Cells And Simple Transport Flashcards
WHAT FEATURES ARE IN A PLANT CELL? (8)
- Cell membrane
- nucleus
- ribosomes
- ⭐️cell wall
- ⭐️vacuole
- ⭐️chloroplast
- Mitochondria
- Cytoplasm
WHAT FEATURES ARE IN AN ANIMAL CELL? (5)
- Nucleus
- Cytoplasm
- Cell membrane
- ribosomes
- Mitochondria
WHAT FEATURES ARE IN A BACTERIA CELL? (8)
- chromosomes
- cytoplasm
- plasmid
- cell wall
- ribosomes
- flagellum
- gelatine like capsule
- cell membrane
WHAT IS A YEAST CELL?
A single-celled fungus
WHAT IS A UNICELLULAR ORGANISM?
A one called living thing
MICROORGANISM
Small living things
WHAT IS A EUKARYOTES/ EUKARYOTIC CELL?
Cells that contain membrane bound organelles
EXAMPLE
• nucleus
• mitochondria
• chloroplasts
WHAT IS A PROKARYOTE?
Cells that do not contain membrane bound organelles
DEFINITION OF SPECIALISED CELLS
Cells may be specialised for a particular function, their structure will allow them to carry this function out
Specialised cells.
LEAF CELL, FUNCTION AND ADAPTION
Function - it absorbs light energy for photosynthesis
Adaption - packed with chloroplasts, regular shaped closely packed cells form a continuous layer for efficient absorption of sunlight
Specialised cells
ROOTHAIR CELL, FUNCTION AND ADAPTION
Function - absorbs water and mineral ions from the soil
Adaption - long finger Like process with very thin walls which give it a large surface area
Specialised cells
SPERM CELL, FUNCTION AND ADAPTION
Function - to penetrate and fertilise the egg (female gamete)
Adaption - head contains genetic information, long tail so that it can swim, an enzyme to help penetrate the cell membrane
Specialised cells
RED BLOOD CELLS, function and adaption
FUNCTION - contains haemoglobin to carry oxygen to cells
ADAPTION - Thin outer membrane allows oxygen to diffuse easily
WHAT IS DIFFUSION?
Diffusion is the process by which particles in a substance spread out from each other and
Move from areas of high concentration to low concentration
HOW DO PARTICLES DIFFUSE THROUGH A CELL MEMBRANE?
- cell membrane has tiny gaps (partially permeable)
- if the concentration of small particles on each side are different then more particles will diffuse from the concentrated solution to the dilute solution
- NET MOVEMENT, after a few hours it will be equal
