Questions

Cell membranes are made up of phospholipids which prevents them from dissolving in water.

When moon's orbit is closest to earth is called as Perigee.

The distance between the Moon and Earth varies throughout the month and the year since the moon's orbit around the earth is elliptical. The distance is about 382,900 kilometers from the Moon's center to the center of Earth.

Hence, the point on the Moon's orbit closest to Earth is called the perigee.

Anemometer is the instrument that is used for measuring the speed of wind or any gas currents.

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.

Hence, the given statement is true.