gcse biology week 6 quiz
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7/23/2019 GCSE Biology Week 6 Quiz
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1. Phosphate group
What are the 3
components of anucleotide?
2. Pentose (5 carbon) Sugar(deoxyribose)
3. Nitrogenous Base (belonging to
the chemical groups purine or
pyrimadine
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Condensation reaction between the 5
phosphate group and 3’ OH group of
the pentose sugar. Forming a
phosphodiester bond.
How are nucleotides
bound together toform
‘polynucleotides’?
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Adenine
Guanine
Cytosine
Thymine
Name the four bases
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A always bonds with T (2 H bonds)
G always bonds with C (3 H bonds)
What is complementary
base pairing?
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Weak hydrogen bonds join the
Bases.
What type of bond holds
bases together?
A T
G C
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! ! 4 / ) 56,#.777 8 4 9 ) *:: ; 56 ) +<,
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.&KA"?#0# LM!N $>A2
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What is
Transcription?
/&A"#@&?J2?." 21 - (.&5*11 ,6-,
2+7&)7*1 2&A"#@&?B?"K
-@."P%&2?"K3 &8 3*+*,25
2+8&.'-,2&+ 9*#3# - :;<;=
8.&' LM! ,& QM!#
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!"#"$% '() *+) *(,-.)*/ 01
2'/) .)**)(/ *+'* 304) 10(
'5,60 '3,4/7 #$8 '64 59$8
+':) !"#"$%;
What is a CODON?
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>6* -+,25&?&+ 21 ,6* 5&'()*'*+,-./
5&?2+3 ,.2()*, &8 +45)*&,2?*1 2+ '@<A ?4.
2+3 ,6* ,.-+1)-,2&+ (6-1* &8 (.&,*2+
1/+,6*121#
What is an
ANTICODON?
A 1*B4*+5* &8 C 5&'()*'*+,-./
+45)*&,2?*1 )&5-,*? &+ &+* *+? &8
,@<A#
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Transcription can be broken down
into 3 phases, what are they?
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What is an EXON?
RS."# 9-.* RS(.*11*?=D RS."#-.* ,6* 9.H?"K 1*5,2&+1 &8 E<A
F 0QM!
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What is an INTRON?
F"2&."# -.* ,6* "."[email protected]?"K1*5,2&+1 &8 E<A F 0QM!
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! #$%& '( )*'#* +&,&-./ 01-'2/&1+3 *.,& 1*& +.4& 4&.('(56
7656 8*& 5&(&1'# #$%& '+ %&5&(&-.1& 9&#.:+& 1*&-& .-& 4.(;
'(+1.(#&+ '( )*'#* %'<<&-&(1 #$%$(+ +2&#'<;
1*& +.4& .4'($ .#'%6
8. What is meant by
the term
Degenerate...?
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tRNA
What are the 3 types
of RNA
mRNA rRNA
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What is Translation?
/&A"#EA2?." 21 - 1,*(
2+ J&.2%?" #U"2>%#?# G6*.* ,6* 3*+*,25
5&?* 5-..2*? 0/ 0QM! 21 ?*5&?*? ,&
(.&?45* ,6* 1(*52825 1*B4*+5*&8 A0?". A@?H# 2+ - J.EUJ%J2?H% 56-2+#
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Translation can be broken down
into 3 phases, what are they?
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A +45)*&,2?* 21 -
0.".0%&D ,6* H042)?2+30)&5I1J &8 E<A -+? @<A#
#)1,6) $<3.)0*,4)
>6* +45)*&,2?*1 -.* '-?* 4( &8 - "?2&.K%".1#
BA#%K A J%"2.#% #1KA& -+? - J>.#J>A2% K&.1J#
=+'* '() *+) 305-06)6*/ *+'* 5'>) <- '
6<3.)0*,4)?