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Flashcards in 5.0 Introduction Deck (7)
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1
Q

What is the structure of cell membranes?

A

composed of lipids, proteins, and carbohydrates

2
Q

What is the plasma membrane?

A

a selective barrier that controls the movement of molecules between the inside and outside of the cell

3
Q

Describe the internal organization of cells.

A

cells can be classified as prokaryotes or eukaryotes, which differ in their degree of internal compartmentalization

4
Q

What is the endomembrane system?

A

an interconnected system of membranes that defines spaces in the cell, synthesizes important molecules, and traffics and sorts these molecules in and out of the cell

5
Q

What do mitochondria and chloroplasts both do?

A

they are organelles that harness energy, and likely evolved from free-living prokaryotes

6
Q

What is the cell theory?

A
  • all organisms are made up of cells
  • cells are the fundamental unit of life
  • cells come from preexisting cells

there is no life without cells, and cells are the smallest units of life

7
Q

What led to the development of the cell theory?

A

cells differ in size and shape, but they share many features