A researcher is using a modified version of FRAP. She has devised a technique that allows her to label all the peripheral membra
ne proteins with a fluorescent tag, and has bleached a specific area of the cell membrane. After 24 hours, she notices that fluorescence has returned to the bleached area. What can she deduce from this experiment?A. Peripheral membrane proteins are akin to integral membrane proteins.B. Peripheral membrane proteins may not be permanently associated with the cell membrane.C. Peripheral membrane proteins—like transmembrane proteins—are located within the cell membrane.D. Peripheral membrane proteins can move freely within the cell membrane.E. Peripheral membrane proteins can both move freely within the cell membrane and are akin to integral membrane proteins
FRAP or Fluorescence Recovery After Photobleaching refers to a method of finding the kinetics of diffusion in living cells, generally with the assistance of fluorescence microscopy. The method comprises the labeling of a particular cell constituent with a fluorescent molecule, imaging that cell, photobleach a small section of the cell, then image the recovery of fluorescence with time.
In the given question, as the fluorescence has recovered back to the bleached region. The scientist can come to the conclusion that the membrane of the cell and the peripheral membrane proteins do not always belong together.
So if i understand the question you are asking then this is the answer:
It's asking you to list the people who have contributed to modern biology either with discoveries or theories who are the people who have in recent history helped further modern biology and it's asking you to (in your own words) describe their work and what they did to contribute to it
This makes absolutely no sense... but I'm gonna say the green box is the correct answer... I'm most likely wrong.
I believe the 2nd option is correct specifically because plants reproduce asexually. With the pest species eating the plants, they wouldn't get very far before being eaten. That's really the only negative option, and pests cannot really eat things that sexually reproduce...
Light provides the energy required to drive the process of photosynthesis. The rate of photosynthesis increases as light intensities increase. At high light intensities, much of the light is penetrates through the leaf and is absorbed by the chloroplasts.