CELL STRUCTURE & FUNCTION

Question 1

WHICH OF THE FOLLOWING ARE TRUE STATEMENTS?

Answer 1

• THE CELL MEMBRANE IS ALSO REFERRED TO AS THE PLASMA MEMBRANE
• EVERYTHING WITHIN THE CELL MEMBRANE IS THE CYTOPLASM
• THE CELL MEMBRANE IS A PROTECTIVE BARRIER & HOLD THE CELL TOGETHER

-THE CELL MEMBRANE IS PARTIALLY MADE OF A PHOSPHOLIPID LAYER

• THE CELL MEMBRANE IS REFERRED TO AS “SEMIPERMEABLE” B/C IT IS SELECTIVE OF WHAT PASSES THROUGH THE MEMBRANE & WHAT DOESN’T
• THE MOST IMPORTANT THING TO REMEMBER ASSOCIATED WITH THE CELL MEMBRANE IS WHAT IT IS MADE OF.

WHAT IT IS MADE OF TELLS US ALOT ABOUT ITS FUNCTION

THE CELL MEMBRANE IS MADE OF A DOUBLE PHOSPHOLIPID BI-LAYER

REMEMBER! PHOSPHOLIPIDS HAE HYDROPHOBIC TAILS & A HYDROPHILIC HEADS. YOU CAN ALSO FIND CHOLESTEROL & PROTEINS IN THE CELL MEMBRANE

Question 2

TRUE OR FALSE
THE CYTOPLASM IS ANOTHER WORD FOR CYTOSOL ?

Answer 2

FALSE.

THEY CYTOPLASM IS MADE UP OF CYTOSOL & ORGANELLES WITHIN THE CELL. THEY CYTOPLASM IS REFERRING TO EVERYTHING WITHIN THE CELL MEMBRANE. CYTOSOL IS A LIQUID THAT ALL OF THE ORGANELLES ARE SUSPENDED IN.

Question 3

WHERE DOES THE ENERGY FROM NUTRIENTS CONVERT INTO CELLULAR ENERGY?

Answer 3

MITOCHONDRIA

WITHIN THE MITOCHONDRIA, ENERGY FROM NUTRIENTS IS CONVERTED INTO CELLULAR ENERGY IN THE FORM OF ATP.

Question 4

WHICH ORGANELLE DESTROYS WASTE AND OLD DAMAGED CELLS?

Answer 4

LYSOSOMES.

LYSOSOMES ARE VESICLES THAT OCNTAIN STRONG DIGESTIVE ENZYMES THAT BREAKDOWN WASTE & FOREIGN MATERIALS. THEY ALSO DESTROY OLD AND DAMAGED CELLS THROUGH PHAGOCYTOSIS.

Question 5

WHICH ORGANELLE IS THE SITE OF PROTEIN SYNTHESIS?

Answer 5

RIBOSOMES.

PROTEINS ARE MADE IN THE RIBOSOMES . SPECIFICALLY TRANSLATION HAPPENS IN THE RIBOSOMES.

Question 6

WHICH ORGANELLE IS WHERE DNA IS STORED?

Answer 6

NUCLEUS.

WITHIN THE NUCLEUS IS WHERE YOU WILL FIND DNA.

THE NUCLEUS IS ALSO KNOWN AS THE “BRAIN” OF THE CELL B/C IT HOLDS ALL THE INFO NEEDED TO CONDUCT THE CELL’S FUNCTIONS.

ANOTHER IMPORTANT THING TO NOTE IS THE NUCLEUS HAS ITS OWN NUCLEAR MEMBRANE (SIMILAR TO THE CELL’S MEMBRANE)

IF ITS DOUBLE LAYERED WITH PORES THAT CONTROL WHAT COMES IN AND OUT OF THE NUCLEUS

THE NUCLEUS ALSO HAS A NUCLEOLUS.
THE NUCLEOLUS MAKES RNA.