Transcription and translation flashcards
Understanding transcription and translation is key to genetics. These flashcards cover essential terms and concepts in molecular biology.
Quiz(14 domande)
1. Which process converts DNA into RNA?
Termini in questo set(17)
What is transcription?
The process of copying a segment of DNA into RNA. Occurs in the nucleus.
What is translation?
The process where ribosomes create proteins from mRNA. Takes place in the cytoplasm.
True or false: mRNA is a type of DNA.
False, because mRNA (messenger RNA) is a copy of DNA used in protein synthesis.
Difference between DNA and RNA
DNA is double-stranded; RNA is single-stranded. DNA has thymine; RNA has uracil.
Fill in the blank: The enzyme that synthesizes RNA is called ___ .
RNA polymerase.
What is a codon?
A sequence of three nucleotides on mRNA that codes for a specific amino acid.
What is the role of ribosomes?
Ribosomes read mRNA sequences and assemble amino acids into proteins.
True or false: tRNA carries amino acids to ribosomes.
True, because tRNA (transfer RNA) transports the correct amino acids during translation.
What does mRNA stand for?
Messenger RNA, which carries genetic information from DNA to ribosomes.
What is a promoter?
A DNA sequence that initiates transcription. It's where RNA polymerase binds.
Difference between introns and exons
Introns are non-coding regions; exons are coding regions in mRNA.
True or false: Transcription happens in the cytoplasm.
False, because transcription occurs in the nucleus.
What is an anticodon?
A sequence of three nucleotides on tRNA that pairs with a codon on mRNA.
Fill in the blank: The genetic code is ___ for amino acids.
Universal.
What is splicing?
The process of removing introns from pre-mRNA to produce mature mRNA.
What type of bond forms between amino acids?
Peptide bonds.
What is the start codon?
AUG, which codes for methionine and signals the beginning of translation.
Domande in questo set(14)
1. Which process converts DNA into RNA?
2. Which of these is NOT involved in translation?
3. What do ribosomes do during translation?
4. What is the function of tRNA?
5. Which sequence is a stop codon?
6. In which part of the cell does transcription take place?
7. How many nucleotides make a codon?
8. What is the role of RNA polymerase?
9. Which of these statements is true?
10. What happens during splicing?
11. Which molecule is responsible for the genetic code?
12. What is the purpose of the promoter region?
13. Which is a function of ribosomal RNA (rRNA)?
14. Which amino acid does the start codon code for?
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