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
Any one of you at least answer one question please?
zalisa [80]

Answer:

B. Major types of fossil fuels: coal, oil and natural gas

Explanation:

7 0
3 years ago
Read 2 more answers
PLSSSS HELP ASAP
Nastasia [14]

Answer:

Reproductive System

All the body systems have one role or the other to play in digestion and absorption. Even the excretory system removes waste and toxins from the body, leaving the useful materials.

However, the reproductive system is not actively involved in digestion.

8 0
3 years ago
To amplify and express a gene of interest, it must first be cut out of the chromosomal DNA and inserted into what? A) restrictio
Papessa [141]

The right answer is C) vector

In molecular biology and genetic engineering, vectors are DNA molecules that allow the propagation of sequences of interest. These are chimeric DNA molecules such as plasmids or artificial bacterial chromosomes, containing an origin of replication and one or more genetic markers. The origin of replication allows the maintenance of the vector in the target cell during generations.

5 0
3 years ago
Read 2 more answers
What happens when the parasympathetic nervous system is activated
kolezko [41]

Answer:

Body functions stimulated by the parasympathetic nervous system (PSNS) include sexual arousal, salivation, lacrimation, urination, digestion, and defecation. The PSNS primarily uses acetylcholine as its neurotransmitter. Peptides (such as cholecystokinin) may also act on the PSNS as neurotransmitters. The parasympathetic nervous system is composed mainly of the cranial and sacral spinal nerves.

Hope this helps! If so please mark brainliest!

6 0
2 years ago
Fiona wants to use the scientific method to answer the question “Do oxygen levels in the air affect rates of photosynthesis?” Sh
SVEN [57.7K]
Create a hypothesis read more information then see if her answer was correct
3 0
3 years ago
Read 2 more answers
Other questions:
  • A satellite in a 24-hour circular orbit with non-zero tilt angle (slight tilt away from the equatorial plane of Earth) will appe
    12·1 answer
  • A man who is an achondroplastic dwarf with normal vision marries a color-blind woman of normal height. the man's father was six
    13·1 answer
  • How will this mutation affect the golden retriever puppy?
    5·1 answer
  • I don't understand either graph....
    6·1 answer
  • Why is it important that an experiment include a control group?
    8·1 answer
  • Crosses and ________ appear on the gables of the borgund stave church in norway (fig. 15- 14 to guard the church and its congreg
    14·1 answer
  • Which of the following are part of the ocean's ecosystems?
    12·2 answers
  • Explain how the process of diffusion works and what is needed to make it work
    7·1 answer
  • How does tempurature and ph affect enzymes?
    9·2 answers
  • How is the function of the mitochondrion important for the role of the ribosome in a eukaryotic cell?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!