Characteristics of Life
This is the study of life and its properties.
What is biology?
This theory explains the fundamental principles about cells.
What is cell theory?
This tool allows scientists to magnify and study cells.
This tool allows scientists to magnify and study cells.
These cells lack membrane-bound organelles.
What are prokaryotic cells?
Both prokaryotic and eukaryotic cells contain this genetic material.
What is DNA?
One property of life is the ability to maintain a stable internal environment. What is this called?
What is homeostasis?
According to cell theory, all cells come from these.
What are other cells?
This type of microscope uses light and lenses to magnify living cells.
What is a light microscope?
These cells have a nucleus and organelles.
What are eukaryotic cells?
This jelly-like substance is found inside all cells.
What is cytoplasm?
All living organisms are made up of these basic units.
What are cells?
Cell theory states that all living organisms are made up of this.
What is one or more cells?
This microscope uses fluorescent dyes to highlight specific molecules.
What is a fluorescence microscope?
This type of cell is always unicellular.
What is a prokaryotic cell?
These structures build proteins in all cells.
What are ribosomes?
This process allows organisms to produce offspring.
What is reproduction
Cells are the smallest unit of this for an organism.
What is structure and function?
This type of microscope uses electrons and can only view nonliving cells.
What is an electron microscope?
Eukaryotic cells typically range in size from this to this.
What is 10 to 100 micrometers?
This outer layer separates the cell from its environment.
What is the plasma membrane?
Name three of the seven properties that distinguish living organisms from nonliving things.
What are reproduction, growth and development, and response to the environment?
List all three main concepts of cell theory.
What are: (1) All living organisms are made of one or more cells, (2) Cells are the smallest unit of structure and function, (3) All cells come from other cells?
Compare SEM and TEM in terms of what they visualize.
What is: SEM shows 3D surface images; TEM shows internal structures like organelles?
Name two features unique to prokaryotic cells and two unique to eukaryotic cells.
What are:
Prokaryotic – no organelles, circular DNA;
Eukaryotic – membrane-bound organelles, linear chromosomes?
Despite differences, name four features shared by all cells.
What are plasma membrane, cytoplasm, DNA, and ribosomes?