(a) Table 1.1 shows some features of four biological molecules that are all polymers. Complete Table 1.1 by using a tick (✓) to indicate the features that apply to each polymer. Table 1.1 feature amylopectin cellulose RNA polypeptide --- --- --- --- --- synthesised from amino acid monomers contains glycosidic bonds polymer is branched contains nitrogen can be found in both animal and plant cells (b) Fig. 1.1 is a simple diagram of a phospholipid molecule. Explain how the…

Biology 9700/23 — October/November 2016

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

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Topics Infectious Diseases · Biological Molecules · Cell Membranes and Transport · Enzymes · Transport in Plants · Nucleic Acids and Protein Synthesis · +3 more

Q1Biological MoleculesCell Membranes and TransportFree sample

(a)

Table 1.1 shows some features of four biological molecules that are all polymers.

Complete Table 1.1 by using a tick (✓) to indicate the features that apply to each polymer.

Table 1.1

feature	amylopectin	cellulose	RNA	polypeptide
synthesised from amino acid monomers
contains glycosidic bonds
polymer is branched
contains nitrogen
can be found in both animal and plant cells

(b)

Fig. 1.1

Fig. 1.1 is a simple diagram of a phospholipid molecule.

Explain how the structure of a phospholipid molecule makes it suitable for its function in cell membranes. You may label and annotate Fig. 1.1 as part of your answer.

(c)

State two components of a cell surface membrane other than phospholipid molecules and describe their function.

component 1 ______

function ______

component 2 ______

function ______

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5 more questions

Q2Enzymes · Infectious Diseases14M
Q3Transport in Plants8M
Q4Nucleic Acids and Protein Synthesis7M
Q5Transport in Mammals · Gas Exchange10M
Q6Infectious Diseases · Immunity10M

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