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What type of lipids are found in cell membranes?
Phospholipids are found in the cell membrane, they make up the lipiid bilayer of hydrophilic tails and hydrophobic heads.
If proteins are found in cell membranes, what are the possible funcitons of these proteins?
Adhesion, Communication, Receptor, Recognition, Passive and Active Transport.
What is the Fluid Mosaic Model?
An explanation of cell membarne structure, the membrane has a mixed composition (mosaic) of lipids and proteins, the interactions and motions of which impart fluidity to it.
What is Diffusion?
Diffusion is the net movement of like ions or molecules from a region where they are most concentrated to an adjoining region where they are less concentrated.
What is the process of Endocytosis?
The mechanism by which a patch of plasma membrane balloons inward and forms a vesicle, which sinks into the cytoplasm.
What is metabolism?
All the controlled, enzyme mediated chemical reactions by which cells acquire and use energy as they synthesize, store, degrade, and eliminate substances.
What are the parts of metabolism?
Anabolic and catabolic. Either require a net input of energy for production, or release usable energy.
The two major energy producing pathways are aerobic respiration and fermentation. In what locations does each pathway occur in a cell? Which pathway produces more ATP?
Aerobic respiration is an oxygen dependent pathway. Aerobic produces 36 or more ATP. Fermentation is conducted in the absnce of air. Produces two ATP.
What is the function of NAD and FAD cofactors in aerobic respiration?
They are co-enzymes, they both accept electrons and hydrogen derived from intermediates that form during glucose breakdown.
After the first stage of fermentation the final stage can vary depending on the organism involved. What were the 2 different types of final stages discussed in class?
Alcoholic and Lactate.
What were the end products of the two different types of end stages of fermentation?
Alcohol forms ethyl alcohol, or ethanol. Lactate forms acids, giving food sour tastes.
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