75 Questions
What is the primary component of the plant cell wall?
Cellulose
What is the function of chloroplasts in plant cells?
Photosynthesis
Which of the following organisms have cell walls composed of peptidoglycan?
Bacteria
What is the function of the cell wall in plant cells?
Protection and structural support
Which organelle is responsible for regulating the entry and exit of substances in plant cells?
Cell wall
What is the name of the stacked structures within chloroplasts where the light-dependent reactions of photosynthesis occur?
Grana
What is the green pigment found in chloroplasts?
Chlorophyll
What is the primary function of the stroma in a plant cell?
To convert carbon dioxide into glucose
What is the main function of chlorophyll in plant cells?
To capture light energy for photosynthesis
What is the primary function of a vacuole in a plant cell?
To store nutrients, waste products, and other substances
What is the main difference between the shape and structure of plant cells and animal cells?
Plant cells have a cell wall, while animal cells lack a cell wall
What is the main function of centrioles in animal cells?
To organize the mitotic spindle during cell division
What is the primary function of plasmodesmata in plant cells?
To facilitate intercellular communication
What is the main function of lysosomes in animal cells?
To break down waste materials and debris
How do plant cells and animal cells differ in their energy storage?
Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen
What is the main purpose of the cell wall in plant cells?
To provide structural support and protection
Which type of cells have chloroplasts?
Only plant cells and certain algae
What is the main difference between the cell walls of plant cells and bacterial cells?
The composition of the cell wall
What is the function of thylakoids in chloroplasts?
To facilitate the light-dependent reactions of photosynthesis
What is the purpose of chlorophyll in chloroplasts?
To absorb light energy for photosynthesis
Why are cell walls essential for plant cells?
To provide structural support and protection, allowing plants to stand upright
What is the relationship between the cell wall and the cell membrane in plant cells?
The cell wall works in conjunction with the cell membrane
What is the primary function of the Calvin cycle in plant cells?
To convert carbon dioxide into glucose
What is the main function of the central vacuole in plant cells?
To maintain turgor pressure
What is the main difference between the vacuoles of plant cells and animal cells?
Function and structure
What is the function of peroxisomes in plant cells?
To break down fatty acids and detoxify harmful substances
What is the primary function of chloroplasts in plant cells?
To convert light energy into chemical energy
What is the main function of plasmodesmata in plant cells?
To facilitate intercellular communication and transport
What is the primary function of lysosomes in animal cells?
To break down waste materials and cellular debris
What is the primary function of starch in plant cells?
To store energy
What is the primary role of the cell wall in conjunction with the cell membrane in plant cells?
To regulate the internal environment of the cell
What is unique about the composition of plant cell walls compared to other organisms?
They are made of cellulose
What is the primary function of thylakoids in chloroplasts?
To convert light energy into chemical energy
Which of the following is a characteristic shared by both plant and animal cells?
Presence of a cell membrane
What is the primary reason why plant cells can grow to great heights?
Due to the presence of a cell wall
What is the primary function of grana in chloroplasts?
To convert light energy into chemical energy
What is the primary difference between the functions of plant and animal cells?
Plant cells photosynthesize, while animal cells do not
What is the primary function of the stroma in a plant cell?
To convert carbon dioxide into glucose
Which of the following is a function of the central vacuole in a plant cell?
To maintain turgor pressure
What is the main difference between the shape and structure of plant cells and animal cells?
Plant cells have a fixed shape, while animal cells have an irregular shape
Which of the following organelles is involved in the glyoxylate cycle in plant cells?
Peroxisomes
What is the primary function of plasmodesmata in plant cells?
To allow communication and transport between adjacent plant cells
Which of the following is a characteristic of vacuoles in plant cells?
They are large and membrane-bound
What is the primary function of centrioles in animal cells?
To organize the mitotic spindle during cell division
Which of the following is a difference between the energy storage of plant cells and animal cells?
Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen
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?
To maintain the structural integrity and support necessary for upright growth.
What is the primary function of the stacked thylakoids within chloroplasts?
To increase the surface area for light absorption during photosynthesis.
What is the key difference between the cell walls of plant cells and those of bacteria or fungi?
Plant cell walls contain cellulose, whereas bacterial and fungal cell walls contain peptidoglycan and chitin, respectively.
What is the primary function of the chloroplast stroma in plant cells?
To convert CO2 into glucose during the Calvin cycle.
Why do plant cells require a rigid cell wall to maintain their shape and structure?
To withstand the high turgor pressure generated by water uptake.
What is the primary function of the stroma in a plant cell?
To convert carbon dioxide into glucose
What is the main function of plasmodesmata in plant cells?
To allow communication and transport between adjacent cells
What is the primary difference between the energy storage in plant cells and animal cells?
Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen
What is the primary function of peroxisomes in plant cells?
To break down fatty acids and detoxify harmful substances
What is the main difference between the shape and structure of plant cells and animal cells?
Plant cells have a rigid cell wall, while animal cells do not
What is the main function of the cell wall in conjunction with the cell membrane in plant cells?
To regulate the entry and exit of substances
What is unique about the composition of plant cell walls compared to other organisms?
They are made of cellulose
What is the primary function of chloroplasts in plant cells?
To convert light energy into chemical energy
Why do plant cells require a rigid cell wall to maintain their shape and structure?
To stand upright and grow to great heights
What is the main function of the Calvin cycle in plant cells?
To convert carbon dioxide into glucose
What is the relationship between the thylakoids and the grana in chloroplasts?
Thylakoids are stacked into grana
What is the primary function of vacuoles in plant cells?
To store and transport nutrients, waste products, and other substances
What is the main difference between the structure of plant cells and animal cells?
Plant cells have a cell wall, while animal cells do not
What is the primary function of peroxisomes in plant cells?
To break down fatty acids and detoxify harmful substances
What is the main difference between the energy storage of plant cells and animal cells?
Plant cells store energy in the form of starch, while animal cells store energy in the form of glycogen
What is the primary function of stroma in a plant cell?
To convert carbon dioxide into glucose
What is the primary function of vacuoles in plant cells?
To maintain turgor pressure and support the plant structure
What is the main difference between the shape and structure of plant cells and animal cells?
Plant cells have a rigid cell wall, while animal cells do not
What is the primary function of peroxisomes in plant cells?
To break down fatty acids and detoxify harmful substances
What is the main difference between the functions of lysosomes in plant cells and animal cells?
Lysosomes are responsible for breaking down waste materials in animal cells, but not in plant cells
What is the main reason why plant cells have a cell wall?
To provide structural support and protection
Which organelle is responsible for converting light energy into chemical energy in plant cells?
Chloroplasts
What is the main difference between the cell walls of plant cells and those of bacteria or fungi?
Plant cell walls are made of cellulose, while bacterial cell walls are made of peptidoglycan and fungal cell walls are made of chitin
What is the function of the thylakoids in chloroplasts?
To convert light energy into chemical energy
What is the primary role of the cell wall in plant cells?
To provide structural support and protection
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