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Biology chapter 3

Biology study stack chapter 3, review for freshman seminar, covers 3.1 and 3.2

What is the most basic unit of life? cells
Why can't most cells be seen without a microscope? because most cells are microscopic
What did Anton Van Leeuwenhoek call single-celled organisms? animalcules
Who determined that all animals are made of cells? Schwann
Who corrected Schwann's incorrect theory about cells? Virchow
What are the three components of the cell theory? 1) all organisms are made of cells 2)all living cells are produced by other living cells 3) the cell is the most basic unit of life
As far as the storage of DNA goes, what differs between eukaryotic and prokaryotic cells? Prokaryotes-DNA storage in the cytoplasm Eukaryotes- DNA storage in the nucleus
Which kind of cell has membrane-bound organelles? Eukaryotic
Which kind of cell has a cell wall? Prokaryotes
Which kind of microscopes usually have the most magnification, compound or single lens? compound
What is a cell's internal support system called? cytoskeleton
What is the cytoskeleton composed of? small protein sub-units that form fibers that cross the cell
What are the main types of fibers in the cytoskeleton? microtubules, intermediate filaments, and micro filaments
What must the nucleus be able to do? DNA must be easily accessible, as well as protected
Where are ribosomes assembled? In the nucleolus
What is the nucleolus? a dense region in the nucleus
What is the Endoplasmic Reticulum? An interconnected network of folded membranes
What is the function of the Endoplasmic Reticulum? To produce proteins and lipids
What is the Endoplasmic Reticulum called if it has no attached ribodomes? smooth ER
What is the Endoplasmic Reticulum called if it has attached ribodomes? rough ER
Created by: McElweeLA