Kertas Ramalan SPM / Di
is
ade
N
4
1 Which of the following organelles is abundant
in the cells of the salivary glands and pancreatic
cells?
Antara organel berikut, yang manakah terdapat
dengan banyak di dalam sel kelenjar liur dan sel
pankreas?
A Chloroplast
Kloroplas
B Mitochondrion
Mitokondrion
C Rough endoplasmic reticulum
Jalinan endoplasma kasar
D Golgi apparatus
Jasad Golgi

As you can see pancreatic cells and salivary gland has both Golgi apparatus and RER

tissue

explanation:

it is actually formed by geoup of cells which is tissue

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.