Molecular oxygen (O2), which is required for the production of ATP by mitochondria, must pass through at least three membranes to get to the enzymes where it is used. O2 is also produced in chloroplasts and must pass through at least four membranes to be released from the plant. How does O2 move across biological membranes? 1) There are numerous protein transporters that allow O2 to travel across membranes. 2) O2 is nonpolar, and very small, so it can diffuse across the membrane. 3) O2 undergoes a chemical reaction that binds it to other substances that are transported across the 4) membranes. 5) O2 is hydrophilic and travels with water across the membranes.
Added by Soledad M.
Close
Step 1
So, this option is not correct. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 78 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
1. The role of Oxygen in Oxidative Phosphorylation acts to a. oxidize NADH. b. oxidize ADP to form ATP. c. oxidize FADH2. d. remove electrons from the electron transport chain. e. remove H+ ions from the intermembrane space. 2. Photophosphorylation is the result of a. photons acting on ADP. b. electrons that reduce an acceptor. c. photons acting on ADP + Pi. d. photons that split H2O into O2, 2e- and 2H+. e. chemiosmosis of 2H+ ions from H2O. Cyclic photophosphorylation a. removes electrons from sugar. b. creating a proton gradient. c. requires an outside source of electrons. d. puts O2 in the atmosphere. e. breaks H2O for protons.
Md.Daniyal A.
Why is oxygen necessary during aerobic cellular respiration? The oxygen molecules allow NADH and FADH2 to release electrons which will move through the electron transport chain. The oxygen is what creates a high concentration of H+ ions in the intermembrane space. Oxygen catches loose electrons from the Electron Transport Chain and makes H2O. Oxygen creates the most amount of ATP for the cell.
Maitreya E.
Molecular oxygen, O2, plays a vital role in aerobic cellular respiration. Explain the role of oxygen in the electron transport chain and comment on why it is thermodynamically favorable for oxygen to serve in that role.
Adi S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD