Gene Expression Achieve

Question 1

RNA splicing involves the removal of introns and splicing together of exons. Which molecule is produced from this process?

Answer 1

Mature mRNA transcript

Question 2

With which molecule does rRNA combine to form the ribosome?

Answer 2

Protein

Question 3

What are processes involved in the gene expression of DNA sequences?

Answer 3

Transcription and translation

Question 4

What is RNA splicing

Answer 4

Important info (exons) are taken and kept in order to understand

Question 5

During the process of RNA splicing, introns are removed. What type of regions are introns?

Answer 5

Non-coding

Question 6

Transcription involves the production of an mRNA molecule. What is the name of the mRNA molecule?

Answer 6

Primary mRNA transcript

Question 7

What is alternate splicing

Answer 7

Where Different mature mRNA transcripts produced from one primary transcript

Question 8

Which RNA molecule combines with proteins to form ribosomes?

Answer 8

rRNA

Question 9

What is in an RNA nucleotide

Answer 9

Ribose sugar, phosphate and nitrogenous base

Question 10

The following are stages of the process of transcription.

X – Primary mRNA transcript produced

Y – Unwinding and breaking of hydrogen bonds between DNA bases

Z – RNA nucleotides added to the 3’ end of the growing chain.

Which of these shows the stages of transcription in the correct order?

Answer 10

Y → Z → X

Question 11

Different proteins are produced from one gene because of alternative RNA splicing.
Why?

Answer 11

Different mature mRNA transcripts are produced depending on which exons are retained

Question 12

Polypeptide chains fold to form a three-dimensional shape. Which bonds hold this three-dimensional shape in place?

Answer 12

Hydrogen bonds

Question 13

Where in a cell does the process of translation take place?

Answer 13

Ribosome

Question 14

What bonds amino acids together to form polypeptide chains?

Answer 14

Peptide bonds

Question 15

In a cell, genes can be expressed, and proteins made. How many genes are expressed within a cell?

Answer 15

Only a fraction of genes are expressed

Question 16

The following processes relate to the genome of an organism.

1) Transcription
2) Translation
3) Transcription and translation
Which process(es) (if any) relate to gene expression?

Answer 16

3 only

Question 17

RNA is a nucleic acid composed of RNA Nucleotides. What is in an RNA nucleotide

Answer 17

Phosphate, ribose sugar and Adenine

Question 18

What cellular structure is formed when rRNA combines with proteins?

Answer 18

Ribosome

Question 19

What term describes three bases on an tRNA molecule?

Answer 19

Anticodon

Question 20

What term describes three bases on an mRNA molecule?

Answer 20

Codon

Question 21

What is the function of an mRNA molecule?

Answer 21

Carries a complimentary copy of the DNA from the nucleus to the ribosome

Question 22

During the process of RNA splicing, exons are spliced together. What type of regions are exons?

Answer 22

Coding regions

Question 23

What are the 4 differences between DNA and RNA

Answer 23

RNA has 1 stand and DNA has 2 strands (double helix)

RNA has uracil while DNA has thymine

RNA has ribose sugar while DNA has deoxyribose sugar

DNA can only be found inside the nucleus of a cell while RNA can be found in out out of the nucleus

Question 24

Which process enables different proteins to be expressed from one gene?

Answer 24

Alternative splicing

Question 25

The physical expression of a characteristic is determined by the protein produced as a result of gene expression.

What term describes this physical expression of a characteristic?

Answer 25

Phenotype

Question 26

Transcription results in the production of a primary mRNA transcript. What is the name of the enzyme which produced this transcript?

Answer 26

RNA polymerase