Cell Characteristics
What are the features and functions of the mitochondria?
"Powerhouse" of the cell
Turns sugar into ATP (plant cell)
Makes ATP
Double Membrane (inner/outer)
Found in both animal and plant cells
What length of tails better support hydrophobic interactions and why?
Longer tails because there is more surface area to bind to.
What are the three types of cytoskeletal structures?
Actin
Intermediate filaments
Microtubules
"trash can" of cell
Degrades cell waste
found mostly in animal cells
If a membrane has more unsaturated fatty acids, will it have less fluidity and permeability, or more fluidity and permeability? Why?
More fluidity/permeability
What are the features and functions of Actin?
Movement: help cell move forward (worm-like motion)
Contractile Ring: forms to help cell seperate
Rough - Ribosomes, make proteins to ship to other places
Smooth - NO ribosomes, make lipids and store calcium
Which would you expect to be true about the membranes of an organism living in a very cold environment: Saturated tails, or unsaturated tails? Why?
Unsaturated
What are the features and functions of microtubules?
Form a large tube for structure and function
Involved in mitosis/vesicle transport
Form networks from nucleus to plasma membranes that proteins walk along
Able to form Cilia
What do vacuoles do and what type of cells are they found in?
Store water, solutes, and waste
Help maintain shape of cell with turgor pressure
Found mainly in plant cells
Why does cholesterol lower membrane permeability at most temperatures?
It fills the gaps in membranes and increases hydrophobic interactions
What does the golgi do in the cell?
Receives proteins and lipids from ER
Decorates proteins/lipids with sugars
Ships decorated proteins/lipids to destination