Explanation

If the direction of the magnetic field is reversed, the direction of the force exerted on a charged particle or a current-carrying wire will also be reversed.

This is because the force due to a magnetic field depends on the direction of the field.

The direction of the current or velocity, and the charge of the particle (if applicable).

Explanation

Metals are good conductors of electricity because they have free electrons, also known as conduction electrons or mobile electrons.

These electrons are not tightly bound to a specific atom and are free to move throughout the metal, carrying electrical current.

Explanation

The correct answer is: Light waves, Radio waves, Microwaves

This group consists only of electromagnetic waves, which are waves that propagate through the electromagnetic field.

They do not require a physical medium to propagate.

Explanation

Harvesting is the most important step in the preparation of sugar from sugarcane or sugar beets.

Sugarcane is typically harvested by hand or by machine, and sugar beets are harvested by machine.

The quality of the harvest affects the quality of the sugar produced.

Explanation

Accuracy refers to how close a measured value is to the true or accepted value.

It indicates the degree of agreement between the measured value and the true value.

Explanation

A reversible reaction is a reaction that can proceed in both the forward and reverse directions, and never goes to completion.

It is represented by a double arrow (⇌) between the reactants and products.

For example: A + B ⇌ C + D

Key Point:

• Single arrow (→): Represents an irreversible reaction, where the reaction only proceeds in one direction.

Explanation

When a body is tilted slightly, if its center of gravity remains above the point of contact, it will tend to return to its original position, restoring equilibrium.

This is a characteristic of stable equilibrium.

Key Points:

• A body is in unstable equilibrium after slight tilt if its center of gravity remains above the point of contact.
• A body is in neutral equilibrium when its center of gravity remains at same height.

Explanation

• Pepsin is a proteolytic enzyme produced by the chief cells in the stomach lining.
• It breaks down proteins into smaller peptides and amino acids, initiating protein digestion in the acidic environment of the stomach.

Explanation

• Glycolysis, the splitting of glucose, releases a small amount of energy that is enough to generate 2 ATP (adenosine triphosphate) molecules.
• This process occurs in the cytosol of cells and is the first step in cellular respiration.

Explanation

• The induced fit model proposes that the active site of an enzyme is flexible and changes shape until the substrate binds, much like a glove molding to fit a hand.
• This model suggests that the enzyme adapts to the substrate, rather than the substrate simply fitting into a pre-existing lock.