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A and P Chap 3


-outer boundary of the cell -selectively permeable-permits entrance and exit of some material, excludes the transfer of other substances Cell membrane
clear semifluid medium that fills the spaces around the chromatin and nucleous within the nucleus Nucleoplasm
-network of membranous tubules -roadway of transportation of material used within the cells Endoplasmic Reticulum
Ribosomes attached---protein synthesis occur Rough ER
Cholesterol synthesis and fat metabolism occur Smooth ER
-store hereditary material -the chromatin condenses to form short, rodlike structures -the number for a human being is 46 Chromosome
protection to the nucleus Nuclear membrane
fats that contain carbon,hydrogen,oxygen,phosphorus Phosolipids
microscopic structure within cell having a special function or capacity Organelle
basic unit of structure and function of all living things Cell
DNA and protein material in a loose condense and diffusion state. During mitosis chromatin condenses to form chromosomes Chromatin
-hairlike threads -sweep materials across cell surface Cilia
have an equal amount of solutes and water, so the osomotic pressure is equal and there is no movement of water. The solutions are Isotonic Solution
contain less solutes so water will move into a cell and disperse the concentration---Fresh Water RBC will swell Hypotonic Solution
Contains more solutes so water will move to dilute the concentration----Salt Water RBC will shrivel Hypertonic Solution
Powerful digestive enzymes that digest protein molecules----"suicide bags" Lysosomes
Cells divide for growth and maintenance, cell divides into 2, to reproduce themselves,each is an exct genetic duplicate, 5 stages, occurs at different rates in different cell, bone marrow cells and skin cells reproduce continuously,muscle cells reproduce Mitosis
Involves reproductin, process of cell division of the sex cells, the egg of female and the sperm of the male each reduce their number of chromosomes by half=23, the sex cells then combine,if fertilized, to form a new simple cell called zygote with 46 chr. Meiosis
Involves passive transport,can occur using blood pressure or gravity, water and material move from an area of higher pressure to an area of lower pressure. The size of the membrane pore determines which molecules are to be filtered Filtration
No energy is required for transport Passive Transport
Energy is required for transport Active Transport
Control center of the cell Nucleus
Created by: Shereeka