Explanation

• Noble gases are stable because their outermost energy level is full, meaning they have eight electrons in their valence shell.
• This full outer energy level gives them a stable electronic configuration, similar to that of the noble gases, and makes them unreactive.

Explanation

• The number of protons and neutrons in an atom are added together to obtain the total number of nucleons.
• It is also known as the mass number.

Explanation

• The loss of electrons and protons (H+ ions) is called oxidation.
• Oxidation is a chemical reaction that involves the loss of electrons or the addition of oxygen.
• Resulting in a change in the oxidation state of an atom, molecule, or ion.

Explanation

• Inhibitors are molecules that bind to enzymes and decrease their activity, thereby slowing down or preventing the biochemical reaction.
• Enzyme activity is not enhanced by inhibitors, but rather inhibited.

Explanation

• The correct answer is: Cell does not contain the hereditary material.

The cell theory postulates:

• All living organisms are made up of one or more cells.
• The cell is the fundamental unit of life.
• New cells are derived from pre-existing cells (biogenesis).

Explanation

The heartbeat refers to the rhythmic pulsation of the heart that pumps blood throughout the body.

It is a vital function that maintains blood circulation, supplying oxygen and nutrients to tissues and organs.

Explanation

Plasmolysis is the process by which a plant cell loses water and its cytoplasm shrinks, causing the cell membrane to pull away from the cell wall.

This can occur due to osmotic stress, such as when a plant is exposed to high concentrations of salt or sugar.

Explanation

The foundation of life is based on chemical processes and reactions that occur within living organisms.

These chemical reactions involve the building blocks of life.

Such as carbon, hydrogen, oxygen, nitrogen, and phosphorus.

They are combined in various ways to form biomolecules like carbohydrates, proteins, and nucleic acids.

Explanation

Specific heat capacity is the thermal energy transfer required per unit mass to increase the temperature of a substance by 1°C (or 1 K).

It is a measure of how much heat energy a substance can absorb or release per unit mass per unit temperature change.

Explanation

The renewable energy sources are:

• Water energy
• Wind energy
• Tidal energy
• Solar energy
• Hydroelectric
• Ocean energy
• Geothermal energy
• Biomass
• Biogas

The non-renewable energy sources are:

• Fossil fuels or Hydrocarbon fuel (Oil, Natural gas, Coal)
• Nuclear energy