Gr 9 NATURAL SCIENCES: CH 1.1 Difference between plant and animal cells
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Questions and Answers

What is the primary component of the plant cell wall?

  • Cellulose (correct)
  • Peptidoglycan
  • Chlorophyll
  • Chitin

What is the function of chloroplasts in plant cells?

  • Structural support
  • Regulation of the internal environment
  • Mechanical protection
  • Photosynthesis (correct)

Which of the following organisms have cell walls composed of peptidoglycan?

  • Algae
  • Plants
  • Bacteria (correct)
  • Fungi

What is the function of the cell wall in plant cells?

<p>Protection and structural support (D)</p> Signup and view all the answers

Which organelle is responsible for regulating the entry and exit of substances in plant cells?

<p>Cell wall (A)</p> Signup and view all the answers

What is the name of the stacked structures within chloroplasts where the light-dependent reactions of photosynthesis occur?

<p>Grana (B)</p> Signup and view all the answers

What is the green pigment found in chloroplasts?

<p>Chlorophyll (C)</p> Signup and view all the answers

What is the primary function of the stroma in a plant cell?

<p>To convert carbon dioxide into glucose (B)</p> Signup and view all the answers

What is the main function of chlorophyll in plant cells?

<p>To capture light energy for photosynthesis (D)</p> Signup and view all the answers

What is the primary function of a vacuole in a plant cell?

<p>To store nutrients, waste products, and other substances (D)</p> Signup and view all the answers

What is the main difference between the shape and structure of plant cells and animal cells?

<p>Plant cells have a cell wall, while animal cells lack a cell wall (A)</p> Signup and view all the answers

What is the main function of centrioles in animal cells?

<p>To organize the mitotic spindle during cell division (C)</p> Signup and view all the answers

What is the primary function of plasmodesmata in plant cells?

<p>To facilitate intercellular communication (A)</p> Signup and view all the answers

What is the main function of lysosomes in animal cells?

<p>To break down waste materials and debris (C)</p> Signup and view all the answers

How do plant cells and animal cells differ in their energy storage?

<p>Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen (A)</p> Signup and view all the answers

What is the main purpose of the cell wall in plant cells?

<p>To provide structural support and protection (D)</p> Signup and view all the answers

Which type of cells have chloroplasts?

<p>Only plant cells and certain algae (D)</p> Signup and view all the answers

What is the main difference between the cell walls of plant cells and bacterial cells?

<p>The composition of the cell wall (B)</p> Signup and view all the answers

What is the function of thylakoids in chloroplasts?

<p>To facilitate the light-dependent reactions of photosynthesis (B)</p> Signup and view all the answers

What is the purpose of chlorophyll in chloroplasts?

<p>To absorb light energy for photosynthesis (B)</p> Signup and view all the answers

Why are cell walls essential for plant cells?

<p>To provide structural support and protection, allowing plants to stand upright (C)</p> Signup and view all the answers

What is the relationship between the cell wall and the cell membrane in plant cells?

<p>The cell wall works in conjunction with the cell membrane (A)</p> Signup and view all the answers

What is the primary function of the Calvin cycle in plant cells?

<p>To convert carbon dioxide into glucose (C)</p> Signup and view all the answers

What is the main function of the central vacuole in plant cells?

<p>To maintain turgor pressure (A)</p> Signup and view all the answers

What is the main difference between the vacuoles of plant cells and animal cells?

<p>Function and structure (B)</p> Signup and view all the answers

What is the function of peroxisomes in plant cells?

<p>To break down fatty acids and detoxify harmful substances (C)</p> Signup and view all the answers

What is the primary function of chloroplasts in plant cells?

<p>To convert light energy into chemical energy (B)</p> Signup and view all the answers

What is the main function of plasmodesmata in plant cells?

<p>To facilitate intercellular communication and transport (B)</p> Signup and view all the answers

What is the primary function of lysosomes in animal cells?

<p>To break down waste materials and cellular debris (A)</p> Signup and view all the answers

What is the primary function of starch in plant cells?

<p>To store energy (D)</p> Signup and view all the answers

What is the primary role of the cell wall in conjunction with the cell membrane in plant cells?

<p>To regulate the internal environment of the cell (D)</p> Signup and view all the answers

What is unique about the composition of plant cell walls compared to other organisms?

<p>They are made of cellulose (D)</p> Signup and view all the answers

What is the primary function of thylakoids in chloroplasts?

<p>To convert light energy into chemical energy (C)</p> Signup and view all the answers

Which of the following is a characteristic shared by both plant and animal cells?

<p>Presence of a cell membrane (A)</p> Signup and view all the answers

What is the primary reason why plant cells can grow to great heights?

<p>Due to the presence of a cell wall (A)</p> Signup and view all the answers

What is the primary function of grana in chloroplasts?

<p>To convert light energy into chemical energy (D)</p> Signup and view all the answers

What is the primary difference between the functions of plant and animal cells?

<p>Plant cells photosynthesize, while animal cells do not (C)</p> Signup and view all the answers

What is the primary function of the stroma in a plant cell?

<p>To convert carbon dioxide into glucose (B)</p> Signup and view all the answers

Which of the following is a function of the central vacuole in a plant cell?

<p>To maintain turgor pressure (A)</p> Signup and view all the answers

What is the main difference between the shape and structure of plant cells and animal cells?

<p>Plant cells have a fixed shape, while animal cells have an irregular shape (B)</p> Signup and view all the answers

Which of the following organelles is involved in the glyoxylate cycle in plant cells?

<p>Peroxisomes (C)</p> Signup and view all the answers

What is the primary function of plasmodesmata in plant cells?

<p>To allow communication and transport between adjacent plant cells (B)</p> Signup and view all the answers

Which of the following is a characteristic of vacuoles in plant cells?

<p>They are large and membrane-bound (B)</p> Signup and view all the answers

What is the primary function of centrioles in animal cells?

<p>To organize the mitotic spindle during cell division (B)</p> Signup and view all the answers

Which of the following is a difference between the energy storage of plant cells and animal cells?

<p>Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen (A)</p> Signup and view all the answers

What is the primary reason why plant cells have both a cell wall and a cell membrane, whereas animal cells only have a cell membrane?

<p>To maintain the structural integrity and support necessary for upright growth. (A)</p> Signup and view all the answers

What is the primary function of the stacked thylakoids within chloroplasts?

<p>To increase the surface area for light absorption during photosynthesis. (C)</p> Signup and view all the answers

What is the key difference between the cell walls of plant cells and those of bacteria or fungi?

<p>Plant cell walls contain cellulose, whereas bacterial and fungal cell walls contain peptidoglycan and chitin, respectively. (A)</p> Signup and view all the answers

What is the primary function of the chloroplast stroma in plant cells?

<p>To convert CO2 into glucose during the Calvin cycle. (D)</p> Signup and view all the answers

Why do plant cells require a rigid cell wall to maintain their shape and structure?

<p>To withstand the high turgor pressure generated by water uptake. (C)</p> Signup and view all the answers

What is the primary function of the stroma in a plant cell?

<p>To convert carbon dioxide into glucose (D)</p> Signup and view all the answers

What is the main function of plasmodesmata in plant cells?

<p>To allow communication and transport between adjacent cells (D)</p> Signup and view all the answers

What is the primary difference between the energy storage in plant cells and animal cells?

<p>Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen (B)</p> Signup and view all the answers

What is the primary function of peroxisomes in plant cells?

<p>To break down fatty acids and detoxify harmful substances (D)</p> Signup and view all the answers

What is the main difference between the shape and structure of plant cells and animal cells?

<p>Plant cells have a rigid cell wall, while animal cells do not (C)</p> Signup and view all the answers

What is the main function of the cell wall in conjunction with the cell membrane in plant cells?

<p>To regulate the entry and exit of substances (C)</p> Signup and view all the answers

What is unique about the composition of plant cell walls compared to other organisms?

<p>They are made of cellulose (B)</p> Signup and view all the answers

What is the primary function of chloroplasts in plant cells?

<p>To convert light energy into chemical energy (D)</p> Signup and view all the answers

Why do plant cells require a rigid cell wall to maintain their shape and structure?

<p>To stand upright and grow to great heights (D)</p> Signup and view all the answers

What is the main function of the Calvin cycle in plant cells?

<p>To convert carbon dioxide into glucose (D)</p> Signup and view all the answers

What is the relationship between the thylakoids and the grana in chloroplasts?

<p>Thylakoids are stacked into grana (A)</p> Signup and view all the answers

What is the primary function of vacuoles in plant cells?

<p>To store and transport nutrients, waste products, and other substances (A)</p> Signup and view all the answers

What is the main difference between the structure of plant cells and animal cells?

<p>Plant cells have a cell wall, while animal cells do not (A)</p> Signup and view all the answers

What is the primary function of peroxisomes in plant cells?

<p>To break down fatty acids and detoxify harmful substances (D)</p> Signup and view all the answers

What is the main difference between the energy storage of plant cells and animal cells?

<p>Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen (B)</p> Signup and view all the answers

What is the primary function of stroma in a plant cell?

<p>To convert carbon dioxide into glucose (B)</p> Signup and view all the answers

What is the primary function of vacuoles in plant cells?

<p>To maintain turgor pressure and support the plant structure (D)</p> Signup and view all the answers

What is the main difference between the shape and structure of plant cells and animal cells?

<p>Plant cells have a rigid cell wall, while animal cells do not (B)</p> Signup and view all the answers

What is the primary function of peroxisomes in plant cells?

<p>To break down fatty acids and detoxify harmful substances (B)</p> Signup and view all the answers

What is the main difference between the functions of lysosomes in plant cells and animal cells?

<p>Lysosomes are responsible for breaking down waste materials in animal cells, but not in plant cells (D)</p> Signup and view all the answers

What is the main reason why plant cells have a cell wall?

<p>To provide structural support and protection (D)</p> Signup and view all the answers

Which organelle is responsible for converting light energy into chemical energy in plant cells?

<p>Chloroplasts (D)</p> Signup and view all the answers

What is the main difference between the cell walls of plant cells and those of bacteria or fungi?

<p>Plant cell walls are made of cellulose, while bacterial cell walls are made of peptidoglycan and fungal cell walls are made of chitin (B)</p> Signup and view all the answers

What is the function of the thylakoids in chloroplasts?

<p>To convert light energy into chemical energy (C)</p> Signup and view all the answers

What is the primary role of the cell wall in plant cells?

<p>To provide structural support and protection (D)</p> Signup and view all the answers

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