Biology basis of life

primeoglegend's version from 2016-05-09 05:03

Section 1

Question Answer
CarbohydratesMajor source of energy and includes sugars and stratches made up of carbon, hydrogen, and oxygen
ProteinsNitrogen-containing compounds made up of chains of amino acids. 20 amino acids can combine to form a great variety of protein moecules
Lipids(Fats and Oils):Composed of glycerol and fatty acids. Provides insulation, stores energy, cushion internal organs.
Nucleic AcidsDirect the instruction of proteins. Genetic information an organism receives from its parents. Two types: DNA & RNA

Section 2

Question Answer
ChloroplastCaptures sunlight for photosynthesis
Golgi BodyPackages and distributes products
LysosomesDigests excess products and food particles
MitochondriaTransform energy through respiration
NucleusContains DNA which controls cellular activities
RibosomeProduces proteins
VacuoleStores substances
Cell (Plasma) Memebramephospholipid bilayer that protects and encloses the cell; controls transport, maintains homeostasis
Cell WallRigid second layer that encloses and protects the cell (plant cells and some bacteria)
CytoplasmJelly like substance in which the cell's organelles are suspended
Endoplasmic ReticulumSite of chemical reactions: ROUGH - contains ribosomes; SMOOTH - lipid produciton
Cytoskeletonprovides internal structure: MICROFILAMENTS - fibers; MICROTUBULES - cylinders

Section 3

Question Answer
UnicellularOrganism that exists as a single cell
MuticellularOrganism that exists as specialized groups of cells: cells>tissues>organs>organ systems
ProkaryoteNuclear material in the center of the cell but not enclosed within a nucleus. No membrane bound organelles. Found in bacteria
EukaryoteContains a nucleus and membrane-bound organelles - found in plants, animals, fungi and protists