Asked in ScienceBotany or Plant BiologySunflowersThe Difference Between
Botany or Plant Biology
The Difference Between
What is a raphe in the seeds?
Asked in Oral Health and Dental Care, Definitions
What is the definition of raphe?
Since you are in the dental section, I assume you mean palatine raphe. That is the line or ridge at the roof of your mouth that runs from the back of your palate to behind your front teeth. The ridge is there because your palate formed in two separate pieces and the ridge (or raphe) is where the two joined together. Definition: The line of union of 2 contiguous, bilaterally symmetrical structures.
Asked in Biology, Invertebrates, Protists
How do diatoms move about?
Pennate diatoms can glide when they are resting on a substrate. They move pretty smoothly and can back up if they hit an obstruction. The Diatoms have a hole on the silica shell called the raphe. Somehow strands of material from the raphe help the diatom move along a surface. The process is not well understood but it does involve the same proteins (actin and myosin) that make human muscles move.