals
Removes carbon dioxide from the air
removes oxygen from air
