Explanation

In a DNA molecule, adenine (A) always pairs with thymine (T) through two hydrogen bonds.

This specific pairing maintains the structure and stability of the DNA double helix.

Explanation

In mutualism, both organisms benefit: microorganisms help digest cellulose, and herbivores provide food and shelter.

This relationship is cooperative, where neither is harmed but both gain advantages.

Explanation

An Electrocardiogram (ECG) records the electrical activity of the heart.

It helps diagnose heart conditions like arrhythmias, heart attacks, and other cardiac issues.

Explanation

Transcription is the process where DNA is used to create mRNA.

Translation then follows, where mRNA is used to synthesize proteins in the cytoplasm.

Explanation

Explanation

Molluscs are soft-bodied animals that may or may not have a shell and can live in aquatic environments like ponds, lakes, rivers, and oceans.

Examples include snails, clams, and octopuses

Explanation

Amylase is the enzyme that breaks down starches into sugars, and it is secreted by the salivary glands during the process of digestion.

Explanation

Spirogyra is a filamentous green alga classified under the Kingdom Protista.

It lives mostly in freshwater.

It is known for its spiral chloroplasts.

Explanation

Guava is a flowering plant because it produces flowers that later develop into fruits.

Ferns, Thuja, and Sago palms are examples of non-flowering plants.

Explanation

Nuclear energy is produced by splitting atoms (fission) and relies on uranium, a finite resource, making it non-renewable.

Renewable sources like solar, geothermal, and biomass naturally replenish over time.