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BIL150 Mallery Exam 4 || ALREADY GRADED A+

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The two polynucleotide chains in DNA are held together primarily by H bonds between A and U as well as between G and T? a. True b. False correct answers B (DNA does not have Uracil, it has Cytosine) If there is 12% of A in a DNA molecule, then the % of G must be? a. 12% b. 30% c. 368...

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  • October 9, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • the two polynucleotide chains in dna are held toge

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  • BIL150
  • BIL150

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BIL150 Mallery Exam 4 || ALREADY GRADED A+
The two polynucleotide chains in DNA are held together primarily by H bonds between A
and U as well as between G and T?

a. True
b. False correct answers B

(DNA does not have Uracil, it has Cytosine)

If there is 12% of A in a DNA molecule, then the % of G must be?

a. 12%
b. 30%
c. 368
d. 76%
e. none of these are correct correct answers E

(A=T and C=G, A+G/T+C=1)

The catalytic molecule responsible for making a peptide bond during translation (protein
synthesis) in cells is?

a. amino synthase
b. ribozyme
c. release factor
d. plasmid
e. none of these correct answers B

Which of the following biotechnology procedures would one use to specifically edit a known
sequence of DNA in a genome?

a. polymerase chain reaction
b. restriction endonuclease
c. CRISPR-Cas9
d. reverse transcriptase
e. none of these is correct correct answers C

The genetic code?

a. is redundant
b. is universal
c. exhibits 'wobble'
d. is a triplet codon
e. all of the above correct answers E

The number of human protein genes is closest to which of the following numbers?

a. 100,000
b. 3,000,000

, c. 20,687
d. 40% of all human DNA
e. none of these correct answers C

Which of the following processes is NOT part of the Central Dogma?

a. transcription
b. translation
c. synapsis
d. replication
e. all of these correct answers C

(Central Dogma: Replication, Transcription, Translation)

The enzyme that opens/untwists DNA to allow for it replication by DNA polymerase is?

a. topisomerase
b. helicase
c. primase
d. DNA ligase
e. binding proteins correct answers B

(Topoisomerase = removes supercoils, Primase = RNA polymerase, DNA ligase = seals 3'
open holes, Binding proteins = stabilize replication fork)

Which of the following enzymes of DNA replication is actually an RNA polymerase?

a. topisomerase
b. helicase
c. primase
d. DNA ligase
e. DNA polymerase II correct answers C

(Primase = RNA polymerase, makes RNA primer terminus)

Which of the following product molecules of transcriptions is cut up to produce mRNA?

a. ribsomal RNA
b. the primary transcript
c. transfer RNA
d. micro RNA
e. none of these correct answers B

(Primary transcript = mRNA, introns splice out to make 3 pieces)

(Hershey-Chase experiment, labeled genetic molecules in bacteriophages)
What molecules were labeled with 32P?

a. proteins
b. DNA

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