Cellular Structures and DNA Quiz

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What is the actual diameter of a cell if its image is 0.8 mm in diameter when viewed through lenses E and O, which are marked 10× and 40× respectively?

0.002 mm (correct)

2 mm

20 mm

0.2 mm

What is the function of the cell membrane?

Brings the image into focus using the coarse focus wheel

Controls entry and exit of molecules (correct)

Protein synthesis

Protects the lens

What stain was used on the animal cell sample?

Cotton wool bud

Iodine

Methylene Blue (correct)

Water

Which category of organisms has a nucleus and membrane-bound organelles?

Eukaryotes Signup and view all the answers

What is the main difference between prokaryotic and eukaryotic cells?

Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not Signup and view all the answers

Which type of microscope uses accelerated electrons to provide greater resolution and magnification?

Scanning Electron Microscope (SEM) Signup and view all the answers

Which type of microscope has a higher resolution?

Electron microscope Signup and view all the answers

What is the function of the diaphragm in a light microscope?

To control the amount of light passing to the slide Signup and view all the answers

Which cell component is responsible for holding in cell contents and controlling the entry and exit of molecules?

Cell membrane Signup and view all the answers

What is the function of the nucleus in a cell?

To control all cell activities Signup and view all the answers

Which organelle is responsible for producing almost all the energy required by the cell?

Mitochondria Signup and view all the answers

What is the function of ribosomes in a cell?

Protein synthesis Signup and view all the answers

What is the function of the cell wall in a plant cell?

Controls cell growth and shape Signup and view all the answers

What is the function of vacuoles in a cell?

Temporary storage of food, water, and excretory products Signup and view all the answers

Which structures are responsible for protein synthesis in the cell?

Ribosomes Signup and view all the answers

What is the function of mitochondria in the cell?

Producing energy Signup and view all the answers

What is the function of chloroplasts in plant cells?

Making carbohydrates Signup and view all the answers

What is the function of the cell wall in plant cells?

Gives strength and protection Signup and view all the answers