MRS C GREN + Levels of organisation Flashcards
(36 cards)
What does M stand for in MRS C GREN?
Movement
What does R stand for in MRS C GREN?
Respiration
What does S stand for in MRS C GREN?
Sensitivity
What does C stand for in MRS C GREN?
Control
What does G stand for in MRS C GREN?
Growth
What does the second R stand for in MRS C GREN?
Reproduction
What does E stand for in MRS C GREN?
Excretion
What does N stand for in MRS C GREN?
Nutrition
What is movement?
Not staying in the same position
What is respiration?
Release of energy from food within cells
What is sensitivity?
Ability to recognise and respond to changes in the environment
What is control?
Maintain their constant internal environment (e.g. blood glucose levels/body temperature)
What is growth?
Increasing in size and mass
What is reproduction?
Producing offspring
What is excretion?
Removal of toxic metabolic waste products from cells
What is nutrition?
Either making their own food or eating microorganisms?
What are the organs of excretion?
Kidneys, skin and lungs
How do plants make their own food?
Photosynthesis
What is a unicellular organism?
An organism made up of one cell
What are the main two examples of unicellular organisms?
Bacteria and (some) fungi
What is a multicellular organism?
An organism made up of two or more cells
What are the main three examples of multicellular organisms?
Animals, plants and (most) fungi
What is the order of size from organelles to organ systems?
- Organelle
- Cell
- Tissue
- Organ
- Organ system
What is an organelle?
Tiny structure within cells