BIOS251 Chamberlain Exam 2 Questions
And All Correct Answers.
passive transport - Answer Does not use ATP as an energy source; from givh to low
concentration
simple diffusion - Answer Moves along concentration gradient; from high to low concentration
Osmosis - Answer Movement of water across semipermeable membrane; low to high
concentration
Hypertonicity - Answer Solutions have high ECF osmolarity; water moves out of cell; cell
shrinks
Isotonicity - Answer Solutions have the same osmolarity; no movement of water in or out of
cell
Hypotonicity - Answer Solutions have low ECF osmolarity; water moves into cell; swelling
Simple diffusion example - Answer O2 gas moves from high oxygenated blood into oxygen
poor cells
facilitated diffusion example - Answer Glucose from the blood enters a low glucose cell
through a glucose channel protein
Osmosis example - Answer Water from urine will move into kidney cells
Active transport - Answer Uses energy to move substances against the concentration
gradient ; low to high concentration; ATP NEEDED
bulk transport - Answer Used vesicles to transport large molecules
Endocytosis - Answer Transports materials into cells
, Exocytosis - Answer Transports materials out of cell
intracellular fluid - Answer Also known as cytosol; more gel like that ECF
Extracellular fluid (ECF) - Answer Sometimes called "tissue fluid" includes plasma
Uneven distribution of ions across the membrane is controlled by - Answer Protein pumps and
leak channels resulting in positive ions outside of cell and negative ions inside the cell
Resting membrane potential (RMP) - Answer Uneven distribution of ions across a membrane
resulting in voltage known as (RMP)
selective movement of ions - Answer Across membrane only allows ions to move in ONE
direction
Sodium potassium pump - Answer -Moves 3 sodium ions and 2 potassium ions into cell
- Creates a more negative charge in the cell
-muscle and nervous system rely on it
Depolarization - Answer Na+ channels open and Na+ enters cell making it more positive
Repolarization - Answer Na+ channels close, K+ channels open, K+ rushes out of cell
Nucleus - Answer Genetic control center of the cell; directs protein synthesis; storage for DNA;
site of DNA replication and transcription
Rough ER - Answer Site of protein and lipid synthesis
Smooth ER - Answer lipid synthesis
Ribosomes - Answer Synthesis protein
And All Correct Answers.
passive transport - Answer Does not use ATP as an energy source; from givh to low
concentration
simple diffusion - Answer Moves along concentration gradient; from high to low concentration
Osmosis - Answer Movement of water across semipermeable membrane; low to high
concentration
Hypertonicity - Answer Solutions have high ECF osmolarity; water moves out of cell; cell
shrinks
Isotonicity - Answer Solutions have the same osmolarity; no movement of water in or out of
cell
Hypotonicity - Answer Solutions have low ECF osmolarity; water moves into cell; swelling
Simple diffusion example - Answer O2 gas moves from high oxygenated blood into oxygen
poor cells
facilitated diffusion example - Answer Glucose from the blood enters a low glucose cell
through a glucose channel protein
Osmosis example - Answer Water from urine will move into kidney cells
Active transport - Answer Uses energy to move substances against the concentration
gradient ; low to high concentration; ATP NEEDED
bulk transport - Answer Used vesicles to transport large molecules
Endocytosis - Answer Transports materials into cells
, Exocytosis - Answer Transports materials out of cell
intracellular fluid - Answer Also known as cytosol; more gel like that ECF
Extracellular fluid (ECF) - Answer Sometimes called "tissue fluid" includes plasma
Uneven distribution of ions across the membrane is controlled by - Answer Protein pumps and
leak channels resulting in positive ions outside of cell and negative ions inside the cell
Resting membrane potential (RMP) - Answer Uneven distribution of ions across a membrane
resulting in voltage known as (RMP)
selective movement of ions - Answer Across membrane only allows ions to move in ONE
direction
Sodium potassium pump - Answer -Moves 3 sodium ions and 2 potassium ions into cell
- Creates a more negative charge in the cell
-muscle and nervous system rely on it
Depolarization - Answer Na+ channels open and Na+ enters cell making it more positive
Repolarization - Answer Na+ channels close, K+ channels open, K+ rushes out of cell
Nucleus - Answer Genetic control center of the cell; directs protein synthesis; storage for DNA;
site of DNA replication and transcription
Rough ER - Answer Site of protein and lipid synthesis
Smooth ER - Answer lipid synthesis
Ribosomes - Answer Synthesis protein
