Glossary of 2006 Johnson - cells
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- What are organelles?
- Organelles are parts of a cell.
- What are two types of passive transport?
- Diffusion and osmosis
- What is diffusion?
- When materials move from high concentrations to low concentrations.
- What is osmosis?
- When water moves from high concentrations to low concentrations.
- What are two forms of active transport?
- Endocytosis and exocytosis
- What is a vacuole?
- Stores waste, water, or food.
Remember vac and sack rhyme--you hold things in a sack.
- What is active transport?
- When the cell spends energy to bring materials inside the cell.
- What is endocytosis?
- The process by which a cell takes in a substance by surrounding it with the cell membrane?
- What is a cell wall?
- Appears only in plant cells. Gives the cell support and structure.
- What is exocytosis?
- The process by which a cell gets rid of substances from the cell?
- What is homeostasis?
- The ability for organisms to keep conditions inside the body the same.
- What is a cell membrane?
- Appears in both animal and plant cells. Protects the cell and selectively allow things to enter and exit the cell.
- What are mitochondria?
- Organelles that make energy for the cell. The generator.
Remember mighty mitochondria.
- What is a chloroplast?
- Organelle that is involved in photosynthesis in plant cells. It creates the food for the cell.
- What is the nucleus?
- The nucleus is the control center of the cell. The main office.
- What are lysosomes?
- The lysosomes clean up the cell. They contain digestive chemicals that break down food and dead material in the cell. The custodians. Remeber custodians use Lysol to clean.
- What are the Golgi bodies?
- They are like the mail room. They package and sort things to be sent other places in the cell. Picture Mr. G in the mailroom sorting mail.
- What is endoplasmic reticulum?
- It is like the hallways in a school. It transports stuff. Ribosomes are attached to the rough er.
- What is selective permeability?
- The cell membrane is selectively permeable. It allows some things to enter & exit the cell and does not allow other things to enter.
- What types of moecules easily enter and exit the cells?
- Water, oxygen, carbon dioxide.
- What kind of molecules are too big to diffuse through the cell?
- sugar molecules
- Fill in the blank:
All living things are made of _________________.
- Fill in the blanks:
All living things come from _______ _________ _________
- other living things
- Fill in the blanks:
The cell is the __________ ___________ of life.
- building block
- What are three ways that plant cells are different from animal cells?
- They have a cell wall, they have chloroplasts, and they have a larger vacuole.
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