Cells Flashcards
(39 cards)
What are the five characteristics of all living things
Movement Reproduction Eat or make food Grow and develop Made up of more than one cell
What size are organelles
Very small
Where are organelles found
Throughout the cytoplasm
What are organelles surrounded by
Membrane
What are three similarities between plant and animal cells
Both have a cell membrane surrounding the cytoplasm
Both have a nucleus
Both have a mitochondria, golgi, ribosomes, endoplasmic reticulum
Where is the ciliated epithelial found
Nose lining, windpipe and lungs
What is the function of the ciliated epithelial
Move and carry dust and germs away
How has the ciliated epithelial adapted
Have tiny hairs (cilia)
Where are sperm cells found
Testes of a male
What is the function of sperm cells
Carry DNA to the egg for fertilisation
How have sperm cells adapted
Tail for swimming
Chemicals to dissolve ovum’s membrane
Where are root hair cells found
Surface of plant roots
What is the function of root hair cells
Increase root’s surface area to absorb more water and minerals
How have root hair cells adapted
Long, thin parts
Thin cell walls allow water and nutrients to pass from soil into the root
Where are palisade cells found
Upper surface of the leaf
What is the function of palisade cells
Trap sunlight during photosynthesis
How have palisade cells adapted
Long and shaped like cylinders
Contain chloroplasts
Large surface area to increase area for gaseous exchange
What is a cell
The basic unit of all living organisms
What is the cell membrane
Thin layer which holds the cell together and gives it its shape. Controls movement of substances in and out of cells
What is a semi-permeable membrane
Membrane that allows certain things in and out and keeps molecules in
What is the clear jelly-like substance in cells
Protoplasm
What are the two parts that the protoplasm can be divided into
Cytoplasm and Nucleus
What is the cytoplasm
Part of the protoplasm that lies outside of the nucleus
What is the nucleoplasm
Part of the protoplasm that lies inside the nucleus