Characteristics of Cells
What separates a cell from its outer environment?
What separates a cell from its outer environment is the cell membrane.
What does the nucleus do?
The nucleus stores the DNA.
List the advantages unicellular organisms have over multicellular organisms.
The advantages unicellular organisms have over multicellular organisms is that unicellular needs fewer resources and can live in harsh conditions.
Define cell.
Cell is the smallest function and structural unit of all living things.
What was the first person to describe cells and when?
The first person to describe cells was Robert Hooke in 1665.
Why is DNA important?
DNA is important, because it contains the instructions to make the cell.
List the advantages multicellular organisms have over unicellular organisms.
The advantages multicellular organisms have over unicellular organisms is that they are larger and have a longer lifespan.
Define organelles.
Organelles are a small body in a cell's cytoplasm that is specialized to perform a specific function.
List the three parts of the cell theory.
The three parts of the cell theory is that all organisms are made up of one or more cells, the cell is the basic unit of all organisms, and all cells come from existing cells.
Explain the difference between a prokaryotic and eukaryotic cell.
The difference between a prokaryotic and eukaryotic cell is that a prokaryotic cell doesn't have membrane-bound organelles or a nucleus, while eukaryotes do.
How does the digestive system work?
The digestive system works by breaking down food mechanically and chemically, and works with the circulatory system.
Define multicellular organisms.
Multicellular organisms means to be made up of more than one cell.
Why are cells so small?
Cells are small, because as they increase volume, their outer surface area ratio to the volume decreases, until there isn't enough surface area to support the cell.
What is the cell mostly made of?
The cell is mostly made of cytoplasm.
How does the respiratory system work?
The respiratory system works by taking in Oxygen through skin, gills, spiracles, or lungs. The Oxygen enters the blood stream, and is carried to all the body's cells. Once in the cells, the Oxygen is used to release energy from nutrients from digestion.
Define cellular respiration.
Cellular respiration is a process to break down food.
What do all cells have in common.
All cells have DNA, cytoplasm, and the cell membrane in common.
What are the different parts that make up a cell in an animal cell?
The different parts that make up a cell in a eukaryotic cell is the cell membrane, nucleus, ribosomes, mitochondria, smooth and rough endoplasmic reticulum the golgi complex, and DNA.
How are living things organized?
Living things are organized from cells, to tissues, to organs, to organ systems, to organisms.
Define organisms.
Organisms are living things that can carry out life processes by itself.