1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Minchanka [31]
3 years ago
9

Facilitated diffusion requires

Biology
2 answers:
KiRa [710]3 years ago
8 0

Answer:

<h3>A. </h3>

Explanation:

<h3>Tutorial</h3><h3>Diffusion</h3><h3>Diffusion means that the net movement </h3><h3>of particles (molecules) is from an area of high concentration to low concentration.</h3>

<h3>Graph of the simple and facilitated diffusion taking into account the rate of uptake and the concentration</h3>

<h3>If the particles can move through the lipid bilayer by simple diffusion, then there is</h3><h3> no limit to the number that can fit </h3><h3>through the membrane. The rate of diffusion increases linearly as we add </h3><h3>more particles to one side of the membrane.</h3>

<h3>If the particles can only pass through protein channels, then the rate of </h3><h3>diffusion is determined by the number of channels as well as the number of particles.</h3>

<h3>Once the channels operate at their maximal rate, a further increase in </h3><h3>particle numbers no longer increases the apparent rate of diffusion. At this limited rate we describe the protein channel as being saturated.</h3>

<h3>The cartoon illustrates several points about facilitated diffusion. The particles are more concentrated on one side of the membrane, and yet they can move in both directions. However, the net movement is from high particle concentration to low. If the number of particles gets so high on one side of the membrane that they</h3><h3> interfere with diffusion through the </h3><h3>protein channel, then we observe a limit to the rate of diffusion at the point of saturation.</h3>

<h3>Illustration of facilitated diffusion</h3><h3>animation used with permission of the Virtual Cell Web Page</h3><h3>Problem 7 | Answer | Problem 8</h3><h3>The Biology Project > Cell Biology > Cell Membranes > Problem Set</h3>

<h3>The Biology Project</h3><h3>Department of Biochemistry and Molecular Biophysics</h3><h3>University of Arizona</h3><h3>May 2002</h3><h3>Revised: August 2004</h3><h3>Contact the Development Team</h3>

<h3>Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a </h3><h3>concentration gradient; facilitated </h3><h3>diffusion moves materials with and against a concertion gradient. </h3>

Rasek [7]3 years ago
5 0

Answer:

C. a concentration gradient, a protein channel, and no energy.

Explanation:

Facilitated diffusion requires a concentration gradient, a protein channel, and no energy.

You might be interested in
What is the result of telophase 1 and cytokinesis?
Greeley [361]

The result of Telophase 1 and Cytokinesis is two haploid daughter cells that are genetically different from the original cell.

3 0
3 years ago
Read 2 more answers
Which statement most likely describes the daughter cells produced?
Naddik [55]

You're gonna have to give us a picture to support your question..

8 0
3 years ago
7. After grazing on grass, a rabbit is eaten by a snake. The snake also eats a mouse later that day. Which of the following stat
bekas [8.4K]

A. The mouse and the rabbit are in separate food chains but the same food web.

4 0
2 years ago
Enzymes are proteins that speed up reactions by what energys
sdas [7]
Enzymes are biological catalysts. Catalysts work by lowering the amount of energy required to set off a chemical reaction.
4 0
3 years ago
Which natural forces can weather and erode rock?
andreyandreev [35.5K]

glaciers, rivers.wind

4 0
2 years ago
Read 2 more answers
Other questions:
  • Why does the rotation of earth require people to establish time zones?
    5·2 answers
  • What is thought to be true about the three domains of living things
    12·1 answer
  • Which mineral will effervesce when exposed to dilute acid?
    13·1 answer
  • A normal father marries woman who is a carrier for duchenne's muscular dystrophy, a recessive sex linked disorder. Any male chil
    15·1 answer
  • Does 68% of the electrical energy in the United states produced by nuclear fuel
    10·1 answer
  • (GIVING BRAINLIEST!!)
    5·1 answer
  • A virus causes an illness that includes the following symptoms: headaches, fever, and body aches. Symptoms usually occur two to
    15·1 answer
  • Which of the following best describes the difference between a plant cell and an animal cell?
    7·1 answer
  • What is the best name for this molecule?<br> maltose<br> sucrose<br> fructose<br> glucose
    14·1 answer
  • Need help please with this
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!