Discover answers to your most pressing questions at Westonci.ca, the ultimate Q&A platform that connects you with expert solutions. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

How would oxygen (O₂) molecules cross a cell membrane (going down their concentration gradient)?
1) simple diffusion
2) facilitated transport using channel/carrier proteins
3) bulk transport using vesicles
4) active transport using a pump protein


Sagot :