When parallel light rays hit a concave mirror they reflect inwards towards a focal point (F).

• Red light rays have the lowest frequency and highest wavelength value.
• Blue or violet light has the shortest wavelength.

The speed of light inside the air bubble is faster than in the water. The reason why the air bubble appears to be like a mirror is that the light gets reflected around the outside of the bubble

Sunlight is composed of the following seven colours:

1.       Violet

2.       Indigo

3.       Blue

4.       Green

5.       Yellow

6.       Orange

7.       Red

Retinene is better known as retinaldehyde or simply retinal and is fundamental in the transduction of light into visual signals in the photoreceptor level of the retina (known as the visual cycle).

Retinene is more formally known as dehydroretinaldehyde.

Joseph Priestly discovered oxygen on August 1, 1774.

The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass

Joseph Priestly discovered oxygen on August 1, 1774.

The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass

Joseph Priestly discovered oxygen on August 1, 1774.

The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass

Bacterial membranes present a large diversity of amphiphilic lipids.

Since viruses are obligate intraellular parasites, the term conveys the idea that viruses must carry out their reproduction by parasitizing a host cell