Explanation

Active transport moves molecules against the concentration gradient, which requires energy (ATP).

Passive transport and facilitated (not vacillated) transport do not require energy.

Explanation

mRNA makes up only about 1–2% of the total DNA or genetic material content in a typical cell.

Most of the DNA is non-coding or used for other RNAs like tRNA and rRNA.

Explanation

The cell membrane is composed of roughly 40–50% lipids, primarily phospholipids and cholesterol.

These lipids form the bilayer structure, essential for membrane fluidity and barrier function.

Explanation

Oxygen cannot be detected directly in an organic compound using common detection methods, unlike chlorine, nitrogen, and phosphorus.

Explanation

• Marine water is water that contains a high amount of salt, typically above 30% salinity.
• This includes oceans, seas, and other saltwater bodies.

Explanation

• Biotic components refer to the living things in an environment.
• Including plants, animals, microorganisms, and fungi.

Explanation

Explanation

The International Potato Center (CIP) in Lima, Peru, is the global gene bank for potatoes.

It preserving over 4,500 varieties of potato and sweet potato from around the world.

Explanation

• The trachea (windpipe) is a hollow tube in the chest.
• It connects the throat (pharynx) to the lungs, allowing air to pass through during breathing.

Explanation

 Bronchial Asthma is a reversible inflammatory condition of the airways

Inflammation:

The primary characteristic of asthma is chronic inflammation within the airways, involving the lining of the bronchial tubes. 

Reversibility:

This inflammation and resulting airway obstruction can be reversed with medication, allowing airflow to improve. 

Triggers:

Asthma symptoms can be triggered by various factors like allergens, exercise, cold air, or viral infections. 

Symptoms:

Common symptoms include wheezing, coughing, chest tightness, and shortness of breath.