VERIFIED QUESTIONS WITH DETAILED SOLUTIONS ASSURED
PASS
Gene expression
DNA directs RNA synthesis and controls protein synthesis
Components of nucleic acids
-Nitrogenous base
-sugars
-phosphate group
Nitrogenous bases in nucleotide
- (C)ytosine
- (T)hymine---(DNA)
-(U)racil---- (RNA)
-(A)denine
-(G)uanine
,Sugars (nucleotides)
-Deoxyribose
-Ribose
Difference between Deoxyribose and Ribose
Deoxyribose lacks an oxygen atom
Thin section of specimen
Reveals internal structure
Cross sections
TEM
3D image of the surface of a specimen
SEM
SEM
, TEM
Differences between Eukarytic and prokaryotic cells
Eu: nucleus
Pro: nucleoid
Nucleus size, structure, function
5micrometers, nuclear envelope double membrane, lamina
- information central : DNA
Chromatin:
Complex of DNA and proteins making up chromosomes
Ribosomes
-Protein factory
-No membrane
-can be floating, bound to ER or nucleus envelope