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aliina [53]
3 years ago
7

Describe the structure and functions of various organelles in a mature animal cell​

Biology
1 answer:
Aleksandr [31]3 years ago
7 0

Answer:

Explanation:

Cell Membrane

A thin semipermeable membrane layer of protein and fats surrounding the cell. Its primary role is to protect the cell from its surrounding. Also, it controls the entry and exit of nutrients and other microscopic entities into the cell.

Nuclear Membrane

It is a double-membrane structure that surrounds the nucleus. It is also referred to as the nuclear envelope.

Nucleus

It is an organelle that contains several other sub-organelles such as nucleolus, nucleosomes and chromatins. It also contains DNA and other genetic materials.

Centrosome

It is a small organelle found near to the nucleus which has a thick centre with radiating tubules. The centrosomes are where microtubules are produced.

Lysosome (Cell Vesicles)

They are round organelles surrounded by a membrane and comprising digestive enzymes which help in digestion, excretion and in the cell renewal process.

Cytoplasm

A jelly-like material which contains all the cell organelles, enclosed within the cell membrane. The substance found within the cell nucleus, contained by the nuclear membrane is called the nucleoplasm.

Golgi Apparatus

A flat, smooth layered, sac-like organelle which is located near the nucleus and involved in manufacturing, storing, packing and transporting the particles throughout the cell.

hope this helps :)

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the angle of the Sun’s rays

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Contact lens solution is described as a sterile, buffered, isotonic aqueous solution. Explain the importance of the adjectives b
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A contact lens is a lens placed on the cornea of the eye.


Importance of buffers in contact lens products:

Buffers: They aim to keep the pH of the solutions at values ​​between 6.6 and 7.8 in order to maintain the lens parameters and the effectiveness of the solutions. They are made by the combination of an acid and its sodium salt (phosphate and acetate for example). Borate and citrate buffers are used.


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The solution composed by isotonic saline solution.

Isotonia is expressed by osmolarity or cryoscopic lowering

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• Increased tear secretion

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3 years ago
List at least three medical or health uses of plants that are unrelated to photosynthesis
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Dandelion

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Rosemary

This is one of the oldest plants in our diet. According to recent studies, rosemary can help slow the progression of Alzheimer’s decease. Also, its oils naturally fight bacteria and fungi in your body and home. Ofelia’s famous words in Hamlet “There’s rosemary, that’s for remembrance,” refer to the plant’s ability to strengthen memory by improving blood circulation in the brain.

Lavender

Since classical antiquity, people have used lavender for its anti-inflammatory and antiseptic properties. But its very fragrance can help with anxiety, migraine, insomnia and depression.

Aloe Vera

For years, people have used the secretions of this plant to treat burns, cuts or superficial infections. It’s great for digestion, also, if you take it with juice.

Thyme

The citric variation of this herb (Thymus citriodorus) is known for its positive effects on children’s digestion and its antibiotic and antifungal properties, particularly used for healing superficial wounds.

Celery

Better known for its sweet zest, celery is also a great diuretic. The seed extract of this vegetable reduces blood pressure in animals and yields sedative and anti-convulsive effects for humans. However, excessive consumption may cause photodermatitis.

Sunflowers

According to the Medical Horticultural Society of Massachusetts, “a tea made from the leaves of sunflowers is an astringent, a diuretic and an expectorant, and it also works to reduce fevers.” Consuming sunflowers helps alleviate cold symptoms, and its ability to remove toxic substances lead the Russian Government to use it for cleaning the floors at the Chernobyl Power Plant after the nuclear disaster.

Mint

Headaches, skin irritations, nausea, pain, diarrhea and bloating are some of the many symptoms that mint alleviates. It also helps with digestion and chest congestion. Some studies suggest that it has antibacterial and antiviral properties.

Nepeta cataria

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Basil

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