Years of Discovery
What year was first observed by Robert Hooke?
1665
This organelle directs cell processes by providing DNA instructions. It is surrounded by its own membrane and is covered with pores.
nucleus
This occurs when particles of a substance move from where there are many particles to where there are few particles.
diffusion
provides tensile strength and protection against mechanical and osmotic stress
cell wall
What does the cell wall do?
Supports and protects
What year did Rudolf Virchow add the third part of the cell theory?
1855
This fills the space inside a cell. It is semi-fluid and is composed of water and dissolved materials.
Cytoplasm
The type of diffusion that occurs when a transport protein is required to move large molecules along with the concentration gradient.
facilitated diffusion
This organelle is found only in animal cells. It is made of microtubules and is thought to play a role in cell division.
centrioles
What is inside the nucleus?
DNA
What year was the first living cell observed by Antonie van Leerwenhoek?
1670
This organelle is a series of flattened membranes. Cell products pass through these membranes and become packaged for delivery in or out of the cell.
Golgi apparatus
This occurs when water diffuses into a cell.
osmosis
This organelle is a series of interconnected passageways. Proteins and lipids are synthesized (put together) here also. There are two varieties 'S' and 'R'.
endoplasmic reticulum
What are three things that are stored in the vacuoles?
food, water, waste
What year did Robert Brown discover the nucleus in a cell plant?
1833
synthesizing proteins by translating the genetic code transcribed in mRNA into an amino acid sequence.
Ribosomes
This term refers to the direction the particles are moving; you are either going with it or against it.
concentration gradient
regulates the transport of materials entering and exiting the cell.
cell membrane
Name the three differences between a plant cell and an animal cell.
Plant cells have a larger vacuole, chloroplasts, and a cell wall.
What year did Theodor Schwann proposed the cell theory?
1839
a membrane-bound cell organelle that contains digestive enzymes.
Lysosomes
The sodium/potassium pump requires ATP to pump against the concentration gradient. This is an example of this type of transport.
active transport
Promotes the growth of new cells and cell multiplication
Mitochondria
What is the substance found in the chloroplast that makes the plant green?
Chlorophyll