Cell Theory
What is the smallest living unit that can do jobs to help the organism stay alive?
Cells
Is a bacteria unicellular or multicellular?
Unicellular.
What is the smallest level of organisation?
Cells
What is a specialised cell?
A specialised cell is a cell with a different structure that performs a specific function or job
(BONUS 100: Give an example of a specialised plant cell)
Which cell organelle contains the DNA of the cell?
Nucleus
(BONUS 100: what else does it do?)
Describe the size of cells.
Microscopic - too small to be seen with our eyes
Describe a multicellular organism.
A multicellular organism is made up of two or more cells.
(BONUS 50: Give an example of a multicellular organism)
OR
(BONUS 100: Give a characteristic of a multicellular organsism)
Tissues
Which specialised cell carries oxygen and carbon dioxide around the body?
(BONUS 150: What do white blood cells do?)
Is the cell wall in animal or plant cells, and what does it do?
Plant cells - it provides structure and protection to the cell
Name two things that can cells can do.
- Help you grow
- Help you heal
- Help remove waste
- Get energy
- React to changes
etc.
Give two examples of unicellular and multicellular organisms.
Unicellular - bacteria, amoeba, yeast
Multicellular - any living organism
Name three different organ systems.
Digestive system, skeletal system, muscular system, circulatory system, respiratory system, nervous system
Describe the relationship between cells and living/non-living organisms.
All living things are made up of cells. Non-living things are not made up of cells.
What is one advantage of a unicellular organism?
- They can grow/reproduce much faster
- They need fewer resources
What are organs made up of?
Different tissues work together for one big job
Name all three cell theory rules.
1. All livings things are made up of one or more cells.
2. Cells are the basic building blocks of life
3. New cells come from existing cells
What are two advantages of multicellular organisms?
- They have specialised cells that can do jobs better
- They can be larger and stronger
- The can form tissues and organs, which perform complex tasks
Explain each of levels of organisation and give an example for each.
100 for each listed, 500 for all
Cells - smallest unit, perform specialised jobs (e.g. blood cell, plant cell, nerve cell, etc.)
Tissues - similar cells for tissues (e.g. muscle tissue, nervous tissue, connective tissue, epithelial tissue)
Organs - different tissues work together to form organs to perform one big job (e.g. heart, lungs, skin, stomach, etc.)
Organ systems - organs work together (e.g. digestive, nervous, respiratory, circulatory, etc)