Explanation

Chemosynthetic bacteria obtain energy by oxidizing inorganic compounds like ammonia or hydrogen sulfide.

They use this energy to synthesize food, making them autotrophs without relying on sunlight.

Explanation

Lead (Pb) belongs to Group IVA (Group 14) of the periodic table, along with carbon, silicon, and tin.

Elements in this group have 4 valence electrons and show a mix of metallic and non-metallic properties.

Explanation

Conveying means علم کی منتقلی یا بات چیت کرنا

Passing on means دوسروں کو معلومات کا اشتراک یا منتقل کرنا

Explanation

The common saying is: "Excess of everything is bad," meaning too much of anything can be harmful.

It emphasizes the value of balance and moderation in life.

Explanation

The correct phrase is "count on", which means to rely or depend on someone.

The sentence should be: "You may count on my help in this matter."

Explanation

A thallus is a plant body not differentiated into true roots, stems, and leaves.

It is commonly found in algae, fungi, and some bryophytes.

Explanation

The correct phrase is "deaf to", meaning to ignore or not listen to something.

So the sentence becomes: "He remained deaf to his father's advice."

Explanation

In a metallic conductor, current flows due to the movement of free electrons in the conduction band.

These electrons drift under the influence of an electric field, creating electric current.

Explanation

The cisternae are flattened, spherical or tubular membrane-bound sacs found in the endoplasmic reticulum.

They help in transport and modification of proteins and lipids within the cell.

Explanation

Oxidative phosphorylation is the process of ATP synthesis using energy from electrons transferred through the electron transport chain in the presence of oxygen.

It occurs in the mitochondria.

It is the main source of ATP in aerobic respiration.