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Definition

All sexually reproducing organisms make sex cells called gametes. The gamete, produced by the female is called the egg or ovum (plural = ova). It joins with the sperm, the male gamete, during fertilization to form the embryo, which will eventually grow into a new organism.

Ova are produced by sexually reproducing animals, protists, fungi and flowering plants and ferns. In animals, they are produced by follicle cells in the ovaries of the female. In plants, egg cells are produced by ovules found inside the ovary (the part which then becomes the fruit).

Function

Gametes are the only type of cells that are haploid. They contain only one set of chromosomes, which is half of the genetic material required to make an organism they are found in. In humans, this means gametes have 23 chromosomes. The function of the ovum is to carry the set of chromosomes contributed by the female and create the right environment to enable fertilization by the sperm. Ova also provide nutrients for the growing embryo until it sinks into the uterus and the placenta takes over.

Structure

Despite its large size - it's the only animal cell you can see with the naked eye and is as big as the period at the end of this sentence - most of the egg cell is padding, layers of which protect the valuable information in its nucleus.

Most of the inner structures of the egg cell are the same as those in any other animal cell, but they are given special names. For example, the nucleus is referred to as the ' germinal vesicle' and the nucleolus as the ' germinal spot.'

The cytoplasm of the ovum is called the ' ooplasm' (meaning 'egg material') or ' vitellus.' As if two names were not enough, it is also known as the ' yolk' of the egg. This can be a bit confusing when you think of one of the most common, visible and edible ovum around the chicken egg, in which the yolk looks like the nucleus of the cell but actually contains most of the egg cell. The yolk supplies nutrients to the growing embryo, a smaller amount in mammals compared to that of egg-laying animals.

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function & structure - video & lesson transcript | study.com

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Ovum: Definition, Function & Structure - Video & Lesson Transcript | Study.com

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All sexually reproducing organisms make sex cells called gametes. The gamete, produced by the female is called the egg or ovum (plural = ova). It joins with the sperm, the male gamete, during fertilization to form the embryo, which will eventually grow into a new organism.

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A white blood cell doesn't have a complete shape 

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A white blood cell doesn't have a complete shape 

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They are called erythrocytes

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The muscles cell helps us to carry or to play any s

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The muscles cell helps us to carry or to play any s

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Ovum is the largest cell in human body . It is found in the ovaries of the female reproductive system. And it can been seen with a naked eye. So you don't need microscope or magnifying glass to see it clearly.

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Epithelial cells are the safety shields of the body. 

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Epithelial cells are the safety shields of the body. 

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Although your your white blood cells account for only 1% of your your blood, their impact is significant. 

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Although your your white blood cells account for only 1% of your your blood, their impact is significant. 

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Ovum can be in the female body where the females produces embryo.

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watch from 3:56 to 5:39

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Different types of blood cells

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How does the red blood cell's structure help it to do it's job?

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How does the red blood cell's structure help it to do it's job?

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It's  biconcave shape maximizes the surface area to absorb more oxygen. It's shape also allows it to squeeze through small areas in the body. Red blood cells do not have a nucleus, which also increases the oxygen capacity.

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How does the Epithelial Cell look like? 

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How does the Epithelial Cell look like? 

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https://tse3.mm.bing.net/th?id=OIP.Gbh3LIK-fglmNaBnEHMQfQHaI9&pid=15.1

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Muscles help us to do work

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It can give life to an embryo, after fertilization ( an act, process, or instance of fertilizing.), from the male.

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Nerve Cells are found in the brain and spinal cord and all the the parts of the body.ome from the brain and pass through the body, for your information like I said there are around 86 billion (86000000000)Nerve Cells (Neurons) in our brain.

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Red blood cells are part of the circulatory system.

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Epithelial cells are specialized for absorption, secretion or to act as a barrier

A covering or lining for body surfaces, e.g. skin, gut and ducts

The functional units of secretory glands, such as salivary tissue and liver.

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The B cell is specifically designed to have a bacterial DNA hook letting only one type of antibody type produce because other types wont work due to the bacterial DNA difference.

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The B cell is specifically designed to have a bacterial DNA hook letting only one type of antibody type produce because other types wont work due to the bacterial DNA difference.

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The Parenchymatous cell is found in non woody plants.

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Smooth muscle cells are usually are found in the digestive system, your respiratory system, blood vessels, urinary system and reproductive system.

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They are found in a plant cell just behind the root tip where they continually being formed. They are found inside the root hair cell

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They are made in the bone marrow in your bones and can be found all over your body.

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When you taste a favorite food or smell a flower, they send a signal to your brain so you can enjoy the flavor and smell.

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The B cell of the immune system is found in the center of the lymph node which is a small section of your brain

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The B cell of the immune system is found in the center of the lymph node which is a small section of your brain

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what does the parenchymatous cells look like?

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what does the parenchymatous cells look like?

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the parenchymatous cells has a large vacuole.

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the ovum cell is the the egg cell of a woman 

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the ovum cell is the the egg cell of a woman 

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Its also called ery

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It helps to transport oxygen around the body, and remove carbon dioxide by transporting it to your lungs for you to breathe out.

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The Nerve Cell or neuron carry electrical impulses in the body. It is the cell that makes us feel, taste, think, reactions, movement and have feelings. Without the nerve cell there is no real me or a real youThey are electrical impulses send from our brain through or body.  There are about 86 billion neurons (Nerve Cells) in the human brain.

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The base tissue of plants made of thin walled that are able to divide

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The base tissue of plants made of thin walled that are able to divide

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2. The absorbed water is transported through the roots to the rest of the plant :            It supports leaves and shoots by keeping the cells bumpy. It cools the leaves by evaporation. It transports dissolved minerals around the plant.

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2. The absorbed water is transported through the roots to the rest of the plant :            It supports leaves and shoots by keeping the cells bumpy. It cools the leaves by evaporation. It transports dissolved minerals around the plant.

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https://www.youtube.com/watch?v=nz3ClBQojU8

4. the cell is structured by having a large surface to observes the water that the plant needs.

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1. Structure of a root hair cell

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This is part 2
https://www.youtube.com/watch?v=I80Xx7pA9hQ

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This is a diagramm of a sperm cell is.

You can find the sperm cell in the male reproductive system.

Infront of the nucleus of the sperm cell is an Acrosome. This helps with the fertilization of the Ovum.
Inside the middle piece there is a collection of mitochondria. At the furthest part of the sperm cell you can find the tail, which acts like a motor for the cell to reach the Ovum

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FUNCTION OF THE SPERMS

Sperm cell has a nucleus that fertilizes the egg cell.

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Nerve cell, Sperm cell, ovum , Red blood cell, White blood cell, epithelial cell, parenchymatous cell, muscle cell and root hair cell.

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Video on specialized cells

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Specialized Cells: Significance and Examples

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Watch the following videos to get started....

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Watch the following videos to get started....

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Activity – make a 2-minute presentation with the team (on any one type of the cell by answering the following questions).
Paste the answers to the wall
1. Structure of the cell (Figure) How does it look like?
2. What does it do?
3. Where can you find it?
4. How does it's structure facilitate (help) it to do its job?

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Different Cells for Different Jobs (Grade 7)

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Cells in animal and plant have a designed structure and function.

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The epithelial cells are found on your skin, blood vessels, urinary tract and organs.
A large amount of epithelial cells in your urine might indicate an infection. Kidney diseases or others.
Work from https://medlineplus.gov/labtests/epithelialcellsinurine.html