Questions to think about Do not just look up answers. Study your notes and then
ID: 194107 • Letter: Q
Question
Questions to think about Do not just look up answers. Study your notes and then test yourself. 1. If protein X is very abundant in a cell, which one of the following must be true? a. there are several copies of gene x in the genome b. there are several copies of mRNA for protein x in the cell c. the promoter for gene x is not accessible by the polymerase d. protein X is rapidly stabilized by the proteasome after translation e. protein X is basally phosphorylated 2. What drives differentiation of a cell? a. changes in the abundance of tRNA b. differential production of rRNA for ribosome assembly c. changes made in DNA replication d. redistribution of chromosomes between cell types e. differential gene expression 3. What is(are) the difference(s) between DNA and RNA : (circle all that apply) a. DNA polymerases go 5' to 3',RNA polymerases go 3' to 5 b. DNA forms 5' to 3 linkages since it is deoxygenated, RNA forms 5' to 2 c. DNA is double stranded, RNA is single stranded d. DNA has a -H at the 2' position, RNA has a-OH at the 2' position e. RNA uses Thymine, DNA uses Uracil 4. Splicing removes: (circle all that apply) a. DNA b. introns c. exons d. promoters e. RNA 5. Fill in the blanks in the following statement. Transcription is the process of making from Translation is the process of making from 6. Be able to comnaroExplanation / Answer
Answer=
3] The difference between DNA and RNA is
c]DNA is double stranded RNA is single stranded
explaination= DNA is double stranded while RNA is single stranded it is folded on itself
d] DNA has a-H at the 2' position ,RNA has a -OH at the 2'position.
DNA contains deoxyribose sugar which has a hydrogen atom at its 2'position.
while RNA has ribose sugar has a -OH at its 2'position.
4] Splicing removes
b]introns
explaination=splicing is the process of removal of introns & exons are joined together.
it is the editing of nascent precursor mRNA.
5]Transcription is the process of making RNA from DNA
explaination -Transcription is the process of making RNA from DNA by using RNA polymerase enzyme in 5'-3'direction.
Translation is the process of making Proteins from RNA.
explaination=
Translation is the process of making Proteins from RNA.
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