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Lab2: Gene Explorer

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卡片总数: 24 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

卡片预览 (24 张)

#1
正面 (问题)

Draw a time line of how the DNA goes to a polypeptides.

背面 (解答)

DNA ——(transcription by RNA pol)— Pre mRNA ——- (CAP+Poly A tail+splicing out introns)——- Mature mRNA——(translation by ribosome)— polypeptide

#2
正面 (问题)

What is the function of an mRNA

背面 (解答)

To communicate with the rest of the cell

#3
正面 (问题)

What is the fundamental composition for nucleotides?

背面 (解答)

1- Nitrogenous base (C, T, U, A or G) 2-Pentase Sugar: deoxyribose or ribose 3-Phosphate group

#4
正面 (问题)

mRNA reads what?

背面 (解答)

Codons (sets of 3 bases)

#5
正面 (问题)

Codons codes for what type of macromolecules?

背面 (解答)

Amino acids

#6
正面 (问题)

What compose the backbone structure of nucleotides?

背面 (解答)

-Pentase sugar -phosphate group

#7
正面 (问题)

What is the principle of DNA synthesis?

背面 (解答)

Always adding new nucleotides at 3’ end

#8
正面 (问题)

What type of bonds is formed by déshydratation synthesis?

背面 (解答)

Phosphodiester bond

#9
正面 (问题)

What is the function of DNA pol 1?

背面 (解答)

Replaces RNA primer with DNA

#10
正面 (问题)

What is the role of DNA pol II?

背面 (解答)

Repairs mis-matched bases

#11
正面 (问题)

In gene explorer what disappears on the mature mRNA and protein strand?

背面 (解答)

Introns

#12
正面 (问题)

What is the function of DNA pol III?

背面 (解答)

Enzyme required for DNA synthesis and adds a nucleotide on the 5’ to 3’ direction

#13
正面 (问题)

What is the function of a primer?

背面 (解答)

Provides a free 3’-OH end to bind with the 5’ phosphate

#14
正面 (问题)

What is the role of the promoter?

背面 (解答)

Initiate transcription when the RNA pol binds

#15
正面 (问题)

What is an intron?

背面 (解答)

Non-protein-coding intervening sequences that are spliced for mRNA

#16
正面 (问题)

What is an exon?

背面 (解答)

A sequence present in protein-coding mRNA after completion of pre-mRNA splicing

#17
正面 (问题)

What is the function of the terminator?

背面 (解答)

Stops the transcription (when RNA pol falls of the DNA)

#18
正面 (问题)

What is the code for a start codon?

背面 (解答)

AUG

#19
正面 (问题)

What are the 3 possibles codes for the stop codons?

背面 (解答)

-UAA -UAG -UGA

#20
正面 (问题)

What is the role of the snurps?

背面 (解答)

Removes introns and joins exon together on the mature- mRNA strand

#21
正面 (问题)

How do we recognize the intron start?

背面 (解答)

5’-GUGCG-3’

#22
正面 (问题)

How do we recognize the intron end?

背面 (解答)

5’-CAAAG-3’

#23
正面 (问题)

What type of mutation causes frame shift mutation?

背面 (解答)

-insertion -deletion

#24
正面 (问题)

What is the significance of a mis sense mutation?

背面 (解答)

Results in a amino acid substitution