PSC GK

Phytochrome

 Phytochrome is a photoreceptor, a pigment that plants use to detect light

  phytochrome is a protein

Mannitol

 Mannitol (also referred to as mannite or manna sugar) is a white, crystalline solid with the chemical formula C₆H₈(OH)₆.

 It was originally isolated from the secretions of the flowering ash and called manna after its resemblance to the Biblical food.

 In plants, it is used to induce osmotic stress. 

It has several industrial uses, but is mainly used to produce tablets of medicine

 Mannitol increases blood glucose to a lesser extent than sucrose (thus having a relatively low glycemic index) and is therefore used as a sweetener for people with diabetes, and in chewing gums

 

Titan

Titan (moon)

•  Titan (or Saturn VI) is the largest moon of Saturn

•   It is the only natural satellite known to have a dense atmosphere

•   It is the second-largest moon in the Solar System, after Jupiter's moon Ganymede

•  Titan was the first known moon of Saturn

•  Discovered by Christiaan Huygens

•  Discovery date March 25, 1655

Size comparison: Titan in infrared (lower left) with the Moon and Earth (top and right)