Copy of CK12 4.4 -4.5 RNA, Transcription of DNA to RNA (2/1/2024)

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40 questions

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4.5 Transcription of DNA to RNA

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What is the main role of RNA in protein synthesis?

Help transfer genetic information from nucleus to cytoplasm

Directly create proteins

Produce genetic information

Lives in the nucleus

Where does DNA reside within a cell?

In the cytoplasm

In the nucleus

In the ribosome

In the RNA

What is the name of the location where proteins are synthesized?

Nucleus

Cytoplasm

on the Ribosomes

DNA

Which molecule directly aids in the creations of proteins?

DNA

Adenine

RNA

ATP

Which nitrogen base does RNA contain instead of thymine?

Adenine (A)

Guanine (G)

Uracil (U)

Cytosine (C)

How many nucleotide chains does RNA consist of?

Four

Three

Two

One

What type of sugar does RNA contain?

Fructose

Deoxyribose

Glucose

Ribose

How does the size of RNA compare to DNA?

Size varies depending on type of RNA

RNA is the same size

RNA is larger

RNA is smaller

What is the role of Messenger RNA (mRNA)?

Copies genetic instructions from DNA

Forms ribosomes

Brings amino acids to ribosomes

Replicates DNA inside the nucleus

Which type of RNA helps to form ribosomes?

Transfer RNA (tRNA)

Helicase RNA (hRNA)

Messenger RNA (mRNA)

Ribosomal RNA (rRNA)

What function does Transfer RNA (tRNA) serve?

Brings amino acids to ribosomes

Helps form ribosomes

Copies genetic instructions from DNA

Breaks down excess proteins

Where does Messenger RNA (mRNA) carry genetic instructions to?

The cell membrane

The ribosomes

The cytoplasm

The mitochondria

What is the process of transcribing information from DNA to RNA called?

Transcription

Translation

Mutation

Replication

Why is transcription important for the cell?

It helps in cell division

It repairs damaged strands of DNA

It converts RNA into DNA

It turns DNA into a useable form - RNA

What are the two processes involved in protein synthesis?

Mutation and Transcription

Transcription and Replication

Transcription and Translation

Replication and Translation

Where does transcription occur in the cell?

Nucleus

Mitochondria

Cytoplasm

Ribosome

What molecule is made during transcription?

mRNA

DNA

rRNA

tRNA

During transcription, DNA serves as a template for what?

Making an RNA molecule

Replicating itself

Breaking down a protein

Creating a protein

What marks the beginning of transcription?

Initiation

Termination

Promoter

Elongation

What role does the RNA polymerase enzyme play in transcription?

Binds to the gene

Creates a complementary sequence of bases

Unwinds the DNA

Reads the bases in one of the DNA strands

What is the name of the region the enzyme binds to during Initiation?

Intron

Promoter

Terminator

Exon

What occurs when RNA polymerase bindings to the promoter region?

DNA replicates

DNA unwinds

DNA binds with mRNA

RNA detaches from the DNA strand

What is the process known as the addition of nucleotides to the mRNA strand?

Elongation

Transcription

Replication

Translation

Which enzyme is responsible for reading the unwound DNA strand and building the mRNA molecule?

DNA polymerase

Ligase

Helicase

RNA polymerase

During the process of elongation, an adenine (A) in DNA binds with which base in RNA?

Uracil (U)

Cytosine (C)

Thymine (T)

Guanine (G)

What happens during the process when the newly formed RNA is bound to the unwound DNA?

RNA splits into two

Protein is produced

mRNA molecule is built

DNA replication occurs

What signifies the end of transcription?

When RNA polymerase starts a new sequence

When DNA detaches from mRNA

When RNA polymerase crosses a stop sequence

When a start sequence is met

What is the function of the termination sequence in RNA transcription?

Signals the end of transcription

Binds mRNA to tRNA

Starts the transcription process

Replicates the DNA sequence

What happens to the mRNA strand after transcription?

It attaches to another DNA

It replicates itself

It detaches from DNA

It starts the transcription process anew

What is removed from mRNA during the process of splicing?

Introns

Nucleotides

Exons

Ribonucleoproteins

What does mRNA consist of after the splicing process?

Exons

Introns

Nucleotides

Ribonucleoproteins

What kind of proteins are involved in pre-mRNA splicing?

Introns

Exons

Ribonucleoproteins

Small nuclear ribonuclearproteins

What happens during the editing of mRNA?

No changes are made to the nucleotides.

All nucleotides are replaced.

Some nucleotides are changed.

Some nucleotides are removed.

What is the function of the human protein APOB?

It helps transport lipids in the blood.

It promotes muscle growth.

It aids digestion.

It accelerates energy production.

How does editing affect the APOB protein?

It diminishes the function of the protein.

It creates two different forms.

It increases the size of the protein.

It makes the protein inactive.

Why is one form of APOB protein smaller than the other?

Editing adds a premature stop signal in the mRNA.

The bigger form has additional nucleotides.

The smaller form is a premature version.

Editing removes some nucleotides.

What is the process of adding a 'tail' to the mRNA called?

Polycytidylylation

Polyadenylation

Polyribosylation

Polyguanylylation

What does the 'tail' of the mRNA consist of?

A string of Ts (thymine bases)

A string of Cs (cytosine bases)

A string of Gs (guanine bases)

A string of As (adenine bases)

What is one role of the 'tail' in mRNA?

It signals the middle of mRNA

It signals the end of mRNA

It signals a mutation in mRNA

It signals the start of mRNA

How does the 'tail' protect mRNA?

From antibodies that might attack it

From viruses that might infect it

From enzymes that might break it down

From mutagens that might alter it

What is the main role of RNA in protein synthesis?

Help transfer genetic information from nucleus to cytoplasm

Directly create proteins

Produce genetic information

Lives in the nucleus

Where does DNA reside within a cell?

In the cytoplasm

In the nucleus

In the ribosome

In the RNA

What is the name of the location where proteins are synthesized?

Nucleus

Cytoplasm

on the Ribosomes

DNA

Which molecule directly aids in the creations of proteins?

DNA

Adenine

RNA

ATP

Which nitrogen base does RNA contain instead of thymine?

Adenine (A)

Guanine (G)

Uracil (U)

Cytosine (C)

How many nucleotide chains does RNA consist of?

Four

Three

Two

One

What type of sugar does RNA contain?

Fructose

Deoxyribose

Glucose

Ribose

How does the size of RNA compare to DNA?

Size varies depending on type of RNA

RNA is the same size

RNA is larger

RNA is smaller

What is the role of Messenger RNA (mRNA)?

Copies genetic instructions from DNA

Forms ribosomes

Brings amino acids to ribosomes

Replicates DNA inside the nucleus

Which type of RNA helps to form ribosomes?

Transfer RNA (tRNA)

Helicase RNA (hRNA)

Messenger RNA (mRNA)

Ribosomal RNA (rRNA)

What function does Transfer RNA (tRNA) serve?

Brings amino acids to ribosomes

Helps form ribosomes

Copies genetic instructions from DNA

Breaks down excess proteins

Where does Messenger RNA (mRNA) carry genetic instructions to?

The cell membrane

The ribosomes

The cytoplasm

The mitochondria

What is the process of transcribing information from DNA to RNA called?

Transcription

Translation

Mutation

Replication

Why is transcription important for the cell?

It helps in cell division

It repairs damaged strands of DNA

It converts RNA into DNA

It turns DNA into a useable form - RNA

What are the two processes involved in protein synthesis?

Mutation and Transcription

Transcription and Replication

Transcription and Translation

Replication and Translation

Where does transcription occur in the cell?

Nucleus

Mitochondria

Cytoplasm

Ribosome

What molecule is made during transcription?

mRNA

DNA

rRNA

tRNA

During transcription, DNA serves as a template for what?

Making an RNA molecule

Replicating itself

Breaking down a protein

Creating a protein

What marks the beginning of transcription?

Initiation

Termination

Promoter

Elongation

What role does the RNA polymerase enzyme play in transcription?

Binds to the gene

Creates a complementary sequence of bases

Unwinds the DNA

Reads the bases in one of the DNA strands

What is the name of the region the enzyme binds to during Initiation?

Intron

Promoter

Terminator

Exon

What occurs when RNA polymerase bindings to the promoter region?

DNA replicates

DNA unwinds

DNA binds with mRNA

RNA detaches from the DNA strand

What is the process known as the addition of nucleotides to the mRNA strand?

Elongation

Transcription

Replication

Translation

Which enzyme is responsible for reading the unwound DNA strand and building the mRNA molecule?

DNA polymerase

Ligase

Helicase

RNA polymerase

During the process of elongation, an adenine (A) in DNA binds with which base in RNA?

Uracil (U)

Cytosine (C)

Thymine (T)

Guanine (G)

What happens during the process when the newly formed RNA is bound to the unwound DNA?

RNA splits into two

Protein is produced

mRNA molecule is built

DNA replication occurs

What signifies the end of transcription?

When RNA polymerase starts a new sequence

When DNA detaches from mRNA

When RNA polymerase crosses a stop sequence

When a start sequence is met

What is the function of the termination sequence in RNA transcription?

Signals the end of transcription

Binds mRNA to tRNA

Starts the transcription process

Replicates the DNA sequence

What happens to the mRNA strand after transcription?

It attaches to another DNA

It replicates itself

It detaches from DNA

It starts the transcription process anew

What is removed from mRNA during the process of splicing?

Introns

Nucleotides

Exons

Ribonucleoproteins

What does mRNA consist of after the splicing process?

Exons

Introns

Nucleotides

Ribonucleoproteins

What kind of proteins are involved in pre-mRNA splicing?

Introns

Exons

Ribonucleoproteins

Small nuclear ribonuclearproteins

What happens during the editing of mRNA?

No changes are made to the nucleotides.

All nucleotides are replaced.

Some nucleotides are changed.

Some nucleotides are removed.

What is the function of the human protein APOB?

It helps transport lipids in the blood.

It promotes muscle growth.

It aids digestion.

It accelerates energy production.

How does editing affect the APOB protein?

It diminishes the function of the protein.

It creates two different forms.

It increases the size of the protein.

It makes the protein inactive.

Why is one form of APOB protein smaller than the other?

Editing adds a premature stop signal in the mRNA.

The bigger form has additional nucleotides.

The smaller form is a premature version.

Editing removes some nucleotides.

What is the process of adding a 'tail' to the mRNA called?

Polycytidylylation

Polyadenylation

Polyribosylation

Polyguanylylation

What does the 'tail' of the mRNA consist of?

A string of Ts (thymine bases)

A string of Cs (cytosine bases)

A string of Gs (guanine bases)

A string of As (adenine bases)

What is one role of the 'tail' in mRNA?

It signals the middle of mRNA

It signals the end of mRNA

It signals a mutation in mRNA

It signals the start of mRNA

How does the 'tail' protect mRNA?

From antibodies that might attack it

From viruses that might infect it

From enzymes that might break it down

From mutagens that might alter it