Exam 1 Flashcards
What are cells?
basic unit of all living things
All life is _____
cellular
Viruses are not alive and therefore not ______
cellular
Viruses can not ____
reproduce
All cells _____
reproduce
Cell theory
1.) all living things consist of one or more cells
2.) all currently existing cells come from other cells
Two main types of cells:
prokaryotes and eukaryotes
Characteristics of Prokaryotes
no nucleus, no membrane bound organelles, circular DNA
Characteristics of Eukaryotes
have nucleus and membrane bound organelles, linear DNA inside nucleus
Commonalities Between all Cells
-cell membrane made of phospholipids
-watery interior – cytosol
-carbohydrates
-lipids
-ATP
-DNA (nucleic acid) –(transcription)–> RNA –(translation)–> Protein (amino acids)
Differences Between Cells
-size and shape vary a lot
-nucleus in euk; not in pro
-Linear chromosomes in euk and circular DNA in pro
-organelles in eukT
Are the terms “prokaryote” and “eukaryote” synonymous?
No, prokaryotes include bacteria AND archaea