BIOLOGY UNIT CONCEPT MAP ASSIGNMENT
Heirarchy in the Organization of living things
Cells
Smallest in the hierarchy of living things
Plant Cell Organelles
Cell wall
Large vacuole
Chloroplast
Organelles
Mitochondrion
Cell Membrane
Nucleolus
Nucleus
Endoplasmic reticulum
Golgi apparatus
Vesicles
Vacuoles
Cytoplasm
Nuclear Membrane
Chromatin
Smooth ER
Rough ER
Ribosomes
Animal cell Organelles
Centrosomes
Multiple small vacuoles
Cytoskeleton
Cell membrane only No cell wall
Lysosome
Plasmodesmata
Cell
Life cycle
Importance of cells division
You start life as a sing cell: a fertilized egg. Now your body is made up of trillions of cells. For a single cell to become a full grown multicellular plant or animal Cell division is required as it allows organisms to reproduce, grow, and repair damage.
Cell division for Reproduction
All cells use cell division to reproduce.
Each time a parent cell divides, it results in two new organisms.
Each organisms inherits
genetic information from its
parent. It's important that each new cell has a complete set of genetic information
Asexual reproduction involves only one parent.
The offspring are exact genetic copies of the parent.
Multicellular organisms also need to reproduce and pas their genetic information along to their offspring. (Some multicellular organisms can produce offspring by asexual reproduction.)
Sexual reproduction in which a cell from one parent
joins with the cell from another parent. These two parental cells are different from normal body cells: as they contain half of the DNA found in a cell.
Cells know as gametes undergo additional cell division prosses such as meiosis. (When two gametes combine.)
Offspring will inherit characteristics from both parents.
Cell division for growth
All organisms grow. As multicellular organisms
grow, the number of cells increases
The size of each cell does not increase because of
how a cell uses chemicals to function
Cells require: Energy, nutrients, water, and gases
Must also be able to excrete
carbon dioxide and other waste products.
The movement of these chemicals are caused by diffusion
Concentration is the amount of solute (substance) in a given volume of solution
Osmosis is how water enters and leaves the cell
Cell division for
repair
Each day your body sheds millions of dead skin cells
Replaced by new ones
Your body also replaces each red blood cell
every 120 days
A bone break, a cut, or blister all require
new cells to close the gaps.