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    .Archivetempt1 MOLECULES OF LIFE - Q Modul II (1-7)

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    Fatin Hanani
    1. This document discusses the key biomolecules that make up living things: proteins, carbohydrates, lipids, and nucleic acids. 2. It provides questions to test understanding of the structure and properties of these molecules, including how they are assembled from monomers and their roles in biological functions. 3. Diagrams are included to illustrate the molecular structure of samples biomolecules like disaccharides, triglycerides, polypeptides, nucleotides and DNA. Students are tasked with labeling components and explaining concepts.

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    .Archivetempt1 MOLECULES OF LIFE - Q Modul II (1-7)

    Uploaded by

    Fatin Hanani
    35 views7 pages
    1. This document discusses the key biomolecules that make up living things: proteins, carbohydrates, lipids, and nucleic acids. 2. It provides questions to test understanding of the structure and properties of these molecules, including how they are assembled from monomers and their roles in biological functions. 3. Diagrams are included to illustrate the molecular structure of samples biomolecules like disaccharides, triglycerides, polypeptides, nucleotides and DNA. Students are tasked with labeling components and explaining concepts.

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    .archivetempT1 MOLECULES OF LIFE_Q Modul II (1-7)

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    1. This document discusses the key biomolecules that make up living things: proteins, carbohydrates, lipids, and nucleic acids. 2. It provides questions to test understanding of the structure and properties of these molecules, including how they are assembled from monomers and their roles in biological functions. 3. Diagrams are included to illustrate the molecular structure of samples biomolecules like disaccharides, triglycerides, polypeptides, nucleotides and DNA. Students are tasked with labeling components and explaining concepts.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    35 views7 pages

    .Archivetempt1 MOLECULES OF LIFE - Q Modul II (1-7)

    Uploaded by

    Fatin Hanani
    1. This document discusses the key biomolecules that make up living things: proteins, carbohydrates, lipids, and nucleic acids. 2. It provides questions to test understanding of the structure and properties of these molecules, including how they are assembled from monomers and their roles in biological functions. 3. Diagrams are included to illustrate the molecular structure of samples biomolecules like disaccharides, triglycerides, polypeptides, nucleotides and DNA. Students are tasked with labeling components and explaining concepts.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 7

    Modul II BioMASTERY : Molecules of Life

    TOPIC 1: MOLECULES OF LIFE

    1. (a) Draw how the one water molecule form four hydrogen bonds.

    [3 marks]

    (b) ‘Solid ice floats on liquid water’


    Based on the statement above, relate on the ability of the aquatic organisms to live in
    the Antarctica?
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    [2 marks]

    (c) How does the tip of the shoot of a tall tree get their supply of water from the root in the
    earth?
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    [5 marks]

    Biology Unit, KMK 1


    Modul II BioMASTERY : Molecules of Life

    2. (a) FIGURE 1 below shows the structural formula of a disaccharide.

    FIGURE 1

    i. Name the disaccharide shown in FIGURE 1.


    ___________________________________________________________________
    [1 mark]
    ii. Draw the monomer of the disaccharides shown above

    [2 marks]
    iii. Name the bond that links the two monomers
    ___________________________________________________________________
    [1 mark]
    iv. State the chemical reaction that breaks down disaccharide to its monomers.
    ___________________________________________________________________
    [1 mark]
    b) State the functional roles of starch and cellulose in plants.
    ___________________________________________________________________
    ___________________________________________________________________
    ___________________________________________________________________
    [2 marks]

    Biology Unit, KMK 2


    Modul II BioMASTERY : Molecules of Life

    3. FIGURE 2 below shows the types of lipid

    LIPIDS

    Molecule A Molecule B Molecule C

    Lecithin
    Molecule D Molecule E

    Oils
    Butter
    most animal

    FIGURE 2
    (a) Identify:
    Molecule A - ______________________________________________
    Molecule B - ______________________________________________
    Molecule C - ______________________________________________
    Molecule D - ______________________________________________
    Molecule E - ______________________________________________
    [5 marks]
    (b) Explain why molecule A does not dissolve in water?
    ______________________________________________________________________
    ______________________________________________________________________
    [2 marks]
    (c) Draw and label the complete formation of Triglyceride.

    [4 marks]
    (d) Explain the process involved in above process.
    Biology Unit, KMK 3
    Modul II BioMASTERY : Molecules of Life

    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    [2 marks]

    (e) Triglycerides can be classified into 2 types of fats (D and E). Explain two differences
    between D and E. Compare D and E based on their structure and give example.
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________

    [4 marks]
    (f) Explain the interaction of phospholipids with water.
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    [2 marks]

    4. FIGURE 3 below shows the structural formula of polypeptide molecule.

    Biology Unit, KMK 4


    Modul II BioMASTERY : Molecules of Life

    (a) Mark the position of the following group on FIGURE 3:


    i) An amino group
    ii) A carboxyl group
    iii) A peptide bond
    iv) A carbon ring
    v) A hydroxyl group

    (b) Show the structural formula of a polypeptide, if another molecule glycine is added to
    form a pentapeptide molecule.

    (c) State the chemical terms used to explain the following:


    i) Further addition of amino acids to peptide
    _____________________________________________________________________
    ii) Elimination of amino acids from peptide
    _____________________________________________________________________

    Biology Unit, KMK 5


    Modul II BioMASTERY : Molecules of Life

    5. (a) By using symbols given below, draw the structure of nucleotide, dinucleotide,
    polynucleotide and DNA structure

    Thymine

    Adenine

    Nucleotide Dinucleotide Polynucleotide

    Biology Unit, KMK 6


    Modul II BioMASTERY : Molecules of Life

    (b) Explain the formation of a polynucleotide.


    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    ______________________________________________________________________
    [3 marks]

    (c) State the three types of RNA and explain each function.
    Types of RNA Function

    [3 marks]

    Biology Unit, KMK 7

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