Biology Quiz Flashcards
What did Hans and Zacharias Janssen do?
They both invented the first compound telescope (a telescope with more then 1 lens)
What did Robert Hooke do?
Used a 3 lens microscope and observed the empty chambers in cork called cells.
What did Antoinie Van Leeuwenhuck do?
Used a single-lens microscope and saw the movement of cells called bacteria.
What is the field of view?
The field of view is what you see, its called the circle of light.
What is spontaneous generation?
Life can emerge spontaneously from a nonliving matter.
What did Louis Pasteur do?
He disproved the idea of spontaneous generation by doing the chicken broth experiment. It showed that when the chicken was warm it didn’t absorb bacteria, but when it was cold it absorbed bacteria.
What did Robert Brown do?
Robert Brown discovered the structure of a cell, the nucleus, and its importance to cell function.
What did M.J Schleiden do?
Discorvered that plant cells were made of cells and had a nucleus which was responsible for cell developemnt.
What did Theodor Schwann do?
Discovered that all animal cells are made of cells and had a nucleus which was responsible for cell development.
What did Rudolf Virchows do?
Discovered that all cells come from pre-existing cells.
What are the 3 cell theories?
- All living things are made up of one or more cells.
- All life functions take place in cells.
- All cells come from pre-existing cells.
Cell membrane:
Controls what goes in and out of the cell.
Cell wall:
A frame around the cell that provides for support and strength, just like the walls of a house.
Nucleus:
The organelle that has the DNA of a cell and its genetic material.
Cytoplasm:
Has nutrients required by the cell to carry on the life process.