Explanation

• Veal is the meat from young calves.
• It can come from calves of either sex and any breed.

Last verified on 03-07-2026

Explanation

• O₃ is the chemical formula of ozone gas.
• Ozone is an allotrope of oxygen containing three oxygen atoms.
• It is mainly found in the stratosphere, where it forms the ozone layer.
• The ozone layer protects Earth from harmful ultraviolet (UV) radiation.

Last verified on 30-06-2026

Explanation

• Carbon dioxide (CO₂) and oxygen (O₂) move in plants through stomata.
• Stomata are tiny pores present on leaves.
• These gases move by diffusion, not active transport.
• They are essential for photosynthesis and respiration.

Last verified on 25-06-2026

Explanation

• The Sun is the ultimate and main source of energy on Earth.
• It provides energy through solar radiation (light and heat).
• All forms of energy on Earth directly or indirectly come from the Sun.
• It supports life, climate, and ecosystems on Earth.

This energy is then converted into various forms, such as:

• Thermal energy (heat)
• Kinetic energy (wind, water currents)
• Electrical energy (generated from solar panels)
• Chemical energy (fossil fuels, biomass)
• Biological energy (food chains, ecosystems)

Last verified on 16-06-2026

Explanation

• Ocean water is not drinkable due to a high amount of sodium chloride (common salt).
• This salt makes water too salty for human consumption.
• Seawater also contains small amounts of other dissolved minerals.
• High salt concentration causes dehydration in the human body.

Last verified on 25-06-2026

Explanation

• GMO stands for Genetically Modified Organism.
• It refers to an organism whose genetic material (DNA) has been changed using genetic engineering techniques.
• GMOs are developed to improve traits such as disease resistance, increased production, or better quality.

Last verified on 16-06-2026

Explanation

• Omnivores are NOT an abiotic factor; they are a biotic (living) factor.
• Abiotic factors are non-living components of the environment such as soil, temperature, and sunlight.
• Omnivores are organisms that eat both plants and animals.
• Environmental factors are divided into biotic and abiotic components.

Last verified on 25-06-2026

Explanation

• Phospholipids are not a component of a DNA nucleotide.

Additional information:

A DNA nucleotide consists of three parts:

1. Nitrogenous base → Adenine (A), Thymine (T), Guanine (G), Cytosine (C)
2. Deoxyribose sugar → 5-carbon sugar in DNA
3. Phosphate group (Phosphoric acid) → Forms the backbone of DNA

Last verified on 25-06-2026

Explanation

• Jaundice is a condition characterized by yellowing of the skin and eyes.
• It is caused by excess bilirubin due to liver dysfunction or disease.

Last verified on 01-04-2026

Explanation

• HLA stands for Human Leukocyte Antigen.
• It is a system of proteins found on the surface of cells.
• It plays an important role in the immune system and body’s defense mechanism.
• HLA helps the body distinguish between self and foreign substances.

Last verified on 23-06-2026