Biology Flashcards
Independent variable
The variable only given to the experimental group.
What is the control group?
The group that is identical to the experimental group but is not given the independent variable.
Dependent variable
The data collected from the experiment
Pasteur
- Was the first to disprove spontaneous generation
- Had a flask with an S shaped tube to let air in filled with broth and nothing grew in the broth
- When he removed the tube, microorganisms were found
Who was the father of modern taxonomy?
Linnaeus
Linnaeus
Came with today phylum classifications
Hook
Looked at a piece of cork under a microscope and came up with the term ‘cell’
Theorized that all animals are made of cells
Schwann
Theorized that all plants are made of cells
Schleiden
Said that all cells come from pre-existing cells
Virchow
Cell theory
- Cells are the basic units of structure and function in living things
- Cells only come from pre-existing cells
- All living things are made of one or more cells
Heterotrophs
- Cells cannot photosynthesize
- Cells contain mitochondria
- Have centrioles
- No cell wall
- Many small vacuoles
Diplo
Two
Bacillus
Rod shaped bacteria
Coccus
Sphere shaped bacteria
Spirillium
Spiral shaped bacteria
Gram Positive
- Some cells produce endospores
- Purple color
- Contain thicker cell well
- Do not have an extra cell membrane
- Bacteria is less resistant to antibiotics
- Produce exotoxins that damage host
Gram Negative
- No cells produce endospores
- Pink color
- Contain thinner cell wall
- Have an extra cell membrane outside the cell wall
- Bacteria is more resistant to antibiotics
- Produce endotoxins when cell dies
Mitochondria
Contains enzymes for aerobic respiration
Nucleus
Surrounds and protects the genetic material
Autotrophic
- Cells can photosynthesize
- Cells contain mitochondria and chloroplasts
- Do not have centrioles
- Cell wall
- One big water vacuole
Eukaryotes
- Have a nucleus that contains DNA strands
- Many organelles
- Some have cell walls
- Respiratory enzymes in the mitochondria
- Chlorophyll in thylakoids in chloroplasts
Cell membrane
Controls what goes in and out of the cell
What is the group that’s gets the independent variable?
Experimental group