During digestion, large molecules are broken down into their constituent monomers (subunits) - VCE - SSCE Biology - Question 6 - 2007 - Paper 1
Question 6
During digestion, large molecules are broken down into their constituent monomers (subunits).
a. Complete the table below.
| Large molecules | Monomers (subunits) ... show full transcript
Worked Solution & Example Answer:During digestion, large molecules are broken down into their constituent monomers (subunits) - VCE - SSCE Biology - Question 6 - 2007 - Paper 1
Step 1
Complete the table below.
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Answer
Large molecules
Monomers (subunits)
Lipid
Fatty acids OR fatty acids and glycerol OR no monomer
DNA
Nucleotides
Step 2
Explain how a monosaccharide enters an epithelial cell.
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Answer
A monosaccharide enters an epithelial cell primarily through facilitated diffusion or active transport. In facilitated diffusion, monosaccharides pass through specific protein channels embedded in the cell membrane, allowing them to move along their concentration gradient without the need for energy. Active transport, on the other hand, requires energy to move monosaccharides against their concentration gradient, typically using specific transporter proteins.
Step 3
For what purpose would a cell use a lipid monomer?
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Cells use lipid monomers, such as fatty acids, to produce phospholipids that form the bilayer of cell membranes. Additionally, lipid monomers can serve as energy storage molecules or signaling molecules within the cell.
Step 4
Part of the sequence of a DNA strand responsible for the production of an amino-acid chain is shown. Below it, write the complementary DNA base sequence.
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Answer
The complementary DNA base sequence to the provided DNA sequence would be:
TAC
TTG
TCG
CCG
Step 5
What does G in AGC stand for?
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The G in AGC stands for guanine, which is one of the four nucleotide bases in DNA and RNA.
