Levels of organisation and cell structure

Levels of organisation

organelle, cell, tissue, organ, organ system

Organelles

membrane bound structure within the cell with specific functions

tissue

group of cells working together to perform a function

organ

several tissues carrying out a specific function

organ system

a group of organs

eukaryotic cells

contain membrane bound organelles

Structures inside an animal cell

nucleus, cell membrane, mitochondria, cytoplasm

structures inside a plant cell

cell wall, cell membrane, vacuole, cytoplasm, mitochondria, chloroplasts, nucleus

Difference between animal and plant cell

plant cell has a cell wall and chloroplasts, vacuole

cytoplasm

site of chemical reactions

cell membrane

controls entry / exit of substances

nucleus

contains all genetic material

ribosomes

make proteins for the cell

mitochondria

generate energy for respiration

chloroplasts

contain chlorophyll for photosynthesis

vacuole

store watery liquid with sugar

cell wall

made to keep the cell a fixed shape, contains cellulose

How does a plant cell store energy

As starch

How does a animal cell store energy

As glycogen