MiRNAs Study guides, Class notes & Summaries
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MSCI 505 Quiz 3: RNA Interference (Liberty university)
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Which of the following statements concerning translational repression 
from miRNAs are false? 
miRNA complexes can cause ribosomes to fall off mRNA prematurely. 
The removal of the polyA tail by miRNA complexes causes the 
mRNA to be digested by RiSC. 
The RiSC complex, when directed my miRNAs, can cause mRNA to 
become circular in structure which inhibits translation. 
miRNA directed RiSC complexes can bind to ribosomal subunits 
preventing the assembly of a functional ribosome (with large and ...
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2024 CPPS 303 - Lipids 5 ( Adipose Tissues in Metabolism and as an Endocrine Organ ) Pt. 2 Complete Questions & Answers (Solved) 100% Correct
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2024 CPPS 303 - Lipids 5 ( Adipose Tissues in Metabolism and as an 
Endocrine Organ ) Pt. 2 
Complete Questions & Answers (Solved) 100% Correct 
 
1. What do Adipocytes Secrete? (8) 
Answer: 
- Metabolites 
- Inflammatory Mediators 
- Novel Signalling Lipids 
- Circulating Exosomal miRNAs 
- Binding proteins/precursors 
- Peptides 
- Hormones 
- Growth Factors 
2. How do secreted products act on cells/organs? 
Answer: Both paracrine and endocrineaction 
3. Processes that Adipocytes regulate (4)...
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Cell Bio Practice Exam 2|32 Questions with Verified Answers,100% CORRECT
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Cell Bio Practice Exam 2|32 Questions with Verified Answers 
 
RNA in cells differs from DNA in that ___. - CORRECT ANSWER it is single-stranded and can fold up into a variety of structures 
 
Transcription is similar to DNA replication in that ___. - CORRECT ANSWER nucleotide polymerization occurs only in the 5′-to-3′ direction. 
 
Which of the following statements is FALSE? (a) A new RNA molecule can begin to be synthesized from a gene before the previous RNA molecule's synthesis is compl...
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2024 CPPS 303 - Adipose Tissue 2 Complete Questions & Answers (Solved) 100% Correct
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2024 CPPS 303 - Adipose Tissue 2 
Complete Questions & Answers (Solved) 100% Correct 
 
1. What do adipocytes and other cells in adipose tissue secrete? 
Answer: numerousproteins, lipids and nucleic acids 
2. What are adipokines? 
Answer: regulatory peptides 
3. What are lipokines? 
Answer: regulatory lipid species 
4. What processes do the proteins, lipids and nucleic acids secreted by adipocytes 
regulate or modulate? 
Answer: lipid and glucose homeostasis, energy balance, inflammation and tis...
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NR507 Midterm Test Questions with Complete Solutions
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NR507 Midterm Test Questions with Complete Solutions 
 
What is epigenetics? - ANSWER The study of heritable changes in gene expression or phenotype casued by mechanisms *other* than changes in DNA sequences. 
 
DNA methylation - ANSWER The attachment of a methyl group to a cytosine base is followed by a guanine base...causes a gene to become transcriptionally inactive or silent. 
 
Epigenetic processes play a major role in cancer initiation, progression, and treatmen...
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BIO 302 hw and practice Exam 2|30 Questions with Verified Answers,100% CORRECT
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BIO 302 hw and practice Exam 2|30 Questions with Verified Answers 
 
Which form of control directly influences which mRNAs are selected by ribosomes for the synthesis of proteins? 
 
a. mRNA degradation control 
b.mRNA processing and localization control 
c. Protein activity control 
d. Transcriptional control 
e. Translational control - CORRECT ANSWER translation control 
 
Transcription regulators usually bind where on a DNA double helix? 
 
a. 3' End 
b. 5' End 
c. Major groove 
d. Minor gr...
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MMSC 490 Exam 2 Questions and Answers All Correct
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MMSC 490 Exam 2 
Questions and Answers All 
Correct 
 
The genomes of salamanders contain ten times more DNA than the genomes of 
humans because salamanders - Answer-have more noncoding DNA than humans have. 
A gene can be defined as a segment of DNA that codes for - Answer-functional product. 
Introns in mRNA-coding genes are the transcribed sequences - Answer-between 
protein-coding sequences. 
In the nucleus, introns are removed from transcripts by - Answer-splicing 
introns can encode - Ans...
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BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST UPDATED 2024/2025 | 100% CORRECT
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What is the first mRNA processing step? - ANSWER 5' capping 
Different mRNAs are made from the same initial pre-mRNA by ________. - ANSWER 
alternative splicing 
RNA transcription begins at a ________. - ANSWER promoter 
________ protect(s) the pre-mRNA molecule. - ANSWER the 3' poly-a tail 
The process of pre-mRNA splicing removes ________. - ANSWER introns 
Spliced ________ differ in their exons. - ANSWER mRNAs 
Identify the three phases of transcription. - ANSWER initiation, elongation, 
te...
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FL 5 AAMC MCAT exam questions fully solved & verified for accuracy 2024
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What is the chemical structure of a component found in four of the five cofactors used by Na+-NQR? 
says it is composed of flavin 
structure is a nucleotide base 
structure B could be 
structure C also could be 
structure D is an amino acid 
down between B and C 
to help, look at the captioned note on the table. it says Fl represents flavin which is the redox active center in four of the five cofactors of Na+-NQR 
C has an uniquinone AND HERE IS IS MENTIONED THAT UNIQUINONE IS IS A SUBSTATE 
 
 ...
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Bio 315- Exam 1 Questions & Answers, Already Passed!!
- Exam (elaborations) • 11 pages • 2024
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From the list below, select the one cellular structure or compartment that is not found in animal 
cells: 
A. Plasmodesmata 
B. Golgi apparatus 
C. Endoplasmic Reticulum 
D. Plasma membrane - Answer-A 
The most reliable feature distinguishing a eukaryotic cell from prokaryotic cell is the: 
A. Presence of plasma membrane 
B. Presence of a nucleus 
C. Eukaryotic cells larger size 
D. Presence of DNA - Answer-B 
Noncovalent bonds are too weak to influence the 3D structure of macromolecules, such a...
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