Life process Flashcards
What are all living organisms composed of?
Cells
Cells are the fundamental units of life.
What type of organisms are made from a single cell?
Simplest organisms
These include unicellular organisms like bacteria.
What are multicellular organisms composed of?
Millions of cells
These organisms can include complex plants and animals.
How many different types of cells can multicellular organisms have?
Hundreds
Each type of cell has a different structure and function.
What is the purpose of specialized cells in multicellular organisms?
To carry out particular functions
Specialization allows for greater efficiency in biological processes.
What are the basic features that are the same in all cells?
Basic cellular features
Despite differences, all cells share fundamental characteristics.
What are the eight life processes that take place in most living things?
- Require nutrition
- Respire
- Excrete
- Respond to stimuli
- Move
- Control internal conditions
- Reproduce
- Grow and develop
These processes are essential for survival and functioning.
How do plants obtain their nutrition?
Make their own food
This process is known as photosynthesis.
How do animals obtain their nutrition?
Eat other organisms
Animals are heterotrophs.
What is the process of releasing energy from food called?
Respiration
This is a critical metabolic process.
What do organisms excrete?
Waste products
Excretion is vital for maintaining homeostasis.
What is meant by ‘respond to stimuli’ in living organisms?
Sensitivity to changes in surroundings
This response is essential for survival.
How do animals move?
By the action of muscles
Movement is crucial for finding food and escaping predators.
How do plants exhibit movement?
Slow growth movements
This includes growth toward light (phototropism).
What do organisms do to maintain a steady state inside the body?
Control their internal conditions
This process is known as homeostasis.
What is the process of producing offspring called?
Reproduction
This can be sexual or asexual.
What does it mean for organisms to grow and develop?
Increase in size and complexity
Growth involves using materials from food.
