0
What transports oxygen and carbon dioxide across the capillary membrane?
Wiki User
∙ 11y ago
Concentration gradient moves oxygen and carbon dioxide across the alveolar membrane.
Blood that enters the alveolus has a higher concentration of carbon dioxide compared to the air in our lungs; so the carbon dioxide literally falls out of the blood and into the air. Blood that enters the alveolus has a lower concentration of oxygen than the air in our lungs, so the oxygen falls into solution with our blood and is carried back to the heart for distribution to our bodies. This process is passive, meaning that no energy is required for the gasses to move. They are merely seeking to equalize their own concentrations across a semi-permeable membrane. This passive diffusion drives many processes in our bodies.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoBicarbonate ion
Add your answer:
Earn +20 pts
What effect does the leaking of potassium across the membrane have on the membrane potential of Kevin's neurons?
It makes the inside of the neurons more negative.
The process by which H2O diffuses across a membrane?
This process is called osmosis.
What hydrogen ion pumps do?
also referred to as "Chemiosmotic Synthesis of ATP", hydrogen ions are removed from one side of the membrane to another. (inside to out), generating a proton gradient across the membrane. So we have a high concn of H+ ions outside the cell membrane. This causes the H+ ions in urgent need to get back inside with diffusion, thus protons move across membrane through special channels. Their passage drives the synthesis of ATP as well. btw this is also Active Transport. (ATP from cell is required).
Why does expired air contain more carbon dioxide than inspired air?
I did not quite get this, but if this helps, good. ( this is from my biology book)"Carbon dioxide is made by cells as a waste product of respiration, and is released across the gaseous exchange surface"
Does Potassium ions move across the same gradient as sodium ions?
Yes, because they are part of an active-transport system that requires the use of ATP energy.
How is diffusion used when cells remove carbon dioxide?
Carbon dioxide moves out of the cells from a higher to lower concentration across the cell membrane. Then the CO2 moves through the capillary wall across the diffusion gradient. The diffusion process is repeated at the capillary/alveolar junction.
What causes oxygen to enter and carbon dioxide to leave the capillaries?
Oxygen and carbon dioxide get into and out of cells via diffusion. The gases diffuse across the thin capillary wall, and then diffuse across the cell membrane.
What are the example of work?
ATP transports energy across a cells membrane
What are the example of transport work?
ATP transports energy across a cells membrane
Which process describes the pushing of water across the capillary (blood vessel) membrane?
Osmosis
How does the cell transport materials across the cell membrane?
a cell transports things across the cell membrane from areas of high concentration to ares of low concentration
Describe the exchange of substances across the capillary cell membrane?
Capillary exchange... You have a higher blood pressure and a lower osmotic pressure at the arteriole end of the capillary, this causes water to leave the capillary. The gases oxygen and carbon dioxide and nutrients like glucose and amino acids follow their concentration gradients and diffuse across the capillary membrane. At the venule end of a capillary your blood pressure is less than that of osmotic pressure and water returns to the capillary.Hope this helped. I'm Looking for diagrams of this same thing. Any ideas?Here is a website I found that might help out too.http://www.mhhe.com/biosci/esp/2002_general/Esp/folder_structure/tr/m3/s10/trm3s10_2.htm
What is exchange between plasma and interstitial fluid compartments that takes place across the capillary membrane?
gas exchange
What two important gases diffuse across the respiratory membrane?
oxygen and carbon dioxide
How simple diffusion can be distinguished from facilitated diffusion?
simple diffusion transports smaller molecules like oxygen and water while facilitated diffusion transports larger molecules like glucose and requires energy
What is the process called in which oxygen enters the body and carbon dioxide exits the body?
Oxygen and carbon dioxide travel into and out of the bloodstream via diffusion across alveolar and capillary membranes.
How carbon dioxide water and sodium ions are transported across the cell membrane by both passive and active transport?
Carbon dioxide cannot be transported across the membrane by passive transport. However, water and sodium ions can be transported using passive transport.
