Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

• Ethnology (Branch of Anthropology) is the study of people, cultures, customs, and traditions.
• It compares different societies to understand human behavior and cultural development.

Additional information:

• Sociology – Study of society and social relationships
• Psychology – Study of human mind and behavior

Last verified on 16-03-2026

Explanation

• Greenhouse walls are traditionally and usually made of glass.
• Glass: Traditional, durable, and provides maximum sunlight.

Explanation

• An anion is a negative charge (or negatively charged ion).
• The 'n' in anion stands for negative
• Formed when non-metal gains electrons.
• They gain one or more than one electron.
• Formation: Gained electrons.
• Attracted to the anode (positively charged electrode).
• Generally larger than their parent atoms. 

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Cations are ions that are positively charged

Last updated 15-03-2026

Explanation

• Mitochondria are cell organelles responsible for producing energy in the form of ATP (Adenosine Triphosphate) through cellular respiration. 
• They are called the “Powerhouse of the cell” because they provide the energy required for all cellular activities.
• Mitochondria have their own DNA and ribosomes, allowing them to replicate independently.

Last verified on 14-03-2026