Explanation

This statement is NOT true.

Plasmids replicate independently and are not necessary for the replication of the bacterial chromosome.

Explanation

The breakdown of glucose by microorganisms, such as yeast, is called alcoholic fermentation.

Explanation

Steroids are lipids that do not contain fatty acids.

They have a structure composed of four fused carbon rings (steroid nucleus) and are involved in various biological functions, such as hormones (e.g., cholesterol, testosterone, and estrogen).

Other lipids like neutral lipids, phosphatidic acids, and waxes do contain fatty acids in their structures.

Explanation

Gerontology focuses on the study of aging and older adults.

It examines the biological, psychological, and social aspects of aging and the challenges faced by older individuals.

Explanation

Destructive waves, known as tsunamis

Caused by underwater earthquakes.

When an earthquake occurs beneath the ocean floor,

it can displace a large volume of water

Generating powerful waves that can travel across the ocean

And cause devastation when they reach coastal areas

Explanation

SF₆ is stable although the central S atom expands its octet and has 12 electrons in the outermost shell.

This is because the central S atom forms 6 S-F bonds with 6 F atoms, and S-F bond is a very strong covalent bond.

The molecule is stabilized by the 6 strong S-F bonds.

Explanation

Newton's third law, which is acting on the ball when we throw it straight upward

Newton's third law that in every action there is an equal and opposite reaction.

And we also know that gravity pulls everything toward itself.

Explanation

Brassicaceae species are characterized by four-petalled cross-shaped flowers

*

The flowers have four free sepals,

four free alternating petals,

two shorter free stamens

and four longer free stamens.

***

ND2-2-2023

Explanation

Facultative organisms can live on organic residues as saprophytes;

but they can also infect living plants as parasites when conditions are favorable.

Those organisms that live primarily as saprophytes are called facultative parasites.

Those organisms that live primarily as parasites are called facultative saprophytes.

Explanation

In heavier nuclei, the number of neutrons typically exceeds the number of protons to help stabilize the nucleus.

This is due to the need for additional strong nuclear force to counteract the electrostatic repulsion between positively charged protons.