Helicase - Samenvattingen, Aantekeningen en Examens
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Technologist in Molecular Biology, MB(ASCP) board exam prep 2024 with 100% Correct Answers
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Technologist in Molecular Biology, MB(ASCP) 
board exam prep 2024 with 100% Correct 
Answers 
Pyrimidine - Answer ️️ -One carbon ring 
Cytosine, Thymine, Uracil 
What is the function of mRNA? - Answer ️️ -Carries genetic info out of nucleus 
Transcript translated to protein 
What is the function of tRNA? - Answer ️️ -Carries aa to ribosome 
Anticodon pairs with codon on mRNA strand 
What is the function of rRNA? - Answer ️️ -part of ribosome structure 
most abundant RNA 
coordina...
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Edexcel A Level Biology Paper 1 Mark Scheme June 2023 (Salters Nuffield)
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uestion 
Number 
Answer Mark 
1(a) The only correct answer is C a place where an organism lives 
A is incorrect because a group of organisms of different species living in the same area is a 
community 
B is incorrect because a group of organisms of the same species living in the same area is a 
population 
D is incorrect because the role of an organism is its niche 
(1) 
Question 
Number 
Answer Additional guidance Mark 
1(b)(i) A description that makes reference to three of the following 
• ...
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IB Biology Paper 2 Section B Questions and Answers Already Passed
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IB Biology Paper 2 Section B Questions 
and Answers Already Passed 
Draw a labelled diagram of the human adult male reproductive system. [5 marks] a. scrotum 
- shown around testes; 
b. testes/testis/testicles - shown inside scrotum; 
c. epididymis - shown adjacent to testis and connected to sperm duct; 
d. sperm duct/vas deferens - double line connecting testis/epididymis to urethra; e. seminal 
vesicle - sac shown branched off sperm duct (not off the urethra); 
f. prostate gland - shown positi...
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ASU BIO 181 Exam 2 (modules 7-12) Questions & Answers 2024
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ASU BIO 181 Exam 2 (modules 7-12) Questions & Answers 2024 
 
 
Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that is different in RNA. - ANSWER-... 
 
Which enzyme unwraps the double helix? - ANSWER-Helicase 
 
Which enzyme is used first to permit DNA polymerase III to begin replicating the 3' strand? - ANSWER-Primase 
 
The double helix of DNA is wrapped around 1 3/4 times around which of these components? - ANSWER-Nucleosome 
 
In the lagging...
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AP BIOLOGY EXAM PRACTICE
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Section I (Multiple-Choice Questions) 
Time: 80 minutes 
100 questions 
 
Directions: Each of the following questions or statements is followed by five possible answers or sentence completions. Choose the one best answer or sentence completion. 
 
 
1.	In which of the following are the nuclear activities most opposite? 
A.	prophase and metaphase 
B.	prophase and anaphase 
C.	prophase and telophase 
D.	metaphase and anaphase 
E.	metaphase and telophase 
 
2.	A severe storm forms a new river that...
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ASU BIO 181: EXAM 2 Questions with 100% correct Answers
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Which strand is produced more rapidly? - ANSWER-Leading strand 
 
During DNA replication in the lagging strand there is production of this component? - ANSWER-Okazaki fragment 
 
How many "stop" codons exist? - ANSWER-3 
 
The double helix of DNA is wrapped about 1¾ times around which of these components? - ANSWER-Nucleosome 
 
Which enzyme unwraps the double helix? - ANSWER-Helicase 
 
In the ribosome, what is the name of the bond that links one amino acid to the next? - ANSWER-peptide bonds...
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BIOC 385 Modules 10-12 || with 100% Correct Answers.
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Why do helicase and gyrase need to work together? correct answers Helicase unwinds DNA and gyrase relieves the torsional strain. 
 
Match the name of the DNA repair mechanism with the correct description. 
 
Functions with DNA replication to remove incorrect nucleotides from the nascent strand. 
 
Requires an endonuclease to remove an abasic nucleotide before DNA Pol I can replace a portion of the strand. 
 
Is needed to repair chemical damage in DNA effecting more than one nucleotide, such as c...
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Honors Biology EOC (Units 1-5) with Complete Solutions
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Honors Biology EOC (Units 1-5) with 
 
Complete Solutions 
 
What is the role of DNA helicase in DNA replication? 
 DNA helicase unwinds the DNA double helix, allowing the strands to be copied. 
 
How does the endosymbiotic theory explain the origin of mitochondria? 
 The endosymbiotic theory suggests that mitochondria originated from free-living 
prokaryotic cells that were engulfed by a host cell. 
 
Why are hydrogen bonds important in the structure of water? 
 Hydrogen bonds give water its un...
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AQA A Level Biology- Model Answers Questions & Answers(graded a+)
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DNA Replication - ANSWERDNA helicase breaks hydrogen bonds. Each strand acts as a template. Free nucleotides attach. Complementary base pairing occurs- AT and CG. DNA polymerase joins nucleotides. Hydrogen bonds reform. Semi-conservative replication- new DNA molecule contains one old and one new strand 
 
Transcription - ANSWERDNA helicase breaks hydrogen bonds between DNA strands. One strand acts as a template. RNA nucleotides attract to exposed complementary bases on DNA. RNA polymerase joins ...
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Biochemistry ACS Exam Questions and Answers
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Helicase 
Ans- Catalyzes ATP-dependent unwinding of DNA double helices 
What is the helicase in E. Coli? 
Ans- DNAB 
Single-Stranded Binding Protein 
Ans- Binds to unwound strands of DNA to prevent reannealing 
DNA Polymerase 
Ans- Enzyme responsible for DNA replication 
Uses ssDNA as a template and makes a complimentary strand by polymerizing 
deoxynucleotides 
Synthesis in 5' to 3' direction 
List the DNA polymerases in E. Coli 
Ans- Pol I, II, III 
DNA pol I 
Ans- Removes RNA primers and f...
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