Explanation

The gravitational field of Earth is a vector field that points towards the center of the Earth.

It representing the direction of the gravitational force that the Earth exerts on objects near its surface.

This means that the gravitational field is directed towards the Earth, pulling objects towards its center.

Explanation

The motion of a falling ball towards Earth is due to the gravitational force.

Gravitational force is the force that attracts the ball towards the Earth, causing it to accelerate downwards.

Explanation

• Ionic crystals are typically characterized by high melting points due to the strong electrostatic forces between the positively and negatively charged ions.
• The attractive forces between oppositely charged ions are strong, requiring a significant amount of energy to overcome, resulting in high melting points.

Explanation

Kwashiorkor is a condition caused by a deficiency of dietary protein, leading to an imbalance in the gastro-intestinal system. It is characterized by:

• Edema (swelling) in the legs, feet, and face
• Diarrhea
• Weight loss
• Hair loss
• Skin lesions
• Impaired immune function

Explanation

• The dark reaction, also known as the Calvin cycle.
• It is a light-independent reaction that occurs in the stroma of the chloroplast.
• This process uses the energy from ATP and NADPH produced in the light-dependent reactions to convert carbon dioxide into glucose.

Explanation

• The electron transport chain (ETC) is the stage of aerobic respiration that takes place at the cristae of mitochondria.
• The cristae are specialized infoldings of the mitochondrial inner membrane, where the ETC complexes are embedded.

Explanation

• The rate of a chemical reaction typically increases when the temperature increases.
• As higher temperatures provide more energy for the reactant molecules to collide and react.

Explanation

• Fungi have cell walls made of chitin and are all heterotrophic, obtaining nutrients by decomposing organic matter or forming symbiotic relationships.
• This distinguishes them from other kingdoms, making Fungi unique in their combination of cell walls and heterotrophy.

Explanation

In the taxonomic hierarchy, Class is the most inclusive and encompasses all the other terms:

• Class includes multiple Orders
• Order includes multiple Families
• Family includes multiple Genera (plural of Genus)
• Genus includes multiple Species

Explanation

• The correct way of writing a scientific name of an organism is in italics, with the genus capitalized and the species in lowercase.
• Therefore, the correct example among the options should be: Houbara bustard.