In comparison to DNA, how does the length of RNA typically vary?

B) RNA is the same length as DNA.

D) RNA varies in length depending on the organism.

What is the primary function of RNA in gene expression?

D) To carry out transcription and translation

A) To store genetic information

B) To provide a template for DNA replication

C) To transport amino acids to the ribosome

How does the presence of uracil (U) in RNA differ from thymine (T) in DNA?

D) Uracil is only found in RNA, while thymine is only found in DNA.

A) Uracil is a purine base, while thymine is a pyrimidine base.

B) Uracil forms hydrogen bonds with adenine, while thymine pairs with guanine.

C) Uracil is a ribose sugar, while thymine is a deoxyribose sugar.

In comparison to DNA, how does the structural difference of being single-stranded affect RNA's functions in gene expression?

B) It enables RNA to bind to proteins and catalyze reactions.

A) It allows RNA to form double helices with DNA.

C) It facilitates the formation of complementary base pairs during transcription.

D) It gives RNA the ability to bind to multiple ribosomes simultaneously.

What is the primary role of Messenger RNA (mRNA) in the cell?

C) To carry the code for protein synthesis

A) To store genetic information

B) To catalyze enzymatic reactions

Where does Messenger RNA (mRNA) transport the genetic code for protein synthesis from?

C) From the nucleus to the cytoplasm

A) From the ribosome to the cytoplasm

B) From the mitochondria to the nucleus

D) From the cytoplasm to the endoplasmic reticulum

In comparison to DNA, what is the structural difference between mRNA and DNA?

C) mRNA is single-stranded, while DNA is double-stranded.

A) mRNA is double-stranded, while DNA is single-stranded.

B) mRNA is composed of deoxyribose nucleotides, while DNA has ribose nucleotides.

D) mRNA contains uracil (U) instead of thymine (T).

How does the length of mRNA typically relate to the genetic information it carries?

C) mRNA is just long enough to contain one gene (about 1000 nucleotides).

A) mRNA is long and can contain multiple genes.

B) mRNA is the same length as DNA.

D) mRNA varies in length depending on the cell type.

What is the typical fate of mRNA after it serves its role in protein synthesis?

C) It is degraded and has a short lifetime.

A) It is permanently stored in the nucleus.

B) It is reused in future protein synthesis.

D) It is converted into ribosomal RNA (rRNA).

What is the function of the ribosome during protein synthesis?

D) It assembles amino acids into a polypeptide chain.

A) It stores genetic information.

B) It carries the mRNA to the cytoplasm.

C) It catalyzes the formation of mRNA.

How many genes can typically be found in a single mRNA molecule?

D) It varies depending on the cell type

What does mRNA transport from the nucleus to the cytoplasm?

A) Genetic code for protein synthesis

What is the function of the ribosome during protein synthesis?

D) It assembles amino acids into a polypeptide chain.

A) It stores genetic information.

B) It carries the mRNA to the cytoplasm.

C) It catalyzes the formation of mRNA.

How many genes can typically be found in a single mRNA molecule?

D) It varies depending on the cell type

What does mRNA transport from the nucleus to the cytoplasm?

A) Genetic code for protein synthesis

What is the main role of transfer RNA (tRNA) in the cell?

C) To match amino acids to their corresponding codons

A) To carry genetic information from the nucleus to the cytoplasm

B) To serve as a template for protein synthesis

D) To catalyze enzymatic reactions

How does the length of a typical tRNA molecule compare to that of mRNA?

A) tRNA is much longer than mRNA.

B) tRNA is about the same length as mRNA.

D) tRNA varies in length depending on the organism.

What is the role of the base sequence "ACC" found at one end of a tRNA molecule?

D) To catalyze protein synthesis

What is the purpose of the anticodon sequence on a tRNA molecule?

C) To complement the codon on mRNA

A) To carry genetic information

B) To determine the tRNA's length

What is the function of aminoacyl tRNA synthase enzymes?

B) To attach amino acids to tRNA molecules

A) To synthesize tRNA molecules

How does aminoacyl tRNA synthase ensure the specificity of tRNA-amino acid binding?

D) By specifically attaching each amino acid to the tRNA with the appropriate anticodon

A) By binding all amino acids to the same tRNA molecule

B) By using a single, universal tRNA molecule

C) By allowing random binding of amino acids to tRNA

What is the primary role of the anticodon on a tRNA molecule during protein synthesis?

B) To complement the mRNA codon

D) To store genetic information

How does tRNA play a role in the accuracy of protein synthesis?

C) By ensuring the correct amino acid is matched to the codon

B) By forming clover-leaf structures

D) By regulating the length of mRNA

What happens when the anticodon of a tRNA molecule complements a codon on mRNA during translation?

C) The tRNA delivers the matching amino acid.

A) The tRNA binds to ribosomes.

B) The ribosome catalyzes protein synthesis.

D) The mRNA is converted to DNA.

What is the role of tRNA in protein synthesis?

D) To deliver amino acids to the ribosome for protein assembly

C) To catalyze enzymatic reactions

RNA_1

Authored by Aishwaria Murthy

Biology

University

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In gene expression, what are the two main processes that occur after DNA replication?

A) Replication and recombination

B) Transcription and translation

C) Transcription and replication

D) Translation and replication

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What nucleic acid is involved in gene expression alongside DNA?

A) Deoxyribose nucleic acid

B) Ribonucleic acid

C) Adenosine triphosphate

D) Guanosine diphosphate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one key difference between RNA and DNA in their sugar component?

A) RNA has ribose nucleotides, while DNA has deoxyribose nucleotides.

B) RNA has deoxyribose nucleotides, while DNA has ribose nucleotides.

C) Both RNA and DNA have the same sugar component.

D) RNA has thymine in place of uracil.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the base that is unique to RNA and replaces thymine?

A) Adenine (A)

B) Uracil (U)

C) Cytosine (C)

D) Guanine (G)

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the four bases found in RNA?

A) Adenine, thymine, cytosine, guanine

B) Adenine, uracil, cytosine, guanine

C) Adenine, guanine, ribose, deoxyribose

D) Adenine, uracil, cytosine, thymine

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many strands are typically found in RNA?

A) Double-stranded

B) Triple-stranded

C) Single-stranded

D) Quadruple-stranded

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What unique property of RNA allows it to fold into three-dimensional structures?

A) The presence of uracil

B) The use of ribose nucleotides

C) Being single-stranded

D) The number of adenine bases

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RNA_1

In gene expression, what are the two main processes that occur after DNA replication?

What nucleic acid is involved in gene expression alongside DNA?

What is one key difference between RNA and DNA in their sugar component?

What is the base that is unique to RNA and replaces thymine?

What are the four bases found in RNA?

How many strands are typically found in RNA?

What unique property of RNA allows it to fold into three-dimensional structures?

In comparison to DNA, how does the length of RNA typically vary?

Which of the following is NOT a difference between RNA and DNA?

What is the primary function of RNA in gene expression?

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