Explanation

A peanut is a legume that grows underground, hence it is considered a root.

Despite being called a "nut".

Explanation

Neurons are the main cells of nerve tissue responsible for transmitting nerve impulses.

Each neuron consists of dendrites (receive signals), a cell body, and an axon (sends signals).

Explanation

Ascorbic acid, also known as vitamin C, is a water-soluble vitamin that is essential for various bodily functions, such as:

• Collagen production
• Wound healing
• Iron absorption
• Antioxidant functions

Vitamin C is one of the most well-known vitamins and is found in many fruits, vegetables, and other foods.

Explanation

A neuron, also known as a nerve cell.

It is the basic building block of the nervous system.

It receives, processes, and transmits information through electrical and chemical signals.

It allowing for communication between different parts of the body.

Explanation

Blood pressure is the force exerted by blood against the walls of arteries.

It reflects how hard the heart is working to pump blood through the arterial system.

Explanation

The main constituent of hemoglobin is iron.

Hemoglobin transports oxygen and exhibits a quaternary protein structure.

Iron is crucial for hemoglobin formation; its deficiency can impact hemoglobin production.

Heme in hemoglobin is protoporphyrin IX.

Infants reach adult hemoglobin levels by the end of their first year.

Ferric ions are not part of hemoglobin.

Hemoglobin is found dissolved in plasma.

Explanation

 The additional, small, circular, extrachromosomal piece of DNA in a bacterial cell is called a plasmid.

Structure: Small, double-stranded, circular DNA molecules.

Location: Found in the cytoplasm of bacteria (extrachromosomal).

Function: They typically contain non-essential but advantageous genes, such as those for antibiotic resistance.

Last updated 17-02-2026

Explanation

During respiration, organisms break down glucose to release energy, and carbon dioxide is produced as a byproduct.

Unlike photosynthesis, where oxygen is produced, respiration involves the release of carbon dioxide.

Explanation

In meiosis, daughter cells have half the number of chromosomes compared to the parent cells.

This reduction is crucial for maintaining the stability of chromosome number across generations.

Explanation

Kidney stones commonly form due to excessive calcium salts in the urine, especially calcium oxalate.

High levels of calcium can crystallize and form stones, leading to kidney issues.