Sci:10 BRHS Bio Scientits
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- What is Aristotles contribution to biology?
- Aristotle made observations of more than 500 animal species and set up a classification system.
- What did Zacharias Janssen invent?
- He invented the first two lens microscope in 1595. (compound microscope)
- What did Robert Hooke discover?
- Hooke discovered the cell from examining thin slices of a cork.
- What was Antoni van Leeuwenhoek first to observe?
- individual free-living cells, such as bacteria, and unicellular protozoa.
- What experiment did Francesco Redi perform?
- He proved that living organisms need oxygen to be produced by cealing meat in a container and flies were not produced.
- What was john Needhams theory?
- That there was a life force that produced spontaneous generation.
- What was Spallanzanis claim against Needhams theory?
- he proposed that there were micro organisms in the air that were responsible for ew growth.
- How did pasteur disprove spontaneous generation?
- Pasteur put broth in flasks with the tops sealed by bending them. This way no micro organisms could get in to contaminate it.
- What cell structure did Robert Brown identify?
- Brown discovered the cells nucleus in 1838.
- Who proposed the cell theory?
- Matthais Schlieden and Theodor Schwann.