Cells and Life
What is tissue?
groups of similar cells working together
This surrounds the cell as a protective covering and regulates the entrance and exit of the cell
cell membrane
this is the powerhouse of the cell and creates energy (ATP)
mitochondria
How do plants get their energy?
through photosynthesis
This process happens when a molecule is too large for passive and active transport.
What are organs?
groups of similar tissue
cytoplasm
these are the garbage men of the cells, they are the demolition crew, disposing of old structures and destroying foreign substances
lysosomes
How do humans/animals/some plants get their energy?
cellular respiration
Describe the concentration gradient in active transport.
Low to high
What are the 2 types of cells?
Eukaryotic and Prokaryotic Cells
ribosomes
This provides protection and support for the cell and maintains the cell's shape
cell wall
what is the equation for photosynthesis?
carbon dioxide + water + light energy = sugar + oxygen
Name the two forms of passive transport that do not require the cell to work.
diffusion and osmosis
Who discovered cells and how?
Robert Hooke, by studying cork
this protects the cell from harmful substances and keeps the cell from drying out
capsule
this is a network of tubes that surrounds the nucleus, produces and transports proteins
endoplasmic reticulum (two types!)
glucose + oxygen = energy + water + carbon dioxide
What happens in glycolosis?
Glucose (sugar) is broken down
Name the three points of the Cell Theory.
1. All living things are made up of one or more cells.
2. All cells come from preexisting cells.
3. Cells perform the functions of all living things.
this is a whip-like structure and spins to move the cell - it's used to propel the cell though the environment
flagellum
many proteins from the ER are sent here - they modify proteins and package them into vesicles
Golgi Apparatus
what are the two types of oxygen need? (respiration)
aerobic and anaerobic respiration
A potato is placed in salt water. After an hour, it becomes flimsy. What process is involved? What moves where?
Osmosis; water moves from potato to water