Flashcards in Intro - Chapter 1 Deck (22):
Living organisms must: (8)
Respond to stimuli
Levels of oranization? Bec Pooot Coma
What laws apply to biology?
None specifically, must adhere to laws of physics & gravity.
Biological theories are ________.
Conditional - no biological truth. Cannot prove, but can disprove.
This man discovered & coined 'cells'. He did so by magnifying ______ 30x.
Robert Hooke, Cork
This man described single cell 'animalcules' in pond water. Sampled his own _______ & found ________.
Antony Van Leeuwenhoek
Life from non-living matter?
Theory of Spontaneous Generation
This man covered meat and prevented spontaneous generation.
This man boiled nutrient broth & bacteria formed.
This man closed the flask & sealed, and no growth was noted.
Lazzano Spallanzine - however, he changed the conditions inside flask.
This man used swan neck flasks to prove no spontaneous generation.
Cell Theory in 3 Points:
All living things are made of cells & products.
New cells are created by old cells /2.
Cells are basic building units of life.
In 1735 this man came up with the hierarchy of taxonomy we use today.
Originally there were 2 kingdoms:
Plantae - Sessile, phototrophic
Animalia - Motile, heterotrophic
Now we use 3 more kingdoms:
Fungi - Sessile, decomposers
Protista - mixed bag. Microscopic euk.
Monera - microscopic prokaryotes
Taxonomic groupings from largest to small:
When using binomial nomenclature:
Genus (italics) species
Why do we use ribosomes to compare universal structure & function?
Because everything has ribosomes & they all have the same function in all organisms.
The two subunits of ribosome we use?
3 Domains of Life higher than kingdoms?
Bacteria - Prok with peptidoglycan
Archaea - Prok no peptidoglycan. Xtreme environments.
Eukarya - Euk (Protista, Plants, Fungi, Animal) Multiple kingdoms without agreement.
Thanks to the molecular revolution we now use this as the next step in understanding. Groupings based on molecular data.