https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:pathogens-and-modes-of-transmission/v/infectious-and-non-infectious-diseases-ur 2025-07-31T00:31:02.500734743Z Infectious and non infectious diseases Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Infectious and non infectious diseases Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/g95uniYm3U8.mp4/g95uniYm3U8.mp4 192 Pathogens and modes of transmission https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:pathogens-and-modes-of-transmission/a/common-diseases-in-humans 2021-04-29T08:01:45Z Common diseases in humans Overview of common diseases in humans and the pathogens that cause them. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:from-cells-to-organisms/x230b3ff252126bb6:human-body-systems/a/hs-the-immune-system-review 2024-09-19T19:08:55.413551339Z The immune system review Learn about the cells and functions of the immune system. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:pathogens/e/pathogens 2026-04-02T04:18:15.637466676Z Pathogens Apply your understanding of pathogens in this set of free practice questions aligned to AP standards. exercise