Correctly identify the three steps required in DNA translation? a) Initiation, e
ID: 77860 • Letter: C
Question
Correctly identify the three steps required in DNA translation? a) Initiation, elongation and termination b) Initiation, replication and termination c) Initiation, synthesis and termination d) Initiation, synthesis and elongation Unlike DNA - the structure of RNA a) Is single strand b) Is longer c) Contains 5 nitrogenous bases Which of the following enzyme unzips the DNA during replication? a) DNA polymerase b) RNA polymerase c) DNA helicase d) Ligase To complete the process of transcription and translation an animal cell would need to make some room in ____ and ____ respectively. a) Cytoplasm and Sooth Endoplasmic Reticulum b) Cytoplasm and nucleus c) Nucleus and cytoplasm d) Smooth Endoplasmic Reticulum and cytoplasm Mutations can cause genetic disorders and/or cancers. These mutations are known as a) Change is the nucleotide sequence of DNA b) Change in the nucleotide sequence of RNA c) Change is the nucleotide sequence of DNA and RNA d) Change just pure bad luck Which component is not directly involved in translation? a) mRNA b) DNA c) tRNA d) Ribosomes e) GTPExplanation / Answer
Ans. #1. Correct option. A
DNA replication consists of three sequential steps namely Initiation, Elongation and Termination.
#2. Correct option. A
RNA is single stranded whereas DNA is double stranded.
RNA also has only 4 nitrogenous bases- A, C, U and G.
RNA is transcribed from a gene (an extremely small portion of the whole genome that yields functional product upon transcription/translation). So, RNA is usually smaller than DNA (genomic DNA).
#3. Correct option C.
DNA helicase unwinds ds DNA into single strands.
DNA pol and RNA polymerase synthesize DNA and RNA, respectively.
Ligase joins two DNA fragments.
#4. Correct option. C
Transcription takes place in nucleus. Translation occurs in cytoplasm.
#5. Correct option A.
Change in nucleotide sequence of DNA is called mutation.
#6. Correct option. B
DNA is not directly involved in translation of mRNA into proteins.