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
kupik [55]
3 years ago
15

Compare and contrast the mechanisms of getting material across the plasma membranes of cells. Tells me what the mechanisms are i

f they are active or passive transport, how do they function and give me an example of where you would find that mechanisms.
Biology
1 answer:
stepladder [879]3 years ago
8 0

Answer:

Materials get transported from the cell by some mechanisms such as Active Transport, Passive Transport, Diffusion, etc.

Explanation:

Active Transport :

It is a process by which, materials are transported from the extracellular membrane to the intracellular membrane with the help of ATP. It has a few types :  

Primary Active Transport :  

This system is standing upon the sodium-potassium pump. It moves out   Na⁺ from the cell and allows the entry of K⁺ into the cell. In this process ATP is a source of energy. E.g, Sodium-potassium pump.

Secondary Active Transport :

It is mainly standing upon Primary Active Transport. In this process, the main key point is the concentration gradient. There is already a concentration gradient set up by the primary active transport. This system uses that up and moves other substances against their own gradient concentration. E.g, assuming, there is a high concentration of sodium outside the cell,  if a route such as a channel or a carrier protein is open then sodium ions will move into the cell.  In this transport system, some cotransporters are used who move in the sodium ion into the sodium gradient.  

Passive transport :

It is a process by which, substances cross the plasma membrane without acquiring any energy from the cell. Here, no energy is needed because the substances are moving from higher concentration to its lower concentration. E.g, cell membrane or plasma membrane works as a permeable or semipermeable membrane.  

Diffusion :

It is the movement of a substance across a membrane, due to the concentration gradient, without any help from other molecules. E.g, movement of the gaseous molecule from cell to cell.

You might be interested in
Which area of the brain is linked to emotions such as fear.
faust18 [17]

limbic system

Explanation:

center of emotional processing is the amygdala

6 0
2 years ago
Science is best described as a:
Sophie [7]
2. Process to test hypotheses
8 0
2 years ago
What is one of the root causes of environmental problems?
Goryan [66]

Answer:

here are some:

1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods. One of the first principles of free markets is that for them to work effec- tively, the full costs of an activity must be borne by the involved parties.

Explanation:

hope this helps <3

8 0
2 years ago
Which terms are used for gametes that are needed for reproduction in vertebrate animals?
rjkz [21]
The answer is A.Sperm and eggs
5 0
3 years ago
Questions 1 and 2:
olasank [31]

Answer:

a) Scales of pine closes and opens up with the variation in moisture content of air.

b) Cold sunglass meets warm moisture laden air and hence water droplet are suspended on the surface of sunglass.

Explanation:

a) Being a natural hygrometer, pine cone through its physiological activities indicate the presence of humidity in air.

The ridges of the pine consists of scales and the seed is inside it. In a humid environment, the scales absorbs moisture and swell and close the cone. This also prevents the seed from rotting due to excess moisture. With the reduction in moisture content of air, moisture in the  scales of pine cone evaporates and the cone open up.

b) Sunglass gets cold since it is inside the airconditioned temperature of car. When the sunglass is placed outside the car window, moisture laden hot wind strikes the cold sunglass and it suspends its moisture there on the surface of glass as water droplets.

8 0
2 years ago
Other questions:
  • Which is the following is a true statement
    8·1 answer
  • What factors are known to be involved in the control of mitosis?
    9·1 answer
  • During what process is water produced
    13·1 answer
  • 8. Unlike weather, climate
    13·2 answers
  • A rectangle with length 11 feet and width 8 feet. A rectangle with length 4 feet and width 3 feet is cut out of the larger recta
    6·2 answers
  • An increase in the volume of the alveoli would directly result in
    13·1 answer
  • What is the definition these biological terms
    9·1 answer
  • 15. What cancer, for females, is greatly decreasing in trend in death rate over the last 80+
    12·1 answer
  • Use the periodic table to identify the chemical
    15·1 answer
  • What is the typical sign that appears in the early ambulatory stage of Duchenne Muscular Dystrophy
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!