2b Cell Structure

Question 1

Define and describe: nucleus A+P

Answer 1

Organelle which controls the activities of the cell
Contains the genetic material of the cell (chromosomes)

Question 2

Define and describe: cytoplasm A+P

Answer 2

Jelly like substance
About 70% water and has many substances dissolved in it
Contains enzymes which catalyse chemical reactions that occur here

Question 3

Define and describe: cell membrane A+P

Answer 3

For s the boundary of the cell, control movement of substances in and out of cell
Flexible, can bend and fuse

Question 4

Define and describe: cell wall P

Answer 4

Structure found outside the cell surface membrane that strengthens the cell and gives it support
Made of carbohydrate called cellulose

Question 5

Define and describe: mitochondria A+P

Answer 5

This organelle is the site of cell aerobic respiration- where energy is released from glucose.

Question 6

Define and describe: chloroplasts P

Answer 6

Found in all green parts of plant.
Site of photosynthesis
Contain green pigment chlorophyll which a sops energy from sunlight

Question 7

Define and describe: ribosomes A+P

Answer 7

Where protein synthesis occurs, these structures can be found attached to membranes within the cytoplasm or fiend free in the cytoplasm

Question 8

Define and describe: vacuole P

Answer 8

Large central space within a on at cell
Enclosed by a membrane and filled with a watery liquid called cell sap
Stores dissolved sugars and mineral ions