Answered: what is the importance of membrane…

what is the importance of membrane transport and what are the values that you need to develop after knowing the importance of it?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 4TYK: A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot...

See similar textbooks

Related questions

Q: 5. A particular amino acid is transported from the extracellular medium against its concentration…

A: The plasma membrane of the cell is the selective barrier that regulates transportation of different…

Q: Describe the prevailing model of cell membrane structure and how the macromolecules that form them…

Q: 5. Active transport allows cells to maintain higher concentrations of many different molecules than…

A: Membrane transport of polar or charged species requires additional help from channels or transporter…

Q: 34) The RNA that has an anticodon and attaches to a specific amino acid is RNA. 35) T/F Buffers…

A: Note - according to our guidelines we are supposed to answer only one question. RNAs carrying the…

Q: 47. When a scientist perceives substance moving from an area of high to low concentration, which…

A: Transport of substances in and out of the cell is important. It is a highly selective process and…

Q: Passive transport: What are they and examples for each 1. Mechanical 2. Voltage 3. Ligand:

A: Passive transport is a mode of membrane transport where no energy is utilized for the transportation…

Q: 8. Which of the following is not a feature of voltage-dependent ion channels? A. It has a…

A: In order for nutrients to be taken in, waste to be removed, and cells to communicate with one…

Q: Choose between parentheses 1-Only when the water moves by itself from high concentration gradient…

A: The permeability of most of the biological membranes is more for the water ions as compared to the…

Q: Secondary active transport … A. Moves a molecule against its chemical gradient but with its…

A: All living cells, must get a supply of essential substances like nutrients electrolytes, water, etc.…

Q: one reason active transport has a limited maximum transport rate at which it can progress is due to…

A: Transportation is essential for cells because it enables the movement of molecules and ions that are…

Q: Which feature is typical of primary active transport? The transport protein must cross to the…

A: Proteins, carbohydrates, and phospholipids make up the plasma membrane. The membrane is selectively…

Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

1.what is the importance of membrane transport and what are the values that you need to develop after knowing the importance of it?

2.what can happen when an organism lacks the necessary enzymes?

3.how do enzymes aid in harnessing the energ from the food we eat?

4.how are the enzyme activity affected by concentration of substrate, changes in temperature, and ph?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

9. Match each of the following statements related to membrane transport processes to the appropriate term: passive transport, facilitated transport, active transport. More than one term may apply in a given situation. _a. Movement across the membrane is against the concentration gradient. _b. Proteins serve as "gates." _c. Expenditure of cellular energy is required. _d. Movement across the membrane is from a high to a low concentration.
1. Examine each one and discuss it's function in a cell membrane. Determine if you think each one is involved in passive or active transport, and if it is active determine the most likely source of energy. Protein Name Active or passive? Energy source? K+ high K+ low Potassium Channel ATP H+ high H+ low Proton Pump Na+ high Na+ low ATP K+ low K+ high Na+ - K+ Pump Proline Low Na+ high Proline high Na+ - Proline Cotransporter Na+ Low H+ high H+ low Sucrose low Sucrose high H+ - Sucrose Cotransporter
5. A particular amino acid is transported from the extracellular medium against its concentration gradient. The integral membrane protein that transports the amino acid also binds and transports Na*. Using your model of the cell membrane, develop a transport mechanism that will permit the amino acid uptake to be coupled to the Na* transport so that the amino acid's entry is linked only indirectly to ATP hydrolysis.
7. Which of the following membrane transport proteins would you expect to be the most selective (although not the most rapid)? the bicarbonate ion channel the glucose carrier protein the potassium ion channel the chloride ion channel the sodium ion channel
4. The normal osmolarity and glucose level of plasma are 300mmol/L and 1g/L, respectively. Estimate the difference between the osmotic pressure of the plasma of a diabetic patient, who has a glucose level of 8g/L, and a patient that has a normal glucose level. Provide the result in atmospheres and meters of water. Ignoring possible physiological compensation mechanisms, what would you expect to happen to the body cells? How would the cells compensate if they could?
8. Define homeostasis. maintoining nterral balance 9. What role does the cell membrane play in maintaining homeostasis? 10. How is facilitated diffusion different from diffusion? How are they similar? 11. List two ways that active transport is different than passive transport. 1) 2) 12. Why is the sodium-potassium pump considered an active transport? Which direction are the sodium and potassium bing pumped? How many sodiums are being pumped? How many potassiums are being pumped?
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
13.Write LEFT or RIGHT to indicate the direction of the movement of water in the following cells Pure water 10% sucrose 15% glucose (85% water) 5% glucose (95% water) 10% fructose 20% fructose (95% water) ☐ 13.1. 13.2. 13.3. 13.4. What type/s of membrane transport is/are shown in the processes above? 13.5. What structure or characteristic gives the biological membrane selective permeability?
23.Summarize the steps that occur to set up secondary transport (co-transport) and during co-transport. Practice by drawing in circled numbers in the images below to match the steps I have summarized below. [Gluc [Na] low Na high Na ATP 1. Three Na' ions inside the cell move OUT of the cell, across the Na*K* pump, from a low to a high concentration (AGAINST their concentration gradient). This requires the energy of ATP. This sets up the concentration gradient needed in the next step (the next step requires a low Nation concentration INSIDE the cell) 2. Nations in the interstitial fluid = extracellular fluid (fluid surrounding the cell) move INTO the cell, across a co-transport protein. The ions move from a high to a low concentration (DOWN their concentration gradient). This RELEASES energy. This energy is used in the next step. 3. Glucose in the interstitial fluid moves INTO the cell, across a co-transport protein, from a low to a high concentration (AGAINST their concentration…
1. Fill out the following chart comparing different mechanisms of transport across a plasma membrane: Simple Facilitated Secondary Primary Active Diffusion Diffusion Active Transport Transport Types of molecules transported? (List size, polarity, charge) Requires a carrier or channel protein? (Yes/No) Requires an additional energy source? (Yes/No) Do any molecules travel against their concentration or electrochemical gradients? (Yes/No)
9. Side A of a tube has a glucose concentration of 100 mOsm. Side B has a NaCl concentration of 100 mOsm. Assuming the membrane works as cells do in the body, how will the water move and why? a)
22. Which of the following statements about passive processes of membrane transport is true? a. cellular energy is not required b. substances move along its concentration gradient c. all require the aid of proteins during transport d. a and b e. a and c