1. Define the steps of gene expression. Be sure to specifically speak to the following: (USLO5.1)
DNA Replication
Transcription
Translation
2. Discuss vertical versus horizontal transmission.
# Gene expression is the process by which the genetic code - the nucleotide sequence - of a gene is used to direct protein synthesis and produce the structures of the cell. Genes that code for amino acid sequences are known as 'structural genes'.
The process of gene expression involves two main stages:
Transcription: the production of messenger RNA (mRNA) by the enzyme RNA polymerase, and the processing of the resulting mRNA molecule.
Translation: the use of mRNA to direct protein synthesis, and the subsequent post-translational processing of the protein molecule.
The 9 steps of gene expression :-
chromosome changes
- DNA unpacking
control of transcription
- regulatory proteins and control sequences
control of RNA processing
- addition of cap and tail
splicing
flow through nuclear envelope
breakdown of mRNa
control of translation
control after translation
- cleavage/modification/activation of proteins
breakdown of protein
#
2. Horizontal gene transfer (HGT) or lateral gene transfer (LGT) is the movement of genetic material between unicellular and/or multicellular organisms other than by the ("vertical") transmission of DNA from parent to offspring (reproduction) .
1. Define the steps of gene expression. Be sure to specifically speak to the following: (USLO5.1)...
1. Define the steps of gene expression. Be sure to specifically speak to the following: (USL05.1) DNA Replication Transcription Translation
E: For each of the following, indicate whether they regulate eukaryotic gene expression at the transcription level (prior to or during transcription), at the translation level(after transcription/formation of the immature mRNA molecule), or both. 1. Addition of the signal-recognition particle (SRP) 2. DNA methylation 3. Enhancers or insulators
The main differences in gene expression between prokaryotes and eukaryotes result from the presence of a nucleus in eukaryotes. Which of the following is FALSE when comparing transcription between prokaryotes and eukaryotes? Prokaryotic mRNA goes through multiple modifications before translation Eukaryotic genes have introns that need to be removed before translation Prokaryotic mRNA can be translated while it is still being transcribed Eukaryotic mRNA needs a 'cap and a 3'tall to prevent its degradation 0/2 pts Question 45 Lets play...
3. Prokaryotic and eukaryotic gene expression compared. Below is an incomplete table of prokaryotic and eukaryotic gene expression in comparison. Fill in the blank using PPT slides, notes and the textbook. Prokaryotic gene expression Eukaryotic gene expression Overview Steps Transcription and translation Yes Transcription and translation coupled? Gene structure No introns Epigenetic modification (chromosome remodeling) transcription, translation, RNA processing, protein processing Transcription in the nucleus and translation in the cytoplasm Interrupted gene with exons and introns RNAPI, II, III Which...
Q1)Which of the following is not involved in control of gene expression in eukaryotes? A. Change to DNA sequence. B. Alternative splicing. C. Export of mRNA from the nucleus. D. Transcriptional repression. E. Destruction of mRNA Q2) Trans-acting regulators of gene expression include? A. promoters. B. histone deacetylases C. introns D. silencers E. the TATA box. Q3) Gene regulation in eukaryotes often involves which of the following, which are not also used by prokaryotes? A.RNA polymerase B.Transcription factors C.Histone modification...
Question 19 (1 point) Which of the following steps is not associated with protein synthesis? a) Initiation b) Transcription c) Replication d) Translation Question 20 (1 point) A nucleic acid is a) DNA or RNA. b) a base pair. c) a nucleotide.
E: For each of the following, indicate whether they regulate eukaryotic gene expression at the transcription level (prior to or during transcription), at the translation level (after transcription/formation of the immature mRNA molecule), or both. 1. Alternative splicing 2. Chromatin remodeling 3. RNAi 12pt v Paragraph Β Ι Ο Α ev T²w ...
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Complementary base-pairing is important in processes involving DNA and RNA, including gene expression. Describe the steps during prokaryotic translation where complementary base-pairing of RNA to RNA is essential to translation. Be sure to include what molecules are complementary, and how this base-pairing contributes to translation. T T T Arial 3 (12pt) T.E.E. 3. 25
the DNA will likely become less condensed, ana gene expression wil inr 8 pt D Question 6 Place the following steps of eukaryotic transcription in order, from first (1) to last (4): Hint: n e video . Textbook chapter 16 section 16.4 Binding of TFIID to the TATA box RNA Pol li binds to the promoter I Choose ) RNA Pol Il is phosphorylated I Choose ] RNA Pol ll begins transcription I Choose l D | Question 7 8...
1.4. In linear eukaryotic DNA, the replication of DNA ends is carried out by a) DNA Poll b) DNA Pol III c) Telomerase d) DNA Gyrase 1.5. Based on what we know regarding gene expression, which of the following basic mechanisms of gene expression is most logical? a) DNA → RN → protein b) DNA → MRNA → protein c) mRNA → DNA → rRNA → protein d) DNA → cell [TURN OVER] 1.6. Which of the following processes does...