Explanation

• The retina is the innermost layer of the eye that senses light and sends visual signals to the brain.
• It's is also known as "screen of the eye".
• Because it is where the light rays are finally focused and interpreted as visual information.

Explanation

• Waste from the plastic industry is an example of non-biodegradable waste.
• As plastics are synthetic materials that are resistant to decomposition.
• It can take hundreds or thousands of years to break down.

Explanation

• The requirement for light during seed germination varies among plant species.
• Some seeds, like peas and beans, can germinate in darkness (skototropism).
• While others, like lettuce and petunia, require light (photoblastism) to break seed dormancy and initiate germination.
• This is because light can trigger the production of hormones and enzymes essential for germination.

Explanation

• Camels have a special water storage space in their humps, which store fatty tissue.
• When food and water are scarce, the camel's body metabolizes the fatty tissue in the hump, providing energy and water.
• This allows camels to survive for extended periods without water.

Explanation

A 64-year-old male presents with dry eyes.

The Pterygopalatine ganglion is most likely to be affected.

This ganglion is involved:

• In the innervation of the lacrimal glands
• damage or dysfunction can lead to decreased tear production
• resulting in dry eyes

Explanation

The best period of gestation to carry out chorionic villus sampling (CVS) for prenatal diagnosis is typically between 10-12 weeks

During this period, there is sufficient chorionic villi development for sampling,

The procedure is considered safe and effective for obtaining genetic material for prenatal diagnosis.

Explanation

• The Midbrain is the smallest part of the brain, connecting the forebrain to the hindbrain.
• It plays a crucial role in auditory and visual processing, as well as body movement and coordination.

Explanation

Magnesium ions (Mg²⁺) are essential for the association of the small and large subunits of ribosomes.

Without adequate Mg²⁺ concentration, the ribosomal subunits remain dissociated, hindering protein synthesis.

Explanation

The liver plays a crucial role in regulating blood glucose levels by storing glucose as glycogen.

When levels are high and releasing glucose into the bloodstream when levels are low.

It helps maintain stable blood glucose levels, especially between meals and during fasting.

Explanation

The sarcoplasm surrounds the muscle fiber of the skeletal muscle.

It is the cytoplasm of muscle cells.