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WorksheetsScience Exploration
Total questions: 10
Worksheet time: 5mins
What is the basic structural and functional unit of all living organisms?
atom
cell
organ
molecule
In which organelle does photosynthesis occur?
endoplasmic reticulum
nucleus
chloroplasts
mitochondria
What are the three main layers of the Earth?
crust, core, atmosphere
crust, mantle, core
lithosphere, asthenosphere, mesosphere
mantle, crust, atmosphere
What is the process by which plants make their food using sunlight?
Respiration
Photosynthesis
Hydroponics
Chloroplast
Which organelle is known as the powerhouse of the cell?
Mitochondria
Endoplasmic reticulum
Ribosome
Nucleus
What type of reaction occurs when two or more substances combine to form a new substance?
Nuclear reaction
Chemical reaction
Biological reaction
Physical reaction
Which layer of the Earth is made up of solid iron and nickel?
Outer core
Mantle
Crust
Inner core
What is the chemical equation for photosynthesis?
6CO2 + 6H2O + light energy -> C6H12O6 + 6O2
CO2 + H2O + light energy -> CH2O + O2
6CO2 + 6H2O -> C6H12O6 + 6O2
6CO2 + 6H2O + ATP -> C6H12O6 + 6O2
What is the function of the cell membrane?
Regulates cell division
Controls the movement of substances in and out of the cell.
Provides energy to the cell
Stores genetic information
What is the role of enzymes in chemical reactions?
Enzymes have no effect on the rate of chemical reactions.
Enzymes change the chemical composition of reactants in reactions.
Enzymes inhibit chemical reactions by increasing activation energy.
Enzymes increase the rate of chemical reactions by lowering activation energy.
