The Fundamental Unit of Life — Science STD 9 — Question

Name the organelle: Storage sacs of the cell______ (Vacuole, Lysosome, Ribosome)

A mole represents an ____________ number of particles of a substance. (Avogadro, Atomic, Molecular)

Sound is caused by __________. (Vibrations, Air, Pressure)

A mole represents an ____________ number of particles of a substance.

As the temperature rises, particles move ________. (Faster, Slower, Randomly)

_________ is a measure of the inertia of a body.

Cardiac muscles seldom get fatigued because _________. (of continuous contraction, of extreme endurance, they lack mitochondria)

The subatomic particle not present in a hydrogen atom is _________. (Neutron, Proton, Electron)

If the nucleus of an atom has atomic number 17, mass number 37, and 17 electrons outside the nucleus, the number of neutrons in it is ____________. (20, 17, 37)

In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the __________ by the body. (Distance travelled, Speed, Velocity)