GRADE 8 Science – The cell Quiz

Mitochondria are known as the 'powerhouse' of the cell because they are responsible for generating most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.

Vacuoles are responsible for storing materials such as water, salts, proteins, and carbohydrates. They are also involved in maintaining turgidity of the cell.

Ribosomes are responsible for protein synthesis in the cell. They link amino acids together in the order specified by messenger RNA (mRNA) molecules.

The nucleus acts as the control center of the cell as it contains genetic material (DNA) which directs the activities of the cell.

Lysosomes are responsible for breaking down waste materials in the cell through the process of digestion. They contain enzymes that break down proteins, nucleic acids, lipids, and carbohydrates.

Endoplasmic reticulum is known as the 'transport system' of the cell because it is involved in the production, processing, and transport of proteins and lipids.

Chloroplasts are responsible for photosynthesis in plant cells. They contain chlorophyll, a green pigment that captures sunlight and converts it into chemical energy.

The Golgi apparatus is responsible for modifying, sorting, and packaging proteins for secretion. It receives proteins from the endoplasmic reticulum and ships them to their final destination within or outside the cell.

The cell wall is responsible for providing structural support, protection, and rigidity to plant cells. It is composed of cellulose fibers and helps maintain the shape of the cell.

The cell membrane is responsible for regulating what enters and exits the cell. It is selectively permeable, allowing only certain substances to pass through.

Chloroplasts are responsible for converting light energy into sugars through photosynthesis. They contain chlorophyll, the pigment that captures light energy for the process.

The endoplasmic reticulum is responsible for detoxifying harmful substances in the cell. It contains enzymes that metabolize potentially harmful substances, making them less toxic.

Mitochondria are responsible for storing and releasing energy in the form of ATP. They are considered the 'powerhouses' of the cell due to their role in energy production.

Mitochondria are responsible for conducting cellular respiration in the cell, which involves converting nutrients into energy in the form of ATP.

Lysosomes are responsible for breaking down substances like old organelles and foreign substances through the process of digestion. They help maintain the health of the cell by removing waste materials.

The endoplasmic reticulum is responsible for producing lipids, steroids, and detoxifying substances in the cell. It consists of smooth and rough types, each with specific functions.

The cell membrane is responsible for maintaining the shape of the cell and controlling what enters and exits the cell. It is a selectively permeable barrier that surrounds the cell.

The Golgi apparatus is responsible for generating vesicles that transport molecules throughout the cell. It modifies, sorts, and packages proteins before shipping them to their final destination.

Vacuoles are responsible for maintaining cell turgidity and aiding in storage of materials. They can store water, salts, proteins, and carbohydrates, helping regulate cell shape and internal pressure.

Ribosomes are responsible for producing and assembling ribosomes in the cell. They are composed of RNA and proteins, functioning as the site of protein synthesis.

The Golgi apparatus is responsible for packaging and distributing proteins and lipids within the cell. It modifies, sorts, and packages molecules before sending them to their final destination.

Mitochondria are responsible for providing energy for the cell through cellular respiration. They convert nutrients into ATP, the primary source of energy for cellular processes.

The nucleus is responsible for maintaining genetic material (DNA) and controlling cell activities. It directs the synthesis of proteins, cell division, and other crucial cellular processes.

The endoplasmic reticulum is responsible for detoxifying drugs and other harmful substances in the liver cells. It contains enzymes that metabolize toxins and drugs, making them less harmful.

Mitochondria are responsible for converting food into energy through the process of cellular respiration. They generate ATP, which provides energy for the cell's metabolic activities.

Cells are the basic structural and functional unit of all living organisms. They carry out essential functions necessary for life.

The outer covering of a plant cell is called the cell wall. It provides support and protection to the cell.

Mitochondria are known as the powerhouse of the cell because they produce energy in the form of ATP through cellular respiration.

The genetic material of a cell is located in the nucleus. It contains the DNA which carries the instructions for the cell's functions.

Ribosomes are responsible for protein synthesis in a cell. They read the mRNA and assemble amino acids into proteins.

Cytoplasm is the fluid inside a cell where organelles are suspended. It helps transport materials within the cell.

Lysosomes are responsible for detoxifying harmful substances in a cell. They contain enzymes that break down waste materials.

The Golgi apparatus is responsible for packaging and distributing proteins in a cell. It modifies, sorts, and packages proteins for transport.

The nucleus is the control center of a cell that contains the genetic material (DNA). It regulates the cell's activities.

Chloroplasts in plant cells are responsible for photosynthesis. They contain chlorophyll which captures light energy for photosynthesis.