Cell Theory and Types
What are the three main parts of the cell theory?
All living things are made of cells; cells are the basic unit of life; all cells come from preexisting cells.
Which of the following structures is NOT found in all prokaryotic cells: nucleus, plasma membrane, ribosomes, or DNA?
Nucleus
Which organelle is known as the “powerhouse of the cell”?
Mitochondria
What is the main function of the cell membrane?
control what enters and leaves the cell
Which type of cells lack a nucleus?
Prokaryotic cells
True or False: Prokaryotic cells are usually larger than eukaryotic cells.
False
What is the function of ribosome?
Make proteins
What is the movement of molecules from an area of high concentration to low concentration called?
diffusion
Which type of cells have a nucleus?
Eukaryotic cells
What part of a eukaryotic cell contains the cell’s genetic material?
The nucleus
What organelle is responsible for photosynthesis in plant cells?
Chloroplast
What type of transport requires energy (ATP)?
Active transport
What is the smallest unit of life?
The cell
Name one organism that is prokaryotic
Bacteria/ Archaea
What structure gives plant cells their rigid shape?
cell wall
What is osmosis?
The diffusion of water across a selectively permeable membrane
Which scientist concluded that all plants are made of cells?
Matthias Schleiden
What major structural feature distinguishes eukaryotic cells from prokaryotic cells?
The presence of membrane-bound organelles
What organelle packages and distributes proteins?
Golgi apparatus
What structure helps cells recognize each other and communicate on the cell membrane?
carbohydrate chains (or glycoproteins)