Post transcriptional - Study guides, Class notes & Summaries

Key part of peptide / protein biosynthesis Correct Answer increase in gene expression of the cellular genes that encode for these proteins (hormones) Proteins & peptides might be ______ and/or ______ to generate their full biological activity Correct Answer glycosylated ; dimerized Proteins & peptides are (hydrophobic or hydrophilic)? Correct Answer hydrophilic - therefore can be stored in vesicles & won't diffuse through lipid membrane. Are peptides / proteins stored in vesicles or se...

CRISPR Based Genome Engineering Exam Questions With Verified Answers. What is CRISPR - answerThis is a technology that research scientists use to selectivelt modify the DNA of a living organism. CRISPR was adapted for use in the lab from natually occurnig genome editing systems which are found in bacteria. This technology allows for precise modifications to the genetic code, offering the potential to treat various medical conditions by editing genes responsible for certain diseases What i...

Test Bank - Biochemistry: Concepts and Connections, 2nd Edition (Appling, 2019) Chapter 1-26 | All Chapters. Table of Contents Biochemistry and the Language of Chemistry The Chemical Foundation of Life: Weak Interactions in an Aqueous Environment The Energetics of Life Nucleic Acids Introduction to Proteins: The Primary Level of Protein Structure The Three-Dimensional Structure of Proteins Protein Function and Evolution Enzymes: Biological Catalysts Carbohydrates: Sugars, Saccharides, Glycans Li...

USABO Open Exam 2024 | 100%Correct Answers Verified Latest 2024 Version. 1. Why is myelin important in the nervous system? A. It allows signals to travel faster along axons because depolarization occurs only at myelinated locations. B. It allows signals to travel faster along axons because depolarization occurs only at nonmyelinated locations. C. It bundles the dendrites of adjacent neurons together. D. It increases capacitance across the cell membrane, which helps electrical signals to le...

BIO 1A03 Midterm 2 Questions and Answers Graded A Prokaryotic growth and cell division -nutrient-rich environment -favorable temperatures Housekeeping genes -genes required at all times for normal function -all ways transcribed and translated -allow constant maintance for general cellular activity -e.g. structural protein of a cell, DNA and RNA polymerase, genes coding for ribosomal proteins -constitutive Regulated genes genes that can be turned on and off at a needed basis Francois Jacob and...

Test Bank - Biochemistry: Concepts and Connections, 2nd Edition (Appling, 2019) Chapter 1-26 | All Chapters. Table of Contents Biochemistry and the Language of Chemistry The Chemical Foundation of Life: Weak Interactions in an Aqueous Environment The Energetics of Life Nucleic Acids Introduction to Proteins: The Primary Level of Protein Structure The Three-Dimensional Structure of Proteins Protein Function and Evolution Enzymes: Biological Catalysts Carbohydrates: Sugars, Saccharides, Glycans Li...

USABO Open Exam 2024 | 100%Correct Answers Verified Latest 2024 Version. 1. Why is myelin important in the nervous system? A. It allows signals to travel faster along axons because depolarization occurs only at myelinated locations. B. It allows signals to travel faster along axons because depolarization occurs only at nonmyelinated locations. C. It bundles the dendrites of adjacent neurons together. D. It increases capacitance across the cell membrane, which helps electrical signals to le...

BIO 1A03 TEST 2 QUESTIONS AND ANSWERS ALREADY PASSED The lacZand lacY genes are transcribed when a) lactose is absent and glucose levels are high. b)lactose is present and glucose levels are low. c)lactose is present, regardless of the level of glucose in the cell. d) glucose levels are low, regardless of the level of lactose in the cell. b) The CRP-cAMP complex binds the lactose operon when a) glucose levels and cAMP levels are low. b) glucose levels are high and cAMP levels are low. c)...

In yeast, post-transcriptional modifications involve the addition of a 5' 7-MeG cap, a 3' PolyA tail, and excision of introns. What is not a function of these RNA processing steps? - correct answer--a. 5' 7-methyl guanosine cap facilitates attachment of ribosomes b. 3' polyA tail addition enhances transcription c. Protect the mRNA from degradation by ribonucleases d. Contribute to the stability of the mRNAs What does not promote the initiation of DNA replication in bacteria? - correct ...

What is Methylation? Ans: addition of methyl groups (CH3) to specific DNA nucleotides What performs methylation? Ans: DNA methyltransferases, add primarily to Cytosine bases What bases are primarily methylated? Ans: Cytosine - located in CpG dinucleotides What is a CpG dinucleotide? Ans: side by side Cytosine and Guanine nucleotides in same DNA strand What part of DNA is mostly methylated? Ans: In eukaryotic genomes, most methylated DNA is found in transposable elements and non-coding...