End of Term 3

What is the primary role of mitochondria in cellular activities?

• To provide structural support to the cell

• To control the movement of substances in and out of the cell

• To convert nutrients into energy, which the cell can use.

• To store the cell's hereditary material

What are eukaryotic cells?

• Cells that possess a well-defined nucleus
• Cells that perform specific functions within the cell
• Simple, single-celled organisms that lack a nucleus and other membrane-bound organelles
• More complex cells found in plants, animals, fungi, and protists

What is the main function of a microscope in cell biology?

• To visualize cellular structures
• To illuminate a specimen
• To magnify tiny objects
• To enhance the contrast of cellular structures

What is the purpose of specialised cell structures and organelles?

• To make cells smaller in size
• To make cells more complex
• To provide support and protection to cells
• To make cells larger in size

Which type of microscope offers higher resolution and magnification?

• Scanning electron microscope
• Transmission electron microscope
• Light microscope
• Electron microscope

What is the maximum magnification achievable by light microscopes?

• 100 times
• 500 times
• 2000 times
• 1000 times

How do electron microscopes visualize specimens?

• Using staining techniques
• Using a beam of electrons
• Using visible light
• Using a combination of lenses

What is the purpose of cell staining in microscopy?

• To visualize cellular structures
• To enhance the contrast of cellular structures
• To magnify cellular structures
• To illuminate a specimen

What is the function of a cell membrane?

• To carry the instructions for cellular activities
• To perform specific functions within the cell
• To house the genetic material
• To separate internal components from the external environment

What are prokaryotic cells?

• More complex cells found in plants, animals, fungi, and protists
• Cells that perform specific functions within the cell
• Simple, single-celled organisms that lack a nucleus and other membrane-bound organelles
• Cells that possess a well-defined nucleus