Synthese De protien

Question 1

What does RNA stand for?

Answer 1

Ribonucleic acid

Question 2

True or False: RNA is a double-stranded molecule.

Answer 2

False

Question 3

Fill in the blank: RNA is composed of nucleotides, which include a ribose sugar, a phosphate group, and a _______.

Answer 3

nitrogenous base

Question 4

What are the four nitrogenous bases found in RNA?

Answer 4

Adenine, Uracil, Cytosine, Guanine

Question 5

Which nitrogenous base is present in RNA but not in DNA?

Answer 5

Uracil

Question 6

What is the primary function of messenger RNA (mRNA)?

Answer 6

To carry genetic information from DNA to the ribosome for protein synthesis.

Question 7

True or False: Transfer RNA (tRNA) is responsible for bringing amino acids to the ribosome during protein synthesis.

Answer 7

True

Question 8

What is the role of ribosomal RNA (rRNA)?

Answer 8

To form the core of the ribosome’s structure and catalyze protein synthesis.

Question 9

What is the process by which RNA is synthesized from a DNA template called?

Answer 9

Transcription

Question 10

What is the enzyme responsible for synthesizing RNA during transcription?

Answer 10

RNA polymerase

Question 11

In which part of the cell does transcription occur?

Answer 11

Nucleus

Question 12

What is the term for the sequence of three nucleotides in mRNA that specifies an amino acid?

Answer 12

Codon

Question 13

How many codons are there in the genetic code?

Answer 13

64

Question 14

True or False: All codons code for amino acids.

Answer 14

False

Question 15

What is the function of a stop codon?

Answer 15

To signal the termination of protein synthesis.

Question 16

What type of RNA is involved in the process of splicing?

Answer 16

Small nuclear RNA (snRNA)

Question 17

Which type of RNA carries the genetic code from DNA to the ribosome?

Answer 17

mRNA

Question 18

Fill in the blank: The process of translating mRNA into a protein is called _______.

Answer 18

Translation

Question 19

What is the role of the ribosome in protein synthesis?

Answer 19

To facilitate the assembly of amino acids into a polypeptide chain.

Question 20

True or False: RNA can have enzymatic activity.

Answer 20

True

Question 21

What is the significance of RNA interference (RNAi)?

Answer 21

It is a biological process in which RNA molecules inhibit gene expression or translation.

Question 22

What is a primary transcript?

Answer 22

The initial RNA transcript synthesized from the DNA template before processing.

Question 23

What modification occurs to mRNA before it exits the nucleus?

Answer 23

Capping and polyadenylation

Question 24

What is the difference between prokaryotic and eukaryotic RNA processing?

Answer 24

Eukaryotic RNA undergoes capping, polyadenylation, and splicing, while prokaryotic RNA does not.

Question 25

What are non-coding RNAs?

Answer 25

RNA molecules that do not encode proteins but have various regulatory and structural roles.

Question 26

True or False: All RNA molecules are translated into proteins.

Answer 26

False

Question 27

Sy