Characteristics of living things Flashcards
Pre biotic factors
1) Atoms
2) molecules
3) organelles
What are atoms
- The smallest unit of matter
- Cannot be broken down into anything simpler
Molecules
- a group of atoms bonded together
Organelles
Specialized structures within a cell that perform important cellular functions
What are the biotic factors
1) cells
2) tissue
3) organ
4) organ system
5) organism
What are cells
- the smallest unit of life
- living matter enclosed in a barrier that separates them from their surroundings
What is tissue
- A group of similar cells that perform a specific function
What are the types of tissue
Nervous tissue
Connective tissue
Epithelial tissue
Muscle tissue
What is nervous tissue
- Send and receives signals in the body
- In the brain, spinal core, and nerves
What is epithelial tissue
Lines and protects the body (skin) and organs
What is muscle tissue
Helps the body move by contraction, as well as perform body functions
Types:
1) smooth muscle: in organs, works involuntary
2) Cardiac muscle: in the heart, works involuntary
3) skeletal muscle: moves the bones, works voluntary
What is connective tissue
- Supports, connects, and protects body parts
- fat, bone, tendon, ligament
What are organs
A group of tissues that work together to perform a particular function
What is a organ system
A group of organs that work together to perform a related function
What is a organ system
A group of organs that work together to perform a related function
What is a organism
A Living thing, composed of cells (unicellular & multicellular organisms).
Species = a group of similar organisms that can breed and produce FERTILE OFFSPRING
What does population refer to
A group of the same specie in the same area
What does community refer to
Groups of different species that live in the same area
What does ecosystem refer to
Groups of organisms that live in the same area plus their non living environment
What does ecosystem refer to
Groups of organisms that live in the same area plus their non living environment
What does biome refer to
Groups of ecosystems that have the same climate and communities
What does Biosphere refer to
Part of wart where life exists, land water air atmosphere
What are the 7 characteristics of living things
1) growth and development
2) Needs energy and produces waste
3) reproduction
4) responsiveness
5) homeostasis
6) order and organization
7) adaptation
What does the characteristic “growth and development” mean
- Maturation: change in shape and size
- Differentiation: change in shape to suit a new function (baby to toddler)
