BIOL 110 Study Guide - Midterm Guide: Dna Supercoil, Rna Splicing, Messenger Rna
1.A DNA molecule is constructed of____ A: A SINGLE STRAND OF NUCLEOTIDES.
2.The central dogma of molecular biology states that information flows in which direction?__A: DNA-RNA-PROTEIN
3.Which type of mutation is the result of the redundant genetic code?__D- SILENT MUTATION
4.TorF:All transcription factors repress transcription. -FALSE
5.Which of following represent an accurate difference between RNA and DNA?__D-All of the above
6.RNA polymerase initially binds to which to which region of DNA?__C-THE PROMOTER
7.Whose work contributed to solving the structure of DNA?__D-ALL OF THE ABOVE
8.TorF:A new strand of DNA is synthesized in the ’ to ’ direction__FALSE
9.During mRNA modification, which is added to the ’end of the pre-mRNA molecule?__C-A POLY-A TAIL
10. Which of following helps to stabilize and hold the DNA strands apart while they are being replicated?__
A-SINGLE-STRAND BINDING PROTEIN
11. Which of following is a function of the protein called ubiquitin?__A-IS ATTACHES TO PROTEIN THAT ARE
MARKED FOR DESTRUCTION IN THE CELL.
12.The mismatch repair system function to repair____B-DAMAGED OR DISTORTED DNA CAUSED EXTERNAL FACTOR
13.Oneend of tRNA molecules includes an anticodon.What is bound to the opposite end?__B-AN AMINO ACID
14.In a eukayotic cell, which of the following processes take place in the nucleus?__B-TRANSCR AND TRANSLATION
15.The enzyme that uses a DNA template to create an RNA molecule is____D-RNA POLYMERASE
16. DNA replication is semiconservative. This means____A-EACH DOUGHTER MOLECULE HAS ONE OLD STRAND AND
ONE NEWLY MADE STRAND OF DNA
17.The leading and lagging strands of DNA that are formed during DNA replication differ in that__C- THE LEADING
STRAND IS SYNTHESIZED IN THE SAME DIRECTION AS THE EXPENDING REPLICATION FORK, LAGGING OPPOSITE
18.The enzyme that relaxes DNA supercoiling by producing breaks in the DNA is__B-TOPOISOMERASE
19.Transcription is the synthesis of___C-RNA FROM AN DNA TEMPLATE
20.which of the following is not a functional product of a gene?__A-a MESSENGER RNA(mRNA)
.TorF:During RNA splicing, exons are recognized and removed, and the introns are joined together…- FALSE
22.The most commonly occurring mutation in people with cystic fibrosis is a dele..-A PROTEIN MISSING AMINO ACID
23.Which of the following does not directly participate in translation?-B-DNA
25.Which of the following is incorrectly described?__A-rRNA MOLECULES USE A DNA TEMPLATE TO MAKE RNA
26.Translation is the synthesis of___A- a POLYPEPTIDE FROM AN RNA TEMPLATE
27. A gene is best defined as____C-SEGMENT OF DNA THAT ENCODES A FUNCTIONAL PRODUCT
28.Prior to dna replication, Which of following enzymes separetes the dna strand?__A-DNA POLYMERASE
29.DNA replication begins at specific location on the DNA called___A-ORIGINS OF REPLICATION
30.the enzymes that synthesizes a complementary strand of DNA from a DNA template is__D-DNA POLYMERASE
31. Which of following is not a component of a nucleotide?__ C-AMINO ACID
32. Which of following mutations would likely have the most severe impact on the..C-SINGLE NUCLEOTIDE INSERTI.
33.TorF: All polypeptides begin with methionine?__TRUE
.Which tRNA molecule below carries the appropriate anticodon for the codon GUG__A—ACA
35. Which of following is not a product of transcription?__B-A NEW STRAND OF DNA
36. The DNA backbone consist of _____A—DEOXYRIBOSE AND PHOSPHATE
37.MicroRNAs (miRNAs)may___C-BIND TO mRNAs AND BLOCK TRANSLATION
38.Why do the different cells within a multicellular organism have district appearance and fuction?__
A-EACH CELL WITHIN THE ORGANISM HAS ITS OWN UNIQUE GENOME
39. Which of following statements correctly describe alternative RNA splicing?__
C—IT CAN ALLOW THE PRODUCTION OF SIMILAR PROTEINS OF DIFFERENT SIZES AND.. FROM A SINGLE mRNA
40. Which of following factors might determine which genes will be expressed in cell?A-LEVELS OF ATP WITHI.CELL
41.The process of controlling which genes in cells DNA are called__B-GENE REGULATION
42.The enzyme that seals/repairs the gaps in DNA backbone___A-LIGASE
43.(rasm)which type of mutation led to the protein change below?__D—MISSENSE MUTATION
44.(rasm)which type of mutation happen below?__C—NONSENSE MUTATION(rezko tuxtab qolsa)
.double stranded DNA ’A C T A G T C G A C G ’
’T G A T C A G C T G C ’
46.RNA molecule. DNA:C T A C C A G C G T A T T C
RNA:G A U G G U C G C A U A A G
7.translate: ’-UCA AUG UCA CCC GUG GGU CAU UAG AGUC-’
start ser pro val gly his stop
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Document Summary
1. a dna molecule is constructed of____ a: a single strand of nucleotides. 2. the central dogma of molecular biology states that information flows in which direction?__a: dna-rna-protein. 3. which type of mutation is the result of the redundant genetic code?__d- silent mutation. 5. which of following represent an accurate difference between rna and dna?__d-all of the above. 6. rna polymerase initially binds to which to which region of dna?__c-the promoter. 7. whose work contributed to solving the structure of dna?__d-all of the above. 8. torf:a new strand of dna is synthesized in the (cid:885)" to (cid:887)" direction__false. 9. during mrna modification, which is added to the (cid:885)"end of the pre-mrna molecule?__c-a poly-a tail: which of following helps to stabilize and hold the dna strands apart while they are being replicated?__ A-single-strand binding protein: which of following is a function of the protein called ubiquitin?__a-is attaches to protein that are. 12. the mismatch repair system function to repair____b-damaged or distorted dna caused external factor.
