Examlex
You find a star orbiting about the center of the galaxy at a speed of 220 km/s at a distance of 15 kpc. How much mass is within the orbit of that star? You can assume the star is on a circular orbit around the center of the Milky Way.
Steroid Hormones
Biologically active molecules derived from cholesterol that play crucial roles in various body functions, including growth, metabolism, and immune response.
Cholesterol
A waxy, fat-like substance found in the cells of animals that is essential for the formation of cell membranes, certain hormones, and vitamin D.
Amino Acids
Organic compounds that serve as the building blocks of proteins, consisting of both an amino group and a carboxyl group.
Blood Calcium
The concentration of calcium ions in the blood, crucial for bone health, nerve function, muscle contraction, and blood clotting.
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