Cells Flashcards
What are the five characteristics of living things
energy, environment , reproduction, growth, wastes
What is the basic unit of life?
Cell
what is the smallest level of organization to largest level of organization
cell, tissue, organ, organ system
Describe the Nerve cell
Has many connections so that signals can be sent quickly to other nerve cells
describe the muscle cell
is flexible and stretchy
Describe the Epithelial(skin)
Though as they are exposed to the environment
Describe the Blood cell
contain hemoglobin to allow them to carry more oxygen
Describe a Unicellular organism
Are organisms that are made up of one cell
Describe multicellular Organisms
Are organisms that are made up of many cells(longer lifespan because injury to one cell isn’t going to affect organism)
What is the function of a Cell membrane
Selectively permeable, keeps equilibrium
What is the function of the Cell wall
Strengthen and supports the cells
What is the function of the Cytoplasm
Contains nutrients needed for cellular activities
What is the function of the Nucleus
Directs all cellular activities, contains DNA s porous membrane
What is the function of the Lysosome
Digest bacteria, damaged, proteins or food particles
What is the function of the Lysosome
Digest bacteria, damaged, proteins o food particles