The 4 points of cell theory - Correct Answers 1. cell= basic unit of life
2. Functioning depends on functioning of cells
3. structure of organism has cellular base
4. cells can only come from other cells
How many cells are in the human body? - Correct Answers Trillions
What are the three parts of the cell? - Correct Answers 1. Plasma membrane
2. cytoplasm
3. nucleus
How are phospholipiods arranged to act as a barrier? - Correct Answers hydrophobic and hydrophilic
parts creates the barrier to water soluble moolecules
3 components of the cell membrane - Correct Answers 1. Phospholipids
2. membrane proteins
3. cholesterol
what stabilizes the cell membrane? - Correct Answers cholesterol molecules
what does it mean to say that the cell membrane is a fluid mosaic? - Correct Answers It means that the
plasma membrane is exceedingly thin (7-10nm) structure composed of a double layer, or bilayer, of lipid
molecules with protein molecules "plugged into" or dispersed in it.
what are the two types of proteins that are attached or imbedded in the cell membrane? - Correct
Answers ontesral : peripheral
give 6 examples of membrane functions - Correct Answers transport; receptors for signal
, transduction; attachment to cytoskeleton in extracellular metrix
enzymatic activity; intercellular joining
Tight junction - Correct Answers They're flushed --> proteins are tigh
Desomosomes - Correct Answers looser anchor junctory; for flexibility
Gap junctions - Correct Answers sends stimulus; makes a pore between adjacent cells
Passive transport - Correct Answers no energy; naturally occurring
Active transport - Correct Answers requires energy; not naturally occurring;
Simple diffusion - Correct Answers non-polar and lipid soluble substances
facilitated diffusion - Correct Answers Transport of glucose, amino acids, and ions
Transported substances bind carrier proteins or pass through protein channels
osmosis - Correct Answers Diffusion of water across a semipermeable membrane from
High Concentration to Low Concentration
isotonic - Correct Answers balanced blood cell
hypertonic - Correct Answers high salt inside, RBC shrinks spiky looking
Hypotonic - Correct Answers Cells swell and become rounded low salt inside
2. Functioning depends on functioning of cells
3. structure of organism has cellular base
4. cells can only come from other cells
How many cells are in the human body? - Correct Answers Trillions
What are the three parts of the cell? - Correct Answers 1. Plasma membrane
2. cytoplasm
3. nucleus
How are phospholipiods arranged to act as a barrier? - Correct Answers hydrophobic and hydrophilic
parts creates the barrier to water soluble moolecules
3 components of the cell membrane - Correct Answers 1. Phospholipids
2. membrane proteins
3. cholesterol
what stabilizes the cell membrane? - Correct Answers cholesterol molecules
what does it mean to say that the cell membrane is a fluid mosaic? - Correct Answers It means that the
plasma membrane is exceedingly thin (7-10nm) structure composed of a double layer, or bilayer, of lipid
molecules with protein molecules "plugged into" or dispersed in it.
what are the two types of proteins that are attached or imbedded in the cell membrane? - Correct
Answers ontesral : peripheral
give 6 examples of membrane functions - Correct Answers transport; receptors for signal
, transduction; attachment to cytoskeleton in extracellular metrix
enzymatic activity; intercellular joining
Tight junction - Correct Answers They're flushed --> proteins are tigh
Desomosomes - Correct Answers looser anchor junctory; for flexibility
Gap junctions - Correct Answers sends stimulus; makes a pore between adjacent cells
Passive transport - Correct Answers no energy; naturally occurring
Active transport - Correct Answers requires energy; not naturally occurring;
Simple diffusion - Correct Answers non-polar and lipid soluble substances
facilitated diffusion - Correct Answers Transport of glucose, amino acids, and ions
Transported substances bind carrier proteins or pass through protein channels
osmosis - Correct Answers Diffusion of water across a semipermeable membrane from
High Concentration to Low Concentration
isotonic - Correct Answers balanced blood cell
hypertonic - Correct Answers high salt inside, RBC shrinks spiky looking
Hypotonic - Correct Answers Cells swell and become rounded low salt inside
