Nanotube bridge networks grow between the most abundant photosynthetic bacteria in the oceans, suggesting that the world is ...

You're not alone if you have questions about fluoride in your water supply. We reached out to experts to get answers.

Cell membrane Allows gases and water to diffuse freely into and out of the cell. Controls the transport of other molecules. Mitochondrion (plural is mitochondria) Contains enzymes for the ...

Many cells in multicellular organisms are specialised. They have specific roles in the organism of which they are part. Their structure is adapted to their function. They are often grouped ...