1.2 Cells Flashcards
(16 cards)
NUCLEUS
- Contains hereditary material (DNA and RNA)
- Encodes Info for protein synthesis
- Houses 3 types of RNA, Move to cytoplasm for protein synthesis
- mRNA messenger RNA
- rRNA Ribosomal RNA
- tRNA Transfer RNA
CHROMATIN
-COMPLETE STRUCTURE OF DNA
NUCLEOLUS
-rRNA IS PROCESSED INTO RIBOSOMES
NUCLEAR ENVELOPE
- SURROUNDS NUCLEUS
- 2 NUCLEAR MEMBRANES
- MATERIALS MOVES THROUGH PORES
CYTOPLASM
- SOLUTION CONTAINING WATER ELECTROLYTES, PROTEINS, FATS, AND GLYCOGEN ORGANELLES
- ORGANELLES FOUND INSIDE : RIBOSOMES, ER, GOLGI COMPLEX, MITOCHONDRIA, LYSOSOMES.
RIBOSOMES
SITE OF PROTEIN SYNTHESIS
ENDOPLASMIC RETICULUM
- TRANSPORT SYSTEM FOR SUBSTANCE
- ROUGH ER: CARRIES RIBOSOMES, SYNTHESIZE LYSOSOMAL ENZYMES
- SMOOTH ER:DOES NOT CARRY RIBOSOMES. LIPIDS, LIPOPROTEINS AND STEROID HORMONES ARE MADE.
GOLGI APPERATUS
-MODIFIES SUBSTANCE PRODUCED IN ER AND PACKAGES THEM INTO VESICLES
LYSOSOMES
- DIGESTIVE CAPACITY OF CELL
- HUGE ROLE IN METABOLISM
- BREAKS DOWN MATERIAL THROUGH HETEROPHAGY OR AUTOPHAGY
MITOCHONDRIA
- POWER HOUSE OF CELL
- TRANSFORMS ORGANIC COMPOUNDS INTO ENERGY
- CELLS STORE THE ENERGY AS ATP
CYTOSKELETON
NETWORK OF MICRO-TUBES AND MICROFILAMENTS
MICOTUBULES
MADE OF PROTEIN SUBUNITS CALLED TUBULINS
CENTROLS
HELPS TO SEPARATE AND MOVE CHROMOSOMES
MICROFILAMENT
THREAD LIKE STRUCTURES THAT PROVIDES SUPPORT FOR CELLS.
3 TYPES- 1). THIN MICROFILAMENTS 2). INTERMEDIATE FILAMENTS 3).THICK MYOSIN FILAMENTS
CILIA
FUNCTION IN CELL MOBILITY
PLASMA CELL MEMBRANE
SEMIPERMEABLE MEMBRANE
COMPOSED OF LIPIDS, PHOSPHOLIPIDS, GLYCOLIPIDS, AND CHOLESTEROL.