cells

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what is a cell
The smallest structual and functional unit of an organism which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane.
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how does the membrane work
The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.
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what does the nucleus do
The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromos
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what is a white blood cell
White blood cell, also called leukocyte or white corpuscle, a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of motility, and defends the body against infection and disease by ingesting foreign materials and cellular
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what is a red blood cell
Production of red blood cells is controlled by erythropoietin, a hormone produced primarily by the kidneys. Red blood cells start as immature cells in the bone marrow and after approximately seven days of maturation are released into the bloodstream.
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how do cells work
The cells in our bodies, however, work together with similar cells to form structures called tissues. Tissues make up the different organs and functional material in our bodies. ... DNA is the genetic blueprint for the cell that contains all the nece
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how does the membrane work

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The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.

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what does the nucleus do

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Card 4

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what is a white blood cell

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what is a red blood cell

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