Worksheetscell quiz class 9th
Total questions: 20
Worksheet time: 10mins
What is the basic structural and functional unit of life?
cell
molecule
organism
atom
Which organelle is known as the powerhouse of the cell?
lysosomes
mitochondria
nucleus
ribosomes
What is the function of the cell membrane?
Regulates cell division
Provides energy to the cell
Stores genetic information
Controls the movement of substances in and out of the cell.
What is the process by which cells divide and reproduce?
Cell multiplication
Cell subtraction
Cell division
Cell addition
Which organelle is responsible for protein synthesis?
Golgi apparatus
Endoplasmic reticulum
Ribosome
Mitochondria
What is the biological term for the process of cells converting glucose into energy?
Cellular respiration
Protein synthesis
Cell division
Photosynthesis
What is the difference between mitosis and meiosis?
Mitosis results in genetically identical daughter cells, while meiosis results in genetically different daughter cells
Mitosis occurs in animals while meiosis occurs in plants
The difference is in the color of the chromosomes
The main difference between mitosis and meiosis is the number of daughter cells produced and the number of chromosomes in each daughter cell.
What is the main function of neurons in the body?
Producing hormones
Regulating body temperature
Digesting food
Transmitting information
Describe the structure of a nerve cell.
The cell body of a nerve cell is called an axon.
A nerve cell consists of a cell body (soma), dendrites, and an axon.
A nerve cell has two axons and no dendrites.
Nerve cells do not have a cell body.
What is the role of the nucleus in a cell?
Energy production within the cell
Transporting proteins within the cell
Control center of the cell, containing DNA and regulating gene expression.
Regulating cell membrane permeability
Which organelle is responsible for storing water, food, and waste in a cell?
Mitochondria
Nucleus
Endoplasmic reticulum
Vacuole
What are the stages of mitosis?
Prophase, Metaphase, Anaphase, Telophase, Interphase
Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
Prophase, Prometaphase, Metaphase, Anaphase, Telophase
Interphase, Metaphase, Cytokinesis, Anaphase, Telophase
How does meiosis differ from mitosis?
Meiosis results in haploid cells, while mitosis results in diploid cells.
Meiosis involves one cell division, while mitosis involves two cell divisions.
Meiosis occurs in somatic cells, while mitosis occurs in gametes.
Meiosis results in diploid cells, while mitosis results in haploid cells.
What is the function of the Golgi apparatus in a cell?
Stores genetic material
Regulates cell division
Processes, sorts, and packages proteins and lipids
Produces energy for the cell
What is the importance of the cell wall in plant cells?
The cell wall is responsible for photosynthesis in plant cells.
The cell wall stores excess water in plant cells.
The cell wall is important in plant cells for structural support and protection.
The cell wall helps in cell communication in plant cells.
Describe the structure and function of the mitochondria.
Mitochondria are single-membrane-bound organelles responsible for photosynthesis.
Mitochondria are part of the endoplasmic reticulum.
Mitochondria are double-membrane-bound organelles responsible for producing ATP through cellular respiration.
Mitochondria have no specific function within the cell.
What is the role of lysosomes in a cell?
Lysosomes play a key role in cellular waste disposal and defense against pathogens.
Lysosomes are responsible for energy production in the cell.
Lysosomes regulate the cell's internal temperature.
Lysosomes aid in cell division and replication.
Explain the significance of the endoplasmic reticulum in protein synthesis.
The endoplasmic reticulum is significant in protein synthesis as it provides a platform for ribosomes to synthesize proteins and assists in folding and modifying them.
The endoplasmic reticulum is responsible for breaking down proteins during synthesis.
The endoplasmic reticulum plays no role in protein synthesis.
Proteins are synthesized in the endoplasmic reticulum without any assistance.
How do nerve cells transmit signals in the body?
Via mechanical vibrations
Through electrical impulses called action potentials
Through chemical reactions
By releasing hormones
What is the function of the Golgi apparatus in a cell?
Stores genetic material
Regulates cell division
Processes, sorts, and packages proteins and lipids
Produces energy for the cell
