cell quiz class 9th

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