Lecture One Flashcards
What four things are required for natural selection?
Variation, inheritance, time, selection pressure
What are the three domains?
Bacteria, eukaryotic, archaea
What are the four domains in eukarya? (simple names only)
Animals, fungi, protists, plants
This decreases the impact of an initial stimulus
Negative feedback loop
This speeds up the end product in response to stimulus
Positive feedback loop
What do ribosomes do?
Produce proteins
The DNA in a eukaryotic cell is located here
Nucleus
The DNA in a prokaryotic cell is located here
Nucleotoid
Why is there an upper limit for eukaryotic cell size?
Due to bad surface area to volume ratio, making cellular respiration ineffective
Mitochondria originates from this bacteria
Proteobacteria
Chloroplast originates from this bacteria
Cyanobacteria
Primordial soup theory hypothesis’s the use of what two energy sources to create life?
Lightning and UV rays
Dark Smoker Theory theorises the use of what compounds and vents to create life?
Iron-sulfur compounds and alkaline vents
RNA can do what function typically done by proteins?
Catalyse reactions
What is Chelation?
Binding molecules with metal ions
This theory theorises that life did not originate on earth, but elsewhere.
Panspermia
We measure cells with this unit.
Micrometres
Components of cells (e.g organelles) are measured with this unit.
Nanometres
This theory states that mitochondria and chloroplasts originated from bacteria.
Endosymbiosis Theory
This type of cell is the only cell with both a nuclear envelope and membrane-enclosed organelles.
Eukaryotic cells
What is a peptidoglycan?
Mesh-like polymer for cell wall in a prokaryotic cell
These domains have circular chromosomes.
Bacteria and archaea
Some species of this domain can grow at temps >100c
Archaea
