QUESTION 2 EXAM QUESTIONS

Question 1

STRUCTURE OF RNA

Answer 1

SINGLE STRANDED
SUGAR GROUP IS RIBOSE
THYMINE IS REPLACED WITH URACIL IN RNA

Question 2

DIFFERENCE BETWEEN RNA AND DNA

Answer 2

RNA-SINGLE STRANDED
SUGAR GROUP IS RIBOSE

DNA-DOUVBLE STRANDED
NITROGENOUS GROUPS FORM A BASE PAIR

Question 3

STRUCTURE OF NUCLEOTIDE DRAW

Answer 3

SUGAR,PHOSPHATE GROUP,NITROGENOUS BASE

Question 4

BASE PAIR

Answer 4

ADENINE(A)CAN ONLY BOND WITH THYMINE (T)
GUANINE(G) CAN ONLY BOND WITH CYTOSINE(C)

PURINES BOND WITH PYRIMIDES
A(PURINE)-T(PYRIMIDES)
G(PURINE)-C(PYRIMIDES)

Question 5

WHAT IS COMPLEMENTARY STRAND OF DAN

Answer 5

ORDER OF BASES STRAND 1 DETERMINES THE ORDER OF BASES IN STRAND 2

Question 6

DESCRIBE TRANSFER RNA AND ITS ROLE IN PROTEIN SYNTHESIS

Answer 6

TRNA MATCHES AMINO ACIDS TO MRNA CODORS DURING PROTEIN SYNTHESIS

Question 7

HOW DNA MOLECULE IS REPLICATED

Answer 7

1)HELICASE UNWINDS PARENTAL HELIX
2BINDING PROTEINS STABALIZE SEPERATE STRANDS
3)TOPOISOMEROSE RELIEVES PRESSURE ON THE UNWINDING HELIX
4)PRIMASE ADDS PRIMER TO TEMPLATE STRAND
5)DNA POLYMERASE BINDS NUCLEOTIDES TO FORM A NEW STRAND
6)LIGASE JOIN OKAZAKI FRAGMENT AND SEALS NICKS IN SUGAR PHOSPHATE BACKBONE .

Question 8

ENZYMES INVOLVED IN REPLICATION

Answer 8

PRIMASE,HELICASE,TOPOIMERASE,LIGASE

Question 9

DESCRIBE PROCESS OF TRANSCRIPTION

Answer 9

RNA POLYMERASE BINDS TO DNA AT THE PROMOTER,STARTS COPYING THE DNA INTO RNA (INITIATION),CONTINUES ADDING RNA NUCLEOTIDE ALONG THE DNA TEMPLATE (ELONGATION),STOPS AT THE TERMINATION SIGNAL ,RELEASING THE NEWLY FORMED RNA MOLECULE (TERMINATION)

Question 10

SUMMARY PROCESS OF TRANSLATION

Answer 10

BUILDS PROTEINS FROM THE MRNA INSTRUCTIONS ,RIBOSOMES READ MRNA ,TRYNA BRING AMINO ACIDS,RIBOSOMES LINK THEM TOGETHER,A PROTEIN FORM UNTIL A STOP SIGNAL ENDS THE PROCESS.
(TAKES PLACE IN THE CYTOPLASM)