Homeostasis and Cells Quiz Gr.9

What is homeostasis?

• The ability to grow

• The ability to maintain internal conditions constant

• The ability to reproduce

• The ability to respond to the environment

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How do unicellular organisms maintain homeostasis?

• By specializing for different tasks

• By communicating with other cells

• By growing, responding to the environment, transforming energy, and reproducing

• By forming tissues

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What role do yeasts play in the ecosystem?

• They produce oxygen

• They break down complex nutrients

• They are decomposers

• They are primary producers

What is cell specialization?

• The ability of cells to reproduce

• The ability of cells to communicate

• The process of cells dividing

• The process where cells become specialized for particular tasks

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What is a tissue?

• An organ system

• A single cell

• A group of similar cells performing a specific function

• A type of organ

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What do red blood cells do?

• Carry oxygen and release CO2

• Carry nutrients

• Help in digestion

• Fight infections

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What is the function of chloroplasts in plant cells?

• To perform photosynthesis

• To store water

• To transport nutrients

• To provide structural support

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What is an organ system?

• A group of similar cells

• A group of organs working together

• A single organ

• A type of tissue

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How do cells communicate in a multicellular organism?

• By dividing rapidly

• By physical contact

• By chemical signals

• Through electrical signals

What is the role of receptors in cellular communication?

• To divide cells

• To transport nutrients

• To bind signaling molecules

• To produce energy