QUESTION 1 EXAM QUESTIONS Flashcards
DESCRIBE ROUGH ER
CELLULAR ORGANELLES ARE COMPOSED OF MANY FOLD OF TISSUES
produces secretory proteins further processed and modified in the ER
DESCRIBE SMOOTH ER
MESHWORK OF FINE TUBULAR MEMBRANE VESICLES
WHAT IS /DESCRIBE GOLGI APPARATUS
CELLULAR ORGANELLE COMPOSED OF FLATTENED MEMBRANE SACS CALLED CISTERNAE
GOLGI DIAGRAM
CHECK
GOLGI APPARATUS FUNCTIONS
1)MODIFICATION OF PRODCUTS
2)SORTING AND TRASNPORT OF PRODUCTS
3)STORAGE OF PRODUCTS
FUNCTIONS OF ROUGH ER
1)PROTEIN SYNTHESIS MAKE PROTEIN
2)MAKES NEW MEMBRANE
FUNCTIONS OF SMOOTH ER
1)DETOXIFICATION OF DRUGS AND POISONS
2)STORES CALCIUM
3)SYNTHESIS OF LIPIDS AND STEROIDS
WHAT IS CYTOSKELETON
NETWORK OF PROTEIN FILAMENTS THAT EXTEND THROUGH THE CELL
FUNCTION OF CYTOSKELETON
PROVIDES MECHANICAL SUPPORT FOR THE CELL
WHAT ARE THE 3 COMPONENTS IOF THE CYTOSKELENTON AND THEIR FUNCTIONS
MICROTUBULES-FORM A RIGID INTERNAL SKELETON
INTERMEDIATE FILAMENTS-STABILISE CELL STRUCTURE
MICROFILAMENTS-STABALISE CELL SHAPE
DIAGRAM NUCLEUS DRAW
CHECK
3 NUCLEUS FUNCTIONS
1)REPLICATION-MEDIATES COPYING OF DNA IN THE CELL CYCLE ,ESSENTIAL FOR GROWTH
2)TRANSCRIPTION-CONTROLS PRODUCTION OF MRNA IS PRODUCED IN THE NUCLEUS USING DNA AS A TEMPLATE
3)TRANSLATION-MRNA IS TRANSPORTED VIA THE NUCLEAR PORES TO THE CYCTOPLASM FOR THE SYNTHESIS OF SPECIFIC PROTEINS
TWO TYPES OF TRANSPORT PROTEIN FOUND IN THE CELL MEMBRANE
CARRIER AND CHANNEL
SHOW HOW THEY TRANSPORT
CELL MEMBRANE FUNCTIONSAND DIAGRAM
-REGULATES ENTRY AND EXIT OF SUBSRTANCES
-CELL COMMUNICATION
-FORMS THE CELL BOUNDARY AND ENCLOSES CELL CONTENTS
WHAT IS A LYOSOME AND HOW DOES IT DIGEST MATERIAL TAKEN INTO THE CELL
a membrane-bound organelle found in animal cells.
lysosomes’ fuse with vesicles
releasing their enzymes to digest them
