Cellular Level of Organization
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each of the black spaces below before clicking
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| Cells | the living structural and functional units enclosed by a membrane
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| cells arise from ______________. | Existing cells by cell division
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| what does selective permeability mean? | allows only certain substances to enter or exit the cell
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| what is the cytoplasm? | the fluid portion of the cell
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| where is the cytoplasm? | between the plasma membrane and the nucleus
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| what is the fluid of the cytoplasm called? | cytosol
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| what structures are contained in the cytoplasm? | organelles
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| what are characteristics of organelles? | have characteristic shapes and specific functions
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| what are some examples of organelles? | cytoskeleton, ribosomes, endoplasmic reticulum, gogli complex, lysosomes, peroxisomes, mitochondrion
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| what is the nucleus? | the largest organelle in the cell
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| what does the nucleus contain? | most of the cells DNA, 46 chromosomes, genes
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| what is a chromosome? | a single DNA wound around proteins
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| what are genes? | the hereditary units that control most aspects of cellular structure and funtion found in the DNA
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| what is the lipid bilayer? | basic framework of the plasma membrane made up of back to back layers of 3 parts of lipid molecules
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| what are the three types of lipid molecules? | phospholipids, cholesterol, glycolipid
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| what contains 75% of membrane lipid? | phospholipid
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| what is the phospholipid made of? | head made of phosphate, and tail made of lipid
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| is the phospholipid head hydrophilic or hydrophobic? and why | hydrophilic, the head is made of phosphate and loves water
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| is the tail hydrophilic or hydrophobic? and why | hydrophobic, the tail is made of lipid (fat) and hates water
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| Name the parts of a cell | plasma mebrane, cytoplasm, nucleus
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| what is the plasma membrane | flexible outer surface seperating cell's internal environment from the external environment
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