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Genetics Exam 3 Practice Test 50 Questions with Verified Answers Gene conversion results from A. Discontinuous replication B. Photoreactivation C. Mismatch repair D. Gap Repair E. C and D - CORRECT ANSWER E. C and D The picture below is two Holliday junctions in a pair of DNA molecules undergoing recombination Breakage and rejoining of the strands indicated by the arrows () and () results in crossover. A. 1 and 2 B. 2 and 3 C. 3 and 4 - CORRECT ANSWER B. 2 and 3 In eukaryoti...

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...

GCD Exam 2 Practice Test Comp 86 Questions (chp 9-13) with Verified Answers Which of the following could be the components of a single nucleotide found in DNA? a. Ribose, phosphate, and cytosine b. Deoxyribose, phosphate, and uracil c. Deoxyribose, phosphate, and adenine d. Ribose, phosphate, and uracil - CORRECT ANSWER c. Deoxyribose, phosphate, and adenine 2. Which of the following is NOT a feature of the DNA double helix? a. It obeys the AG/TC rule. b. There are 10 nucleotides...

replications - make DNA from DNA template - DNA Polymerase adds DNA nucleotides to free 3' end - Occurs in nucleus for eukaryotes leading strand - synthesized continuously - initially needs an RNA Primer Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen lagging strand - synthesized in short sections called Okasaki Fragments (5' RNA and 3' DNA) - Problems (due to lack of free 3' end) 1. Primase ...

Two sources of variability that arises during meiosis and fertilizations - 1. Crossing over 2. Independent Assortment Crossing Over - homologous chromosomes pair... each sister chromatid consists of a single stranded DNA molecule What is the result of the crossing over between homologous chromatids? - The exchange of segments Where do the homologous chromosomes separate? - First meiotic division What is produced after meiosis II - two daughter chromosomes have parental combinations of al...

BISC 440 cell and molec exam 2 questions and answers graded A+ Elongation factors check the accuracy of codon-anticodon pairing and increase the rate of translation RNA polymerase II requires general transcription factors to help position it correctly at the promoter Polyribosomes (complexes of two or more ribosomes) can be seen in the electron microscope. What is holding the ribosomes together? mRNA In eukaryotes, but not prokaryotes, ribosomes find the start site of tr...

ASCP Molecular Biology Exam Prep Questions and Answers 100% correct Pyrimidine one carbon ring Cytosine, Thymine, Uracil Purine two carbon rings Adenine, Guanine How are nucleotides joined together? condensation What does mRNA do? carries code out of cell. code for protein structure. DNA to ribosomes end of transcription start of translation What does tRNA do? decodes mRNA. Matches amino acids to mRNA code. Protein synthesis What does rRNA do? part ...

UCI Bio 93 with the Trio Final Review Exam Questions With 100% Correct Answers 2024 Bioengernetics - answerHow energy flows through organisms. ATP - answerUsed for mechanical, transport, and chemical work. ATP is also an RNA nucleotide. Mechanical Work - answerEnergy used in motor proteins and muscle cells during contractions. Transport Work - answerEnergy used to move substances against their gradient. Chemical Work - answerEnergy used to convey polymers into monomers. Gibs Free Energy...

Storage of DNA info Correct Answer: -in the sequence of bases -5' to 3' -chromosomes= 51 million to 245 million base pairs -information in DNA used for replication of chromosomes, production of proteins and regulation -average gene = 1400 bp The central dogma Correct Answer: replication DNA → RNA → protein (transcription and translation replication only occurs when the cell needs to divide, not when it needs to encode a message Nucleus: replication, transcription Cytosol: trans...

BIO Exam 4 Practice Test 174 Questions with Verified Answers The term polycistronic mRNA means: A.There is more than one mRNA strand produced during each round of transcription. B.There are multiple promotors to initiate transcription of this RNA. C.There are multiple operators for transcription of this RNA. D. There are multiple open reading frames in the mRNA produced. - CORRECT ANSWER D Please choose the true statement: A. During replication, the DNA leading strand is polymerized i...