AP Biology transcription translation
Study material covering key concepts of transcription and translation in AP Biology, including detailed processes, key terms, and essential functions.
Quiz(18 pytania)
1. What is the primary function of RNA polymerase?
Pojęcia w tym zestawie(28)
What is transcription?
The process of copying a segment of DNA into RNA.
What is translation?
The process of synthesizing proteins from mRNA.
True or false: mRNA is a type of RNA.
True, because mRNA carries the genetic code from DNA to ribosomes.
Difference between RNA and DNA.
RNA: single-stranded, contains ribose; DNA: double-stranded, contains deoxyribose.
What are ribosomes?
Cellular structures where protein synthesis occurs, composed of rRNA and proteins.
Fill in the blank: mRNA is synthesized during ______.
transcription.
What enzyme is involved in transcription?
RNA polymerase binds to DNA and synthesizes mRNA.
True or false: Translation occurs in the nucleus.
False, because translation occurs in the cytoplasm.
What are codons?
Three-nucleotide sequences in mRNA that correspond to specific amino acids.
What is a promoter?
A DNA sequence that initiates transcription by RNA polymerase.
What is the role of tRNA?
Transfer RNA transports amino acids to the ribosome during translation.
Difference between exons and introns.
Exons are coding regions; introns are non-coding regions spliced out during RNA processing.
What is a stop codon?
A codon that signals the end of protein synthesis (e.g., UAA, UAG, UGA).
Fill in the blank: The ______ carries the genetic code from the nucleus to the ribosome.
mRNA.
What is the start codon?
AUG, which codes for methionine and initiates translation.
True or false: Splicing occurs before translation.
True, because introns are removed from mRNA before it is translated.
What are transcription factors?
Proteins that help regulate the transcription of specific genes.
Fill in the blank: The ______ translates mRNA into a polypeptide chain.
ribosome.
What role does the ribosome's A site play?
It is where the new tRNA enters during translation.
What is polyadenylation?
The addition of a poly-A tail to the 3' end of mRNA, enhancing stability.
Difference between prokaryotic and eukaryotic transcription.
Prokaryotic: occurs in cytoplasm; eukaryotic: occurs in nucleus.
What is the significance of the 5' cap?
The 5' cap protects mRNA from degradation and aids in ribosome binding.
What is the central dogma of molecular biology?
DNA → RNA → Protein, describing the flow of genetic information.
What does the term 'gene expression' refer to?
The process by which information from a gene is used to synthesize a functional gene product.
Fill in the blank: The ______ assembles amino acids in the correct sequence during translation.
ribosome.
What is the role of aminoacyl-tRNA synthetase?
Enzyme that attaches the correct amino acid to its corresponding tRNA.
What are the three stages of translation?
Initiation, elongation, and termination.
What is a mutation?
A change in the DNA sequence that can affect protein synthesis.
Pytania w tym zestawie(18)
1. What is the primary function of RNA polymerase?
2. During which process is the genetic code converted into a protein?
3. Which of the following describes a promoter?
4. Which of the following is NOT involved in translation?
5. What is the purpose of the poly-A tail on mRNA?
6. Which site on the ribosome is responsible for holding the tRNA carrying the growing polypeptide chain?
7. Fill in the blank: The process of removing introns from pre-mRNA is called ______.
8. What is the effect of a mutation in a stop codon?
9. Which of the following best describes the function of tRNA?
10. Which codon is known as the start codon?
11. What is the role of transcription factors in gene expression?
12. Which site on the ribosome is where tRNA exits?
13. What is the purpose of the 5' cap on mRNA?
14. What type of RNA is primarily involved in carrying genetic information from DNA to the ribosome?
15. Which of the following processes occurs first during gene expression?
16. Fill in the blank: In eukaryotes, transcription occurs in the ______.
17. What is the relationship between an anticodon and a codon?
18. Which of the following is true regarding eukaryotic mRNA processing?
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