Explanation

• If ribosomes do not function properly, protein synthesis will stop.
• Ribosomes are the site of protein synthesis in all living cells.
• Proteins are essential for growth, repair, and cell functions.
• Without proteins, the cell cannot function or survive properly.
• Ribosomes are found in both prokaryotic and eukaryotic cells.

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Explanation

• The cell wall of algae is chiefly composed of cellulose.
• Cellulose provides strength and support to algal cells.
• Different groups of algae may also contain pectin, alginates, agar, or silica.

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Explanation

• CT Scan provides cross-sectional (slice) images of both bones and soft tissues using multiple X-ray images.
• It is commonly used in complex trauma, internal bleeding, fractures, and organ injuries.
• CT stands for Computed Tomography.
• Inventor: Sir Godfrey Hounsfield (1972)

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Explanation

• X-ray is the first and most commonly used imaging test to identify a bone fracture.
• It is quick, widely available, and cost-effective.
• Most broken bones can be diagnosed with an X-ray.

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Explanation

• If the ozone layer disappears, harmful ultraviolet (UV) rays will reach the Earth's surface in much larger amounts.
• The ozone layer protects life by absorbing most of the Sun's harmful UV-B and UV-C radiation.
• Increased UV radiation can cause skin cancer, cataracts, and weakened immune systems.
• It can also damage crops, marine life, and ecosystems.
• The ozone layer is found mainly in the stratosphere.

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Explanation

• The primary purpose of microorganisms such as bacteria is to decompose dead organic matter and recycle nutrients.
• Bacteria break down dead plants, animals, and organic waste.
• This process returns nutrients to the soil, making them available for new life.
• Without decomposers, dead matter would accumulate, and nutrient cycling would stop.

Last verified on 11-07-2026

Explanation

• Fish survival decreases due to the decomposition of organic matter.
• When organic matter increases, bacteria decompose it and consume dissolved oxygen.
• Low oxygen levels make it difficult for fish to breathe.
• This can lead to fish stress or even fish kills.
• Excess organic matter also reduces overall water quality.

Last verified on 11-07-2026

Explanation

• Geobacillus stearothermophilus is the standard biological indicator used to test the effectiveness of an autoclave.
• Its heat-resistant spores are difficult to kill, making them ideal for sterilization testing.
• If the spores are destroyed, the autoclave is functioning properly.
• It is widely used in hospitals, laboratories, and pharmaceutical industries.

Last verified on 11-07-2026

Explanation

• The collective term for all the petals of a flower is called the Corolla.
• The corolla is usually brightly colored to attract pollinators such as insects and birds.
• It is the second whorl of a flower, located inside the calyx.
• Petals help in the process of pollination.

Additional information:

• Calyx → Collective term for sepals
• Androecium → Male reproductive part (Stamens)
• Gynoecium (Pistil) → Female reproductive part (Carpels)

Last verified on 10-07-2026

Explanation

• Pineapple is also known as "Ananas".
• Scientific Name: Ananas comosus
• Plant Family: Bromeliaceae
• Type: Tropical fruit

Last verified on 09-07-2026