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
IrinaVladis [17]
3 years ago
9

When the facilitated diffusion necessary

Biology
2 answers:
Vlad1618 [11]3 years ago
8 0

Answer:

When the molecules size are large, and they are insoluble in lipids, at this time facilitated diffusion is necessary to transport such molecules across the plasma membrane.

Explanation:

Facilitated diffusion is one type of passive transport. It occurs from higher concentration to lower concentration. This diffusion depends on the size of the particle, the solubility of the membrane. The smaller size particles can move faster across the membrane but the bigger particles can't pass the plasma membrane. Another fact is the entire plasma membrane is made up of lipids. It can't allow the lipid insoluble particles to the membrane. For this, there is a special facility to carry such polar molecules like water, such as channels, carrier proteins, porins. These channels facilitate the bigger polar molecules to enter into the membrane and cross the membrane. The enzymes like permease act as channel proteins that bind with the bigger particles and carry them through the channels. This type of diffusion also needs ATP like passive diffusion.

andrey2020 [161]3 years ago
7 0

In biology, diffusion is the movement of substances with the concentration gradient, which means they move from an area of high concentration to an area of low concentration. Facilitated diffusion is diffusion that is performed with the help of a carrier protein that can move particles of the substance.

You might be interested in
Do plants break down glucose to obtain energy?
Rzqust [24]
2nd choice is the correct one
3 0
2 years ago
2. What is an important base of variation in species? Are all forms of a gene the same?
bearhunter [10]
I don’t know sorry but you can search on google or safari and see for icivics and it would help you
8 0
3 years ago
The ocean’s surface temperature varies with latitude and
BabaBlast [244]
C Time of year I just took the quiz.
6 0
3 years ago
Read 2 more answers
The phases of the moon are caused by the sun is wearing distance from the moon moon’s revolution around the earth moves very dis
Inga [223]

Answer:

October 17, 2019

The Moon, otherwise known as Luna, is the only natural satellite of Earth. It was created 4.6 billion years ago, and it is widely accepted that it was created when Earth collided with a planet-sized object called Theia. It’s the fifth-largest moon in our solar system and is the second brightest object in the sky (after the Sun).

Explanation:

History of The Moon

Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies.

The Moon, of course, has been known since prehistoric times. It is the second brightest object in the sky after the Sun. As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moon’s phases. The time between successive new moons is 29.5 days (709 hours), slightly different from the Moon’s orbital period (measured against the stars) since the Earth moves a significant distance in its orbit around the Sun in that time.

5 0
3 years ago
Which of the following is the correct order in which toxic nitrogen compounds are converted to less toxic nitrogen compounds in
alex41 [277]

The order in which toxic nitrogen compounds are converted to less toxic nitrogen compounds in the nitrogen cycle is NH3 ----> NO2-   -----> NO3-

The nitrogen cycle refers to the movement of nitrogen in the ecosystem. The process of converting nitrogen into less toxic forms of nitrogen which is useful to plants is called nitrification.

During the process of nitrification, ammonia or ammonium is first converted to nitrates by the action of the microorganism called nitrosomonas. Nitrobacter converts nitrites to nitrates which are useful to plants.

Hence, the order in which toxic nitrogen compounds are converted to less toxic nitrogen compounds in the nitrogen cycle is NH3 ----> NO2-   -----> NO3-

Learn more: brainly.com/question/1245871

5 0
2 years ago
Other questions:
  • LORAN-C:
    12·2 answers
  • The structure that supports the organ of corti is the
    15·1 answer
  • Diatoms have cell walls composed of _____.
    10·2 answers
  • What did antione lavoisier do (what was his work)
    5·2 answers
  • Three students test the effect of fertilizer on bean plant
    12·2 answers
  • Explain how human activities can intensify, or even cause a landslide
    15·2 answers
  • Which of the following is a monosaccharide?
    5·2 answers
  • Different characteristics between members of the same species are called?
    15·1 answer
  • gnoring all other factors, what kind of day would result in the fastest delivery of water and minerals to the leaves of an oak t
    7·1 answer
  • Assign the various toppings you put on pizza to the appropriate domains and kingdoms. ...
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!