Biology Concepts Quiz for Grade 11

What is the basic unit of life in all living organisms?

• Tissue

• Cell

• Organ

• Organism

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Which organelle is responsible for photosynthesis in plant cells?

• Mitochondria

• Chloroplast

• Nucleus

• Ribosome

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What is the primary function of cellular respiration?

• To produce glucose

• To generate ATP

• To store energy

• To synthesize proteins

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Which molecule carries the genetic code from DNA to the ribosome for protein synthesis?

• tRNA

• mRNA

• rRNA

• DNA

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During which phase of the cell cycle does DNA replication occur?

• G1 phase

• S phase

• G2 phase

• M phase

Which structure is found in plant cells but not in animal cells?

• Cell membrane

• Cell wall

• Nucleus

• Mitochondria

What is the process by which water moves from the Earth's surface to the atmosphere?

• Precipitation

• Evaporation

• Condensation

• Transpiration

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Which process converts atmospheric nitrogen into a form usable by plants?

• Nitrification

• Nitrogen fixation

• Denitrification

• Ammonification

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In a food chain, which organism is typically at the top?

• Producer

• Primary consumer

• Secondary consumer

• Apex predator

What is the role of enzymes in biological reactions?

• To slow down reactions

• To act as a catalyst

• To provide energy

• To change the products

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