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Biochemistry/ Cells
Essentials of A&P - Ch 3 & Ch4
Term | Definition |
---|---|
Diffusion | passive transport where a solute travels from an area of higher concentration to an area of lesser concentration with the gradient. |
Osmosis | passive transport where water (solvent) travels thru a selectively permeable membrane when a concentration gradient is present. |
Facilitated Diffusion | Carrier-mediated passive transport is a variation of diffusion in which a carrier molecule helps a substance move across the membrane |
Filtration | pressure is applied to force water and its dissolved materials across a membrane. |
Active Transport (3 types) | 1. Active Transport Pumps 2. Endocytosis 3. Exocytosis |
Pinocytosis | liquid brining liquid is brought inside the cell using ATP. |
Active Transport Pumps | require ATP energy to move substances against the concentration gradient |
Cell Membrane | surrounds the cytoplasm and provides a protective covering. |
Chromatin | material found in the nucleus that contains the DNA. |
Mitochondria | power houses of the cell |
Lysosomes | vesicles containing powerful hydrolytic enzymes that take care of cleaning intracellularp |
Golgi Apparatus | receives protein from endoplasmic reticulum and processes/ stores in |
Cilia | short, microscopic located on the outside surface |
Mitosis | produces replacement cells, asexual cellular reproduction. |
Meiosis | produces gametes that provide half of the chromosomes. |
Mitosis, Benign Tumors | grow slowly and push healthy cells out of the way. NOT life-threatening. |
Mitosis, Malignant Tumors | grow rapidly and invade, health cell tissue. |
Mitosis, Metastasis | parts break off and travel thru the blood or lymph system and start tumors in other parts of the body. |
Viruses | infectious particles that have a core containing genetic material surrounded by a protective protein coat called a capsid. |
MRSA | Methicillin-resistant Staphylococcus aureus |
VRE | Vancomyocin-resistant Escheria Coli |
Cells | fundamental units of living organisms. |
ATP | adenosine triphosphate |
Cytokinesis | division of the cytoplasm and organelles. |
Bacteria | simple one-celled organisms without a nucleus or many organelles |
Protozoa | one celled organism that can cause disease thru ingestions or insect bites. |