Chapter 2– The Cell In Action. Section 1 – Exchange with the Environment. Diffusion. Osmosis.
Section 1 – Exchange with the Environment
______________________________ - The movement from areas of high concentration to areas of low concentration______________________________ - The diffusion of water from areas where they are more concentrated to areas where they are less concentrated.______________________________ - a membrane that lets only certain substances pass through.
Water moves OUT, salt moves IN
Cell gets SMALLER!!
Water moves IN.
Cells gets LARGER!!
Passive transport salty solution?
_________________________________________ - the movement of particles across a cell membrane without the use of energy. Particles move from an area of ______________ concentration to an area of _____________ concentration.
________________________________________ - the movement of particles across a cell membrane with the use of energy. Particles move from an area of ______________ concentration to an area of _____________ concentration.
Large particles move in to a cell by the process of ____________________________ and out of a cell by the process of _______________________. Both processes require the use of a sac called a __________________________.
Section 2 – Cell Energy
Respiration and Photosynthesis salty solution?
Photosynthesis – process in which autotrophs use light energy from the sun to produce food.
How does food store energy? energy from the sun to produce food.
PHOTOSYNTHESIS– the process in which the plastids of plant cells take energy from the Sun, adds it to water and carbon dioxide, and changes it to food and oxygen.
H2O + CO2 + E C6H12O6+ O2
Photosynthesis energy from the sun to produce food.
So how do heterotrophs get their food?
Respiration – the process in which the mitochondria of cells takes food, adds it to oxygen, and changes it to water, carbon dioxide, and energy
C6H12O6 + O2 H2O + CO2 + E
ANAEROBIC FERMENTATION – energy can be taken from food without oxygen present
Section 3 – The Cell Cycle
Interphase with oxygen present
The part of a cell’s life cycle when the cell divides it nuclear contents into 2 nuclei which are identical
Mitosis consists of 4 steps:
Prophase with oxygen present
chromosomes line up at the equator with oxygen present
Anaphase with oxygen present
Telophase with oxygen present
Plant cell-cell plate
Animal cell-cleavage furrow