The skin synthesizes a precursor of CALCITRIOL in response to UV radiation in sunlight.
Calcitriol is also called Vitamin D3; it is the hormonally active metabolite of Vitamin D. It is used as drug to treat bone disorder, hyperthyroidism and calcium deficiency.
They are carried out by proteins
Answer:
Globular cluster
Explanation:
A globular cluster is a spherical collection of stars. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and high stellar densities toward their centers.
Answer:
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
The roots absorb water and minerals from the soil and anchor the plant in the ground. The stem supports the plant above ground, and carries the water and minerals to the leaves. The leaves collect energy from the Sun and make food for the plant, using an amazing process called photosynthesis.
Explanation: