What is the function of red blood cells? Why are they red?
They carry oxygen around the body. They are red because they contain hemoglobin, a bright red protein that contains iron.
What is the function of white blood cells?
Protect the body from bacteria, viruses and other foreign invaders. They are like bodyguards.
What is the function of nerve cells?
They carry information from the brain to the rest of our body. The brain also receives information from the sensory organs from these cells.
What is the function of root hair cells?
they absorb water and minerals from the soil
What is the function of leaf cells?
They absorb sunglight so photosynthesis can take place
What are the five kingdoms that living things can be classified into?
Monera, protist, fungus, plant, animal
Give two examples of organisms that belong to the protist kingdom
Algae, amoeba
What is an organism with many cells?
Multicellular organism
Most cells work together with other similar cells to make layers, called ________.
Tissues
Put them in order from smallest to biggest:
Cell, tissue, organ, system, organism
Cell, organ, organism, tissue, system
Organism, system, organ, tissue, cell
Cell, organ, tissue, system, organism
What is an example of a multicellular organism?
Organs work together to make _________.
Systems
Give an example of an organ.
What are organs made out of?
Layers of tissue
What is the stomach?
Tissue
Organism
Organ
Cell
Is bacteria multicellular or unicellular?
Unicellular
