1. Molecular motion: A and D
2. Velocity of molecular movement: B and C
4. Size of pores. Solubility in the lipid portion of the membrane and/or presence of membrane “carriers” for the substance(s).
5. Glucose- (a) move into the sac Albumin- (c) no movement Water- (b) move out of the cell NaCl- (a) move into the celll
7. Hypertonic- C- crenated Isotonic- B Hypotonic- A- hemolysis, bursting open due to swelling
8. A) faster diffusing gas- NH4OH B) Precipitate forms closer to the HCL side.
9) If a cell must use ATP to directly or indirectly transport the molecule it is active transport, if ATP is not needed for the transport it is passive.
10) Passive processes: a, c, e Active- b, d, f
11) The tube was in a dialysis sac which was in water. Since water moves down its concentration gradient it diffused from the beaker into the sac, where its concentration was lower. This caused the fluid column to rise in the tube.
12) Define the following terms: Diffusion: Movement of molecules from an area higher concentration to an area of lower concentration. Osmosis: Diffusion of water through a water permeable membrane from higher concentration to an area of lower water concentration. Simple diffusion: Movement of molecules from higher concentration to a lower concentration. Uses kinetic energy of the diffusing molecules. Filtration: Movement of molecules across a membrane from an area of higher hydrostatic pressure to an area of lower hydrostatic pressure. Active Transport: Transport systems that require the cell to provide ATP. Phagocytosis: Intake of extracellular particles by extending the plasma membrane out around the particle. “Cell eating.” Fluid-phase Endocytosis: Intake of extracellular fluids by vesicle formation. “Cell drinking.”
You May Also Find These Documents Helpful
-
b) Active transport moves molecules up the concentration gradient, low to high concentration. Diffusion goes down the concentration gradient, high to low concentration.…
- 1084 Words
- 5 Pages
Good Essays -
When molecules are passively transported across a membrane, the direction of their movement is dictated by the molecule's tendency to move ________.…
- 1246 Words
- 5 Pages
Satisfactory Essays -
Passive transport is moving biochemical and atomic or molecular substances across the cell membrane but unlike active transport it does not involve chemical energy. Active transport is transporting things from a region of lower concentration to higher concentration, and it uses energy. Depending on whether it needs energy and the transports or places that it goes through will depend on whether it will use active or passive.…
- 376 Words
- 2 Pages
Satisfactory Essays -
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 4: Simulating Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Filtration is a process that You correctly answered: c. is passive. 2. Filtration is dependent upon a You correctly answered: b. hydrostatic pressure gradient. 3. The filtrate You correctly answered: d. All of these answers are correct. 4. An important place that filtration takes place in the body is in You correctly answered: d. the kidneys.…
- 629 Words
- 3 Pages
Satisfactory Essays -
Cell Transport Mechanisms and Permeability 1 EXERCISE 1 OBJECTIVES 1. To define the following terms: differential permeability, passive and active processes of transport, diffusion (simple diffusion, facilitated dif- fusion, and osmosis), solute pump, pinocytosis, and phagocytosis. 2. To describe the processes that account for the movement of sub- stances across the plasma membrane, and to indicate the driving force for each. 3.…
- 4065 Words
- 27 Pages
Powerful Essays -
A. Write a one-paragraph analysis of the results for the procedure. Provide reasons for the difference in the rate of diffusion at the different temperatures.…
- 1354 Words
- 6 Pages
Good Essays -
C. facilitated diffusion, active transport Active transport is where a cell uses energy to move molecules. Facilitated diffusion is the same as diffusion, just when they pass through integral proteins.…
- 602 Words
- 3 Pages
Good Essays -
* Active transport without energy wouldn’t be successful as energy is needed for moving the substances in and out of the cells e.g. by active transport amino acid is being delivered to the blood from the small intestine.…
- 2458 Words
- 10 Pages
Good Essays -
1.Discuss the structure of the plasma membrane and explain the process of active and passive transport through the membrane.…
- 893 Words
- 3 Pages
Good Essays -
Transport Proteins- proteins embeddes in the lipid bilayer which allow needed substances or waste materials to move through the plasma membrane Active vs. Passive Transport active- the transport of material across the concentration gradient - lesser concentration to greater concentration - requires the cell to expend energy passive transport- the passive transport of materials across the plasma membrane by means of transport proteins (facilitated diffusion) Chapter 9 Aerobic vs. Anaerobic aerobic- requires oxygen anaerobic- does not require oxygen Photosynthesis- process by which autotrophs produce simple sugars and oxygens from water and carbon dioxide by using energy absorbed from sunlight by chloroplasts Chlorophyll- traps sunlight Light Reaction- produces ATP and NADPH+ H+ Dark Reaction- produces glucose (must go through 6 cycles to produce glucose) NADP- hydrogen acceptor Cellular Respiration- process by which food molecules are broken down to release energy Glycolysis- the first step (in the cytoplasm) - needs 2 ATP to start process Electron transport- most ATP Breaks down gluclose Hydrogen acceptors-NAD and FAD Chemosynthesis- when photosynethesis can't occur; uses chemicals to produce food Energy- the ability to do work ADP vsafd.…
- 869 Words
- 4 Pages
Good Essays -
9. Why are the proteins that are involved in active transport often called pumps? Because the move substances against their concentration gradient…
- 621 Words
- 3 Pages
Good Essays -
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz.…
- 579 Words
- 3 Pages
Satisfactory Essays -
a. describe the transport process and explain how the organization of cell membranes functions in the movement of specific molecules across membranes, and…
- 4263 Words
- 18 Pages
Good Essays -
A. The difference between facilitated diffusion and active transport is facilitated diffusion goes from a high concentration to a low concentration and it does not require ATP. Active transport goes from a low concentration to a high concentration and requires ATP. In active transport the molecules are carried against the force of diffusion however in facilitated diffusion that energy is not…
- 1931 Words
- 7 Pages
Good Essays -
Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also, membrane thickness is a variable because the thinner the membrane the quicker the diffusion.…
- 1338 Words
- 6 Pages
Good Essays