ultrastructure of plant cells

Question 1

Structure of cell wall

Answer 1

• A rigid structure that surrounds plant cells. It’s made from the carbohydrate cellulose.
• Freely permeable so substances can pass into and out the cell through the cell wall.

Question 2

Function of cell wall

Answer 2

• Supports plant cell.

Question 3

What is the vacuole?

Answer 3

• Membrane lined sacs in the cytoplasm containing cell sap.

Question 4

Structure of chloroplast.

Answer 4

• A small, flattened structure found in plant cells.
• It’s surrounded by double membrane, and also has membranes inside called thylakoid membrane. These membranes are stacked up in some parts of the chloroplast to form grana.
• Grana are linked together by lamellae - thin,flat pieces of thylakoid membrane.

Question 5

Function of chloroplast

Answer 5

• Site where photosynthesis takes place.
  -Some parts of photosynthesis happens in grana and other parts happen in stroma.

Question 6

What is stroma?

Answer 6

A thick fluid found in chloroplasts.

Question 7

What links grana in chloroplast together

Answer 7

Lamellae - thin,flat pieces of thylakoid membrane.