Test: Mind Map: Flamingo Poetry - Class 12 MCQ

Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
This process occurs in the chloroplasts and requires sunlight, carbon dioxide, and water, producing oxygen as a byproduct.
It is fundamental for the survival of plants and provides energy for the entire ecosystem.

The rusting of iron is a chemical reaction where iron reacts with oxygen and moisture to form iron oxide.
This process changes the chemical composition of iron, which is different from its original form, unlike physical changes such as boiling or melting.

The chemical formula for glucose is C₆H₁₂O₆, indicating it contains six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.
This simple sugar is crucial for energy production in living organisms.

The law of conservation of mass states that in a closed system, the total mass of reactants must equal the total mass of products.
This principle is fundamental in chemistry, ensuring that matter is neither created nor destroyed during chemical reactions.

A covalent bond is formed when two atoms share electrons, allowing them to attain stability.
This type of bond is common in organic compounds and is essential for the formation of molecules like water and carbon dioxide.

Carbon dioxide (CO₂) is the gas primarily responsible for the greenhouse effect, trapping heat in the Earth's atmosphere.
Increased levels of CO₂ from human activities are a significant contributor to global warming.

The pH scale measures the acidity or alkalinity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.
Understanding pH is crucial in various fields, including chemistry, biology, and environmental science.

Evaporation is the process where liquid turns into vapor, typically occurring at the surface of the liquid as it absorbs heat.
This process is vital for the water cycle and affects weather patterns.

Helium is a noble gas, known for its lack of chemical reactivity due to having a complete valence electron shell.
Other noble gases include neon, argon, and xenon, which are used in various applications, including lighting and welding.

Enzymes act as catalysts in biological reactions, increasing the reaction rate without being consumed in the process.
They are crucial for metabolic processes, helping to break down substances and synthesize new compounds in living organisms.

The cell membrane regulates the movement of substances in and out of the cell, maintaining homeostasis.
It is selectively permeable, allowing certain molecules to pass while blocking others, which is essential for cellular function.

Mitochondria are known as the powerhouse of the cell because they generate adenosine triphosphate (ATP), the energy currency of the cell.
They play a crucial role in cellular respiration, converting nutrients into usable energy.

Chemical energy is a form of potential energy stored in the bonds of chemical compounds.
This energy is released during chemical reactions, playing a vital role in energy transfer within biological systems.

The main component of the plasma membrane is phospholipids, which form a bilayer structure.
This arrangement allows the membrane to be fluid and flexible, essential for the function and integrity of the cell.

Osmosis is the process by which water moves across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
This process is crucial for maintaining cellular hydration and osmotic balance.

Saturated fats are solid at room temperature and contain no double bonds in their fatty acid chains, which allows them to pack closely together.
They are typically found in animal products and can contribute to health issues when consumed in excess.

The primary function of red blood cells is to transport oxygen from the lungs to tissues and return carbon dioxide from the tissues to the lungs.
This is vital for cellular respiration and maintaining overall body function.