chapter 1 - animal & plant cells, cell division, etc.

Question 1

what is a cytoplasm?

Answer 1

a jelly-like material that contains dissolved nutrients, salts and structures called organelles.

Question 2

what is a nucleus?

Answer 2

contains genetic material including DNA, which controls the cell’s activities.

Question 3

what is a cell membrane?

Answer 3

its structure is permeable to some substances but not to others. it therefore controls the movement of substances in and out of the cell.

Question 4

what is mitochondria?

Answer 4

organelles that contain the enzymes for respiration, and where most energy is released in respiration.

Question 5

what is ribosomes?

Answer 5

tiny structures where proteins synthesis occurs.

Question 6

what is chloroplast?

Answer 6

organelles that contains the green pigment, chlorophyll, which absorbs light energy for photosynthesis.

Question 7

what is cell wall?

Answer 7

made from cellulose fibres and strengthens the cell and supports the plant.

Question 8

what is permanent vacuole?

Answer 8

filled with cell sap to help keep the cell turgid.