AS Level Biology A H020/02 Depth in biology COMPREHENSIVE QUESTIONS AND ANSWERS (100% CORRECT ANSWERS) A+ GRADED | ALREADY PASSED!!

6/4/25, 7:44 AM AS Level Biology A H020/02 Depth in biology COMPREHENSIVE QUESTIONS AND ANSWERS (100% CORRECT ANSWERS…




AS Level Biology A H020/02 Depth in biology
COMPREHENSIVE QUESTIONS AND ANSWERS
(100% CORRECT ANSWERS) A+ GRADED |
ALREADY PASSED!!

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Terms in this set (19)


(a) Fig. 1.1 shows the U- amine group
general structure of an V- carboxyl group
amino acid
State the names of the
groups labelled U and V

Fig. 1.2 shows a Name of bond W- peptide bond
representation of a short Type of reaction- condensation reaction
polypeptide chain made
from three amino acids
Name bond W and state
what type of reaction
takes place to form this
bond.




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, 6/4/25, 7:44 AM AS Level Biology A H020/02 Depth in biology COMPREHENSIVE QUESTIONS AND ANSWERS (100% CORRECT ANSWERS…


Pepsin is a protease DNA, copied to mRNA
enzyme with a DNA, is too large to leave nucleus
polypeptide chain
containing 327 amino
acids.
Titin is the largest known
protein. It has a
polypeptide chain
containing at least 92
times more amino acids
than pepsin.
(i) DNA sequences in
genes code for
polypeptide molecules
such as pepsin and titin.
Explain why a process
known as transcription is
necessary for
polypeptide synthesis

Calculate the minimum 327 x 92 x 3= 90,252
length of the DNA base
sequence required to
code for titin. Show your
working




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