Living Things
What is the basic unit of life?
The cell
What organelle controls the cell?
Nucleus
What does unicellular mean?
Made of one cell
What system breaks down food?
Digestive system
What is diffusion?
Movement of particles from high to low concentration
Name one characteristic of living things.
Grow, reproduce, use energy, respond to environment, made of cells
What does the mitochondria do?
Produces energy
What is one advantage of being multicellular?
Can have specialized cells and grow larger
What system takes in oxygen?
Respiratory system
What is osmosis?
Diffusion of water through a membrane
Do all living things need energy?
Yes
What’s the difference between plant and animal cells?
Plant cells have a cell wall and chloroplasts
What is one disadvantage of being unicellular?
Must do all life functions with one cell
What system moves blood and nutrients?
Circulatory system
Is energy needed for diffusion?
No (it’s passive transport)
What is one way to tell something is alive?
It shows all five life functions
What does the Golgi apparatus do?
Packages and sends proteins
What’s the order of multicellular organization?
Cell → Tissue → Organ → System
What system controls the body and senses?
Nervous system
What does a concentration gradient mean?
Difference in concentration from one place to another
Why are cells important to all living things?
They carry out the functions of life
What is the tonoplast?
A large central water vacuole in plant cells
Why is cell specialization important?
Different cells perform different functions
What system removes waste from the body?
Excretory system
Why is osmosis important to cells?
Helps balance water inside and outside the cell