Cells Flashcards
What is in a human cell
Nucleus Cytoplasm Cell membrane Ribosomes Mitochondria
What happens in the ribosomes
Protein is made
What happens in the mitochondria
It is where respiration takes place
What happens in the cytoplasm
Chemical reactions
What does a plant cell have that a human doesn’t
Chloroplasts
Vacuole
Cell wall
What does the chloroplast contain
Chlorophyll
What does the cell wall contain
Cellulose
What is different about a bacteria cell
Has no nucleus instead it has a strand of genetic material
Yeast cells and bacteria cells have both a..
Cell membrane and cell wall
Name three features of a leaf cell that make it specialised to getting as much sunlight as possible
Many Chloroplast
Chloroplast nearer the top
Greater surface area
Thin
What do guard cells do
They open and close the stomata dependant on how much car in dioxide is required to get in
How do guard cells allow car in dioxide in
By filling up with water making them turgid
Name the adaptations of a red blood cell to improve its efficiency
Concave shapes to increase the surface area to absorb more oxygen and to fit better through the capillaries
Packed with haemoglobin
No nucleus so there is more room for hemoglobin
What are the adaptations of the sperm cell
Lots of mitochondria to provide the energy required
Long tail and streamlined head
Ezymes that breakdown the egg cell
What happens to the cell membrane if the egg cell when it has been fertilised
It changes to prevent any further sperm cells getting in
