U1AOS1 Cells Flashcards
What are the three domains in the hierarchy?
Bacteria
Archaea
Eukarya
Prokaryotes
Unicellular organisms that lack a nucleus or any membrane-bound organelles
Eukaryotes
A cell with membrane-bound nucleus and organelles
Prokaryote structure
Have a cell envelope, cytoplasm, ribosomes and a single, circular chromosome (nucleoid)
What is the effect of size on SA:V
Larger objects have a smaller SA:V than smaller objects of the same shape
The effect of shape on SA:V
Flatter objects have a greater ratio than objects of the same volume with a less flattened shape. A sphere has the smallest ratio of any shape
Which organelle is found in both eukaryotic and prokaryotic cells?
Ribosomes
Four features all cells have in common
Plasma membrane
Cytoplasm
DNA
Ribosomes
DNA in prokaryotes
Circular chromosomes
3 main points in cell theory
- All living things are made up of cells
- Cells are the most basic unit of life
- All cells are made from pre-existing cells
Balanced equation for photosynthesis
6CO2 + 12H2O => C6H12O6 + 6O2
Cellular respiration balanced equation
C6H12O6 + 6O2 => 6CO2 + 6H2O
What is an autotroph
An organism that can produce its own food using light, water, carbon dioxide or other chemicals
What is a heterotroph
Organism that eats other plants or animals for energy
Factors that increase the rate of diffusion
Temperature
State (gas liquid solid)
Size of molecules
Concentration gradient
