Flashcards
AP Biology test chapter 4
Flashcards do conjunto (10)
- 1Cell theory (3)1. Cell is basic unit of life
2. All organisms have at least one cell
3. All cells come from other cells. - 2Prokaryotic cell characteristics (4)-no nucleus
-circular (loop) DNA
-no membrane enclosed organelles
-enclosed by plasma membrane (encased in rigid cell wall) - 3Characteristics of Eukaryotic cells (4)-larger and more complex
-true nucleus
-many membrane bound organelles
-linear DNA - 4Cell membrane-Contact/interact with environment
-regulate transport in/out - 5Rough er-Manufactures membranes
-ribosomes of er produces proteins - 6Smooth er-Synthesizes lipids
-regulate carbohydrate metabolism
-break toxins and drugs - 7GolgiReceive and modify ER products, send to other organelles or to cell membrane .
- 8Lysosomes-digestive enzymes in membrane sacs bud from golgi
-damaged / dead cell parts
-destroy bacteria
-digest food
-apoptosis (damaged, infected, cancerous, embryonic development) - 9Large central vacuole-in plants
- gives cel support ; stores water
-has lysosomal and storage functions - 10Endosymbiotic theory and evidence (4)-mitochondria evolved from prokaryotes
Evidence :
-own DNA (circular, sequence similar to prokaryotes)
-have own ribosomes that resemble bacterial ribosomes
-divide by binary fission
-Inner membrane chemically resembles bacterial membrane
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