Plant And Animal Cells
Guard Cells
Guard Cells help to regulate the rate of transpiration by opening and closing the stomata thus preventing excessive water loss. The guard cell opens when there is too much water. It is also adapted for gas exchange between plants and environment. For example, it opens during rainy days and closes when the weather is too dry or windy. They also control the size of the pore.
Guard Cells help to regulate the rate of transpiration by opening and closing the stomata thus preventing excessive water loss. The guard cell opens when there is too much water. It is also adapted for gas exchange between plants and environment. For example, it opens during rainy days and closes when the weather is too dry or windy. They also control the size of the pore.
Xylem Cells
The xylem is the system of tubes and transport cells that circulates water and dissolved minerals from roots to leaves in vascular plants. Xylem is made of vessels connected end to end for the maximum speed to move water around and also have a lesser function of support.
The xylem is the system of tubes and transport cells that circulates water and dissolved minerals from roots to leaves in vascular plants. Xylem is made of vessels connected end to end for the maximum speed to move water around and also have a lesser function of support.
Phloem Cells
The phloem is mainly concerned with the transport of soluble organic material made during photosynthesis. This is called translocation.
The phloem is mainly concerned with the transport of soluble organic material made during photosynthesis. This is called translocation.
White Blood Cells
White blood cells are blood components that protect the body from infectious agents. Also called leukocytes, white blood cells play an important role in the immune system by identifying, destroying, and removing pathogens, damaged cells, cancerous cells, and foreign matter from the body.
White blood cells are blood components that protect the body from infectious agents. Also called leukocytes, white blood cells play an important role in the immune system by identifying, destroying, and removing pathogens, damaged cells, cancerous cells, and foreign matter from the body.
Fat Cells
Fat cells provide triglycerides to fuel much of the body's internal work and physical activity. The layer of fat under the skin insulates the body to keep it warm. Pads of fat act as shock absorbers and support and cushion vital organs.
Fat cells provide triglycerides to fuel much of the body's internal work and physical activity. The layer of fat under the skin insulates the body to keep it warm. Pads of fat act as shock absorbers and support and cushion vital organs.
Epidermal Cells
The epidermis is the outermost cellular layer which covers the whole plant structure. It is composed of a single layer of living cells, although there are exceptions. Epidermis is usually closely packed, without intercellular spaces or chloroplasts.
The epidermis is the outermost cellular layer which covers the whole plant structure. It is composed of a single layer of living cells, although there are exceptions. Epidermis is usually closely packed, without intercellular spaces or chloroplasts.
Root Hair Cells
They allow a plant to absorb minerals by increasing the surface area; this is extremely beneficial to plants that are in dry areas.
They allow a plant to absorb minerals by increasing the surface area; this is extremely beneficial to plants that are in dry areas.
Red Blood Cells
The primary function of red blood cells is to carry oxygen from the lungs to the tissues around your body. As a secondary function, they are also a key player in getting waste carbon dioxide from your tissues to your lungs, where it can be breathed out.
The primary function of red blood cells is to carry oxygen from the lungs to the tissues around your body. As a secondary function, they are also a key player in getting waste carbon dioxide from your tissues to your lungs, where it can be breathed out.
Nerve Cells
Your nervous system contains millions of nerve cells, called neurons. Neurons are highly specialised to transmit messages from one part of your body to another.
Your nervous system contains millions of nerve cells, called neurons. Neurons are highly specialised to transmit messages from one part of your body to another.
Sperm Cells
The main function of the sperm is to carry the 18,000 male genes to the female's egg. These genes represent the male's contribution to the DNA make-up of a baby.
The main function of the sperm is to carry the 18,000 male genes to the female's egg. These genes represent the male's contribution to the DNA make-up of a baby.