University:
Mississippi College
Course:
BIO 305 | Cell Biology
Academic year:

2022
Views:

356

Pages:

2
Author:

Abby D.

Ch. 1 Principles of LifeBiology- - scientific study of life, which includes all living things ororganisms. Believe we all come from one organisms.a single originCharacteristics sharedDNAcellsGenetic infoenergy from the environmentreplicate genetic info when reproducingevolve through changes in genetic infoviruses - not composed of cells can't carry out most functions ontheir own. they use cells they invade to perform functions. Containgenetic info, they mutate and evolve.Estimate earth formed between 4.6 and 4.5 billion years agonudeic acids - molecules that could reproduce themselves and alsocontain the information for the synthesis, or menufacture of otherlarge molecules wl complex but s taple shapes.proteinsmembrane formation- - resulted in the first cells able to reproduce.cell- a membrane surrounded and enclosed complex proteins andother biological molecules.prokaryotes - S ingle cells containing genetic material and Otherbiochemical Structures enclosed in a membrane.descendants bacteriaearly Stayes confined ocean fed off complex molecuksin the waterThe water in the Ocean helped shield from 3 light S ince noO2 was present Ch.l.lprokaryoter-store then break down molecures and then getenergyPhotosynthesis- the set of chemical reactions that transformsthe energy of sunlight into chemical-bund energy of the sugarglucose and other relatively small biological molecules.organisms trees, grosses giraffes use as food- produced O2lack nuclei,Aerobic metabilism-chemical reactions that releases energy from lifesmolecules by using O2anaerobic metabolism- reactions that extracts energy withoutusing O2.Water protested organisms from high UV rad iationorganelles-membrane-enclosed compartments.specialized cellular functions performed inside themnucleuseukaryotesandendosymblosis-"iiving inside another"indigestron of smaller cellsby larger cells.mitochondrial - release energy for use by a elakaryotic cell evolvedfrom prokaryotic organisms.chloroplasts- organelles specialized to conduct photosynthesisM heakaryotic photosynthetic organisms, two cells can helpeach other (nost cell helps smaller partners).