Which mechanism requires energy?

Last Update: April 20, 2022

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Asked by: Lupe DuBuque
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Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.

Which type of transport requires energy?

During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

Which of the following transport mechanisms requires energy?

Transports like diffusion, facilitated diffusion and osmosis do not require energy. Active transports like phagocytosis, exocytosis, require energy.

Which mechanism requires energy exocytosis diffusion of oxygen into a red blood cell diffusion of ions through a potassium channel osmosis?

Answer Expert Verified

The answer is exocytosis. Exocytosis is the opposite process to endocytosis. In exocytosis, cell transports molecules, such as proteins, out of the cell and this process requires energy.

What type of molecular movement requires energy?

Some molecules even need an input of energy to help get them across the cell membrane. The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport.

Why Are You Alive – Life, Energy & ATP

41 related questions found

What are the 4 types of membrane transport?

Basic types of membrane transport, simple passive diffusion, facilitated diffusion (by channels and carriers), and active transport.

What are 3 examples of passive transport?

Three common types of passive transport include simple diffusion, osmosis, and facilitated diffusion.

What are the 3 types of diffusion?

The three types of diffusion are - simple diffusion, osmosis and facilitated diffusion.
  • (i) Simple diffusion is when ions or molecules diffuse from an area of high concentration to an area of low concentration.
  • (ii) In osmosis, the particles moving are water molecules.

What are the 3 types of active transport?

Types of Active Transport
  • Antiport Pumps. Active transport by antiport pumps. ...
  • Symport Pumps. Symport pumps take advantage of diffusion gradients to move substances. ...
  • Endocytosis. ...
  • Exocytosis. ...
  • Sodium Potassium Pump. ...
  • Sodium-Glucose Transport Protein. ...
  • White Blood Cells Destroying Pathogens.

What is osmosis with diagram?

Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution (high concentration of water) to a concentrated solution (low concentration of water). In the diagram, the concentration of sugar is initially higher on the right side of the membrane.

Which types of transport do not require energy?

The simplest forms of transport across a membrane are passive. Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane.

What process does not require energy?

Three transport processes that do not require energy are; diffusion, osmosis and facilitated diffusion.

Which transport process is the main mechanism?

Which transport process is the main mechanism for the movement of most macromolecules by body cells? Receptor-mediated endocytosis.

Which type of transport does not require ATP?

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

What type of transport is osmosis?

Osmosis is a type of simple diffusion in which water molecules diffuse through a selectively permeable membrane from areas of high water concentration to areas of lower water concentration.

What are examples of active transport?

Active transport is usually associated with accumulating high concentrations of molecules that other cell needs such as ions glucose and amino acids Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into dark hair cells of plants.

What are 2 types of active transport?

Active transport requires cellular energy to achieve this movement. There are two types of active transport: primary active transport that uses adenosine triphosphate (ATP), and secondary active transport that uses an electrochemical gradient.

What are the 3 characteristics of active transport?

Terms in this set (5)
  • Active Transport. requires energy (ATP)- movement of material against their concentration gradient, from areas of lower concentration to areas of high concentration.
  • Endocytosis. Cells ingest substances.
  • Exocytosis. ...
  • Protein Pump. ...
  • Sodium Potassium Pump.

Why is energy needed for active transport?

Active transport requires energy because it is not a passive process. The molecule has to go against the concentration gradient. Hence it requires energy to be carried by the carrier proteins.

What are the 2 types of diffusion?

Diffusion can be classified into two main types: Simple diffusion and facilitated diffusion.

Where is diffusion used in living organisms?

Examples of diffusion in living organisms

Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.

How is perfume an example of diffusion?

Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere. A drop of food coloring diffuses throughout the water in a glass so that, eventually, the entire glass will be colored.

What are the 6 types of transport?

Therefore; an essential part of transportation management lies in building an efficient supply chain from the six main modes of transportation: road, maritime, air, rail, intermodal, and pipeline.

What is a passive form of transport?

Passive transport is defined as movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.

What is a positive transport?

noun. the movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy.