Questions

The sun moves around and in the house, but cannot touch the house.

Ans. B.
Option B- ‘stations of numerical small nations’ is incorrect.
The other statements make complete sense, hence are correct.

Atoms of the same element can have same atomic number and number of electrons since, the atomic number is the number of protons and the number of protons and eectrons are the same in an element.

Hence, the atoms of the same element may differ in their atomic mass since it depends on the number of neutrons it holds and such atoms are called isotopes.

Deadlock is a situation where a group of processes are all blocked and none of them can become unblocked until one of the other becomes unblocked. The simplest deadlock is two processes each of which is waiting for a message from the other.

Glycolysis involves the breaking down of a sugar into more manageable compounds in order to produce energy.

The net end products of glycolysis are two Pyruvate, two NADH, and two ATP.

The watt-hour (WH) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time.

1 WH = 3600 joules.

Mitochondria which is present in both plant and animal cells supplies energy to the cells and hence called as the powerhouse of the cell.