Explanation

In Australia, cyclones are called willy-willy.

In the US, it's a hurricane

in the Southern Pacific, a typhoon.

ND17-1-2023

Explanation

The retina of the eye is comparable to the film of a traditional camera.

Retina is a film of nerve fibers.

The image of the object is formed at the retina just like camera film is used to see the images. 

ND16-3-2023

Explanation

Light travels at about 300,000 kilometers per second in a vacuum with a refractive index of 1.0,

but slows down to 225,000 kilometers per second in water

and 200,000 kilometers per second in the glass.

ND16-3-2023

Explanation

• The speed of sound is slower in denser media.
• Solids are denser than gases. However, they are also very rigid, and hence sound travels faster in solids.
• Stress on the fact that the speed of sound always depends on a combination of these two properties of any medium.

Explanation

A normal blood pressure level of 120/80 mmHg.

High-normal: 130 to 139 mmHg

High: Greater than 140 mmHg

while

mmHg stands for " Millimeter of Mercury"

The instrument used to measure blood pressure is: Sphygmomanometer

ND17-1-2023

Explanation

Extinct:

(of a species, family, or another group of animals or plants) having no living members; no longer in existence

ND17-1-2023

Explanation

in the early 1950s, the first successful vaccine was created by US physician Jonas Salk.

Salk tested his experimental killed-virus vaccine on himself and his family in 1953

First used Salk vaccine in 1955 ( in activated)

while 

A live attenuated (weakened) oral polio vaccine developed by Dr. Albert Sabin and first used in 1961.

Israel launched a polio vaccine drive after 1988 in April 2022

ND10-3-2023

Explanation

The muscles, tissues, and blood all are made up of Proteins

Muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts.

The tissue is highly cellular and is well supplied with blood vessels.

The cells are long and slender so they are sometimes called muscle fibers,

and these are usually arranged in bundles or layers that are surrounded by connective tissue.

Actin and myosin are contractile proteins in muscle tissue.

Muscle tissue can be categorized into:

skeletal muscle tissue,

smooth muscle tissue,

and cardiac muscle tissue.

ND5.3.2023

Explanation

Graphite is used for making the electrode in a dry cell.

Graphite is a good conductor of electricity, in fact, as good as metals

Graphite is used as an electrode because it conducts electricity without taking part in the chemical reaction

ND5.3.2023

Explanation

All important questions and Information Related to 'Photosynthesis"

Photosynthesis takes place in presence of the following light Only in sunlight from the sun

Photosynthesis takes place faster in white light

Photosynthesis occurs more in blue and red light rays

Photosynthesis occurs more in blue and red light rays and less, or not at all, in green light rays.

Green Light light is more important for photosynthesis.

As compared to photosynthesis, glucose is chiefly decomposed during Respiration

At the time of a Solar Eclipse, the rate of photosynthesis will: Decrease

In all plants, the major sites of photosynthesis are Leaves

In Photosynthesis reduction occurs in the Water

At night, when photosynthesis is stopped, plants Give off Carbon Dioxide.

Photosynthesis pigments are organized into clusters called thylakoid

The process of photosynthesis produces glucose and carbon dioxide

ND2-03-2023

ND2-03-2023