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Chapter 2

chemistry, cell and tissues

three main parts of the cell plasma membrane, cytoplasm, nucleus
parts of cell- "little organ" like structure organelle
forms outer boundry of cell, thin two layered membrane of phospholids containing proteins, is selectively permeable seperates the inside form the outside plasma membrane
materials that lie within the boundary of the cell(the membrane that surrounds the cell) cytoplasm
may attach to rough ER or lie free in cytoplasm often Called the "PROTEIN FACTOR" Ribsomes
composed of inner and outer membranes, energy releasing chemical reactions Often called POWER Plants of the Cell Contain one DNA molecule mitochondria
the chemical processing and packing center golgi apparatus
serves as the centers for the cellular digestion lysosomes
fine hairlike extensions found on free or exposed surfaces of some cells cilia
"tails" of sperm cells are the only example of flagella in humans flagella
serves as the "brain" for the control of the cell's metabolic actvities and cell division. 46 chromosomes contain DNA, which contains the genetic code. nucleus
does not require energy from the cell passive transport
permits a cell to engulf foreign material phago
used to incorporated fluids or dissolved substances. pino
(requires cell energy in the form of ATP) active transport
transport of substances into and out of the cell. retains the cytoplasm cell membrane
regulates transport of substances into and out of the nucleus nuclear membrane
a clear semifluid medium that fils the spaces around the chromatin and the nucleoli nucleoplasm
functions as a reservoir for RNA nucleolus
provides passage s through which transport of substances occurs in cytoplasm endoplasmic reticulum(ER)
enzymes oxidizes cell substances peroxisome
contains two centroiles that are functional during animal cell division(rod shaped organelles) centrosome and centrioles
Interphase, prophase,metaphase,anaphase and telophase are 5 stages of what? mitosis
DNA Replicate interphase
first stage- chromosomes(pairs of linked chromatids)appear centroiles move away from nucleus prophase
second stage of mitosis metaphase
third phase- centromeres break apart anaphase
fourth stage- cell division is completed cytoplasm is divided (cytokinesis) telophase
forms internal framework cytoskeleton
meaning "colored substance" contains the genetic code chromatin
codes that are stored into individual units chromosomes
membranous sacs vacuoles
the nucleus is surrounded by a membrane called nuclear envelope
possessing a true nucleus eukaryotic
lacking a true nucleus prokaryotic
amino acids are attached together into chains called peptides
ribonucleic acid RNA
deoxyribonucleic acid DNA
adenosine triphosphate ATP
Created by: kfrank1