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Practice questions for A1

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My exam question prep notes include carefully selected example questions along with detailed answers to help you prepare effectively. Each question is designed to cover key topics from your course, giving you a clear idea of what to expect in exams. The answers are well-structured, explaining conce...

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  • January 1, 2025
  • 5
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers
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juliettecawood
Test Q 's
Multiple choice




Combination and
deoxyribose nitrogenous base
1
.

of

↳ nucleoside




Nitrogenous base pentose phosphate
+
2. +
sugar group

↳ nucleotide




3. 2 nucleotides
joined by a
phosphate group linking the 2
sugars


nucleotide

poly



identical would
4. 2 DNA 's w/ length →
what Tm be ?



would
↳ DNA w/ high AT content melt
faster




5. DNA pot 111 adds nucleotides to the




'
end the RNA primer
↳ 3
of




b. Obs made
griffiths
↳ mouse died when
injected w/ combination
of heat killed virulent 111s and
living avirulent HIR




7 General consensus in proharotic DNA where RNA
polymerase often binds is
.


sequence

↳ TATAAT




E. Coli
8. terms
accuratly reflect of replication of chromosome

nature




↳ bidirectional and fixed pt of . initiation




9 . Proteins or enzymes that do NOT function at origin of replication in E. Coli



↳ DNA
ligase




'

Terms
'
10 .



relating to split genes


↳ introns and extrons




11 . Complexes formed when primary RNA transcripts bind to proteins

↳ hn RNP 's




12 . Describes DNA


( Att ) ( Atb )
↳ double stranded ,
anti -
parallel ,
= variable ,
=
,

( Ctc ) ( CTT )




12 .
Which subunit of prokaryotic RNA
polymerase plays regulatory function during the initiation
of
RNA transcription



↳ 6




13 .
Primary structure of a protein is a . . .




↳ amino acid
sequence




14 DNA replicated would
.


conservatively , after 2
generations there be . . .




↳ I old band & 1 new band




15 . All known bacterial DNA polymerases


have polymerization activity
'
↳ 5 to 3 '




activity
' '
↳ 3 to 5 exonuclease

, 16 .
Role of Dna A protein in bacterial DNA replication is to




↳ unwind double helix




17 .
Okasaki fragments are a
consequence of


↳ inability of DNA polymerase to polymerise in 3' to 5
'
direction




18 .
Griffith's experiment showed that . . .




cells introduce trait
↳ a Chem . component of a new




19 . NOT consistent w/ Charagaff 's findings

↳ ( ( + G) =
( A -1T )

( NOT TRUE . - . CTG =/ A -1T )




20 .
Rate of complementary DNA strands is affected by . . .




1. conc .
Of DNA




2.
length of DNA molecule



( more stable moi if G C content T then A T content )
G C
- -


3.
.
-
content




4.
%
of repetitive DNA

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