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How does the external surface and covering of the cell compare with the walls of plant cells?
The external surface of animal cells is typically composed of a flexible cell membrane that regulates the movement of substances in and out, while plant cells have a rigid cell wall made primarily of cellulose. The cell wall provides structural support and protection, giving plant cells their shape, whereas the cell membrane in animal cells allows for greater flexibility and interaction with the environment. Additionally, plant cell walls can also contain lignin and pectin, which contribute to their strength and rigidity. Overall, the primary distinction lies in the rigidity and composition of the plant cell wall compared to the more fluid and dynamic nature of the animal cell membrane.
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What kind of tissue closely packed cells covering a surface?
It seems to be a protective tissue.
What is the collection of carbohydrate groups on a human cell's external surface called?
The collection of carbohydrate groups on a human cell's external surface is called the glycocalyx. These carbohydrate groups play important roles in cell-cell recognition, adhesion, and signaling.
Does epithelium consists of closely packed cells?
Yes, epithelium consists of closely packed cells that form the protective covering of internal and external surfaces of the body. These cells are tightly packed together with minimal extracellular matrix between them.
Are plasma membrane outermost component of all cells?
Yes, the plasma membrane is the outermost component of all cells. It acts as a barrier that separates the interior of the cell from its external environment, controlling the movement of substances in and out of the cell.
Is the Apical surface of the epithelium the deepest layer of cells?
No, the apical surface of the epithelium is not the deepest layer of cells; rather, it is the outermost layer that faces the lumen or external environment. The deepest layer of epithelial cells is referred to as the basal layer, which rests on the basement membrane. The apical surface is involved in functions such as absorption, secretion, and sensation, depending on the type of epithelium.
What kind of tissue closely packed cells covering a surface?
It seems to be a protective tissue.
What is free surface?
An epithelium always has on surface where the cells are exposed either to the external environment or to an internal passageway or cavity; this surface is called the free surface of the epithelium.
Which part of the epithelial cells faces the body surface?
no bone cells provide protection and support
Are the cells that form a protective covering around an animal's entire body called skin cells?
Yes, the cells that form a protective covering around an animal's entire body are called skin cells. The skin is the largest organ in the body and plays a vital role in protecting the body from external factors such as infection and injury.
What is the collection of carbohydrate groups on a human cell's external surface called?
The collection of carbohydrate groups on a human cell's external surface is called the glycocalyx. These carbohydrate groups play important roles in cell-cell recognition, adhesion, and signaling.
Which immunoglobulin class is attached to the external surface of B cells and acts as an antigen receptor of the B cell?
B cells do not contain any antibodies on their surface. Generally, B cells produce all the antibodies in the body is in need of; as instructed by T helper cells (CD4+ cells).
Why are the cells of epithelial tissue tightly placed against each other?
It is because cells of epithelial tissues are found covering numerous internal and external surfaces of the body and may also be modified to form glandular structures.
How do you compare the surface are to volume ratio of cells of different size?
You need to:* Calculate the surface area * Calculate the volume * Divide the surface area by the volume
Does epithelium consists of closely packed cells?
Yes, epithelium consists of closely packed cells that form the protective covering of internal and external surfaces of the body. These cells are tightly packed together with minimal extracellular matrix between them.
Are plasma membrane outermost component of all cells?
Yes, the plasma membrane is the outermost component of all cells. It acts as a barrier that separates the interior of the cell from its external environment, controlling the movement of substances in and out of the cell.
What is a definition of an epidermis?
ep·i·der·mis /ˌepiˈdərmis/NounThe outer layer of cells covering an organism, in particular.The surface epithelium of the skin of an animal, overlying the dermis.Synonymscuticle - scarfskin
Is the Apical surface of the epithelium the deepest layer of cells?
No, the apical surface of the epithelium is not the deepest layer of cells; rather, it is the outermost layer that faces the lumen or external environment. The deepest layer of epithelial cells is referred to as the basal layer, which rests on the basement membrane. The apical surface is involved in functions such as absorption, secretion, and sensation, depending on the type of epithelium.
