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Explanation

Mitochondria is known as powerhouse of cell because it serves as site for synthesis of Adenosine Triphosphate (ATP),

the energy currency of cell, through the process of aerobic cellular respiration.

ATP serves as energy currency for different cell activities.

A cell consists of three parts:

1. The cell membrane,

2. The nucleus, and,

3. Between the two, the cytoplasm.

Explanation

Vivid means روشن

Bright means روشن

Explanation

Bewildered means پریشان

Confused means پریشان

Explanation

She lived in Australia from 2018 until 2022.

وہ 2018 سے 2022 تک آسٹریلیا میں مقیم تھیں۔

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In:

This preposition is used to indicate location or place.

In this context, it signifies the place where "she" lived.

From:

preposition is used to indicate the starting point of a period.

Here, it shows when "she" began living in Australia.

Until:

This conjunction is used to indicate the end of a period.

In this case, it marks the end of "her" time living in Australia.

Explanation

If you work really hard, you will get good score in the upcoming examination.

Formula for Type One conditional sentences: if/when + present simple, will + infinitive.

Explanation

Hypothalamus is responsible for temperature regulation.

It helps maintain the body's internal temperature by triggering responses like sweating or shivering.

Explanation

Generally word trembling is followed by with.

With is a preposition here.

Trembling with cold means سردی سے کانپنا

Explanation

"They are planning to take their guests out to dinner tonight."

وہ آج رات اپنے مہمانوں کو باہر کھانے پر لے جانے کا منصوبہ بنا رہے ہیں۔

This phrase correctly indicates that they intend to accompany their guests to a dinner event.

Explanation

Examples of conjunctions:

And, or, so, since, for, because, as, but, yet, still, while

Conjunctions are parts of speech that connect words, phrases, clauses, or sentences. 

Explanation

They have all been friends since their first match as a team.

وہ سب ایک ٹیم کے طور پر اپنے پہلے میچ سے ہی دوست ہیں۔

"Since" is used to indicate the starting point of a continuous period of time.