Chapter 4 Flashcards
Unicellular
A term used for an organism consisting of only one cell
Cell
The smallest unit of a living thing
Contains organelles and DNA
Organism
A complete living thing
Energy
Ability to do work
What is a cell membrane
An external boundary around a cell made of lipid and protein controls what goes in and out of the cell
Cell theory
A theory stating that all living things are made of cells and that the cell is the smallest form of life and cells come from pre existing cells
Tissue
A group of cells
Lifespan
Birth growth reproduction death
The length of time for which an organism lives
What is the organization of organisms?
I. Cell
- Tissue
- Organs
- System
System
A group of organs
What are the characteristics of life?
Made of cells Grow and develop Respond to stimulus Reproduce after own kind Use energy
What can a cell relate to?
A city
Endoplasm reticulum
System of passage ways that allows materials to transport from one part of the cell to another
Organ
A group of tissue
Nucleus
The largest organelle In the cell the control center
Multicellular
A term used for an organism with many cells
Cytoplasm
Jelly like substance made of water protein sugar fat
The cytoplasm fills the cell and surrounds the organelles inside the cell
Nuclear pore
Protein in the nuclear membrane which allows things to get in the nucleas
Chromosome
Tiny bundle of DNA
Mitochondria
Responsible for producing and releasing energy
What is the energy for the cell
The energy is glucose and sugar
What are the two types of er
Rough and smooth
Where is the chromosome
In the nucleas
Rough er
Has an organelle called a ribosome and it is attached to the nucleas
