What unit of light stimulates photoreceptor cells in the retina?

Biology

1 answer:

wel3 years ago

8 0

Answer:

Photons

Explanation:

The retina is a thin layer (membrane) in the eye that receives light through photoreceptor cells that convert this light into chemical and nervous signals transported to the brain's visual center.

The photoreceptors in the retina are known as rods and cones. Rods detect motion and sare responsible for black and white vision, they are present in the macula. Cones on the other and, are responsible for central and color vision. These photoreceptors absorb photons that trigger the membrane's potential of the cells.

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It is common for a normal, healthy individual to carry potentially pathogenic organisms in their upper respiratory tract.

ohaa [14]

Yes. It is common for a normal, healthy individual to carry potentially pathogenic organisms in their upper respiratory tract.

The human upper respiratory tract serves as a reservoir for a diverse community of commensals and potential pathogens, such as Haemophilus influenzae, Moraxella catarrhalis,etc. which can occasionally develop into pathogens and cause infectious diseases. Viruses are responsible for the majority of upper respiratory tract infections.

Nasal hairs are used to catch debris. Particles are propelled upward and out of the respiratory tract by cilia on the epithelium of the trachea and bronchi. The respiratory system has a feature that guards against infections.

Therefore, It is common for a normal, healthy individual to carry potentially pathogenic organisms in their upper respiratory tract.

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7 0

2 years ago

PLEASE HELP ME ITS MY FINALE !!!

shutvik [7]

Answer:The answer is the person and the tennis ball :)

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3 years ago

In order for a polar compound to enter into the hydrophobic space of the phospholipid tails, it would need to break the many ___

Georgia [21]

Answer:

In order for a polar compound to enter into the hydrophobic space of the phospholipid tails, it would need to break the many polar covalent bonds bonds it has formed with the water and enter into a space where these bonds cannot form. Therefore, it is not a repelling action but a "lack of attraction".

Explanation:

Water as polar solvent and the phospholipids:

Water is very different on the molecular and that is due to the more polar nature, which is caused by the hydrogen bonding with in a H₂0 molecule. As the water molecules forms bonds with the other molecules in a specific formation of unequal polarities on its molecules. As the molecules have an unequal amount of charges present on it. For, the phospholipids they have two hydrophobic tails and the hydrophilic head. Through which they form most of the cell membrane structures.

In order to add any polar molecule to the hydrophilic head of the phospholipid there are many covalent bonds which are required to be broken, as these bonds include the covalent bonds found inside the molecular level. While, the hydrophobic tails of the molecules can't arrange themselves to form the bonds with the polar molecules more frequently.