Mer Scott
Quiz by , created more than 1 year ago

Objectives: List the major atomic constituents of biological macromolecules. • Describe the relationship between molecular “building blocks” and higher order of structures in cells. • Identify the structures of the major types of biomolecules in cells. • Describe, with examples, the roles of carbohydrates, lipids, proteins and nucleic acids in cells.

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Mer Scott
Created by Mer Scott almost 4 years ago
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  • L3 Molecular Composition of Cells

    Question 1 of 15

    1

    Amino acids, simple carbohydrates, and lipids are examples of:

    Select one of the following:

    • "Building blocks"

    • Macromolecules

    • Organelles

    Explanation

    Question 2 of 15

    1

    Proteins, DNA (nucleic acid), and complex carbohydrates are examples of:

    Select one of the following:

    • Macromolecules

    • Organelles

    • Monosaccharides

    Explanation

    Question 3 of 15

    1

    Macromolecules form supramolecular assemblies. Which of these examples are NOT a supramolecular assembly?

    Select one or more of the following:

    • Membranes

    • Ribosomes

    • Chromatin

    • Mitochondria

    Explanation

    Question 4 of 15

    1

    Which of these "building blocks" cannot be polymerised?

    Select one or more of the following:

    • Amino acids

    • Simple carbohydrates

    • Neucleobases

    • Lipids

    Explanation

    Question 5 of 15

    1

    Which statement about macromolecules is INCORRECT?

    Select one or more of the following:

    • Monosaccharides and disaccharides are simple carbohydrates.

    • Monosaccharides and disaccharides are what we call sugars.

    • A disaccharide is made up of two monosaccharides.

    • A polysaccharide is made up more than 10 monosaccharides.

    • A polysaccharide is a simple carbohydrate.

    Explanation

    Question 6 of 15

    1

    Hexose monosaccharides make up . Pentose monosaccharides make up e.g. deoxyribose, ribose.

    Drag and drop to complete the text.

      higher order carbohydrates
      higher order carbohydrates
      nucleic acids
      nucleic acids

    Explanation

    Question 7 of 15

    1

    Which of these statements/"equations" is false?

    Select one or more of the following:

    • Glucose + Fructose = Sucrose

    • Galactose + Glucose = Lactose

    • Glucose + Glucose = Maltose

    • Fructose + Galactose = Trehalose

    Explanation

    Question 8 of 15

    1

    Which of these statements about carbohydrates are true?

    Select one or more of the following:

    • Starch and cellulose are polysaccharides found in plants.

    • Glycogen is the complex carbohydrate found in animals.

    • Cellulose is formed from β-glucose monomers.

    • β-glucose has all its -OH groups on the same side.

    • α-glucose is an isomer of the glucose molecule with the -OH groups on different sides.

    • Starch and glycogen are made up of α-glucose monomers.

    Explanation

    Question 9 of 15

    1

    Select from the dropdown lists to complete the text.

    Glucose can be in a ( linear, ring ) form, which is more reactive, or in a ( ring, linear ) form, which is more stable.

    Explanation

    Question 10 of 15

    1

    Which of the following is NOT a function or carbohydrates?

    Select one or more of the following:

    • Cell recognition

    • Storage of energy

    • Structure

    • Synthesis of proteins

    Explanation

    Question 11 of 15

    1

    Lipids (fats, steroids, phospholipids, fat soluble vitamins) are hydrophilic.

    Select one of the following:

    • True
    • False

    Explanation

    Question 12 of 15

    1

    Which of the following statements about functions of lipids are CORRECT?

    Select one or more of the following:

    • Lipids provide structure.

    • Lipids like testosterone perform regulatory functions.

    • Lipids store energy.

    • Lipids help resist tension.

    Explanation

    Question 13 of 15

    1

    Which statement BEST describes the differences between DNA and RNA?

    Select one of the following:

    • DNA is a double helix while RNA is a single strand.

    • DNA is made up of four bases, and RNA shares three of these, while having one unique base (uracil in place of thymine).

    • DNA is a double helix with hydrogen groups, and contains the bases thymine, adenine, guanine, and cytosine. RNA is a single strand with -OH groups, and uses uracil in place of thymine.

    Explanation

    Question 14 of 15

    1

    Which of these statements about proteins is INCORRECT?

    Select one of the following:

    • Proteins are polymers of amino acids.

    • There are about 100,000 unique proteins

    • One gene can code for several proteins

    • Proteins are mainly for structural support.

    Explanation

    Question 15 of 15

    1

    Which of these are functions of proteins?

    Select one or more of the following:

    • Proteins provide structure e.g collagen to resist tension.

    • Proteins are regulatory and maintain homeostasis e.g. insulin in the plasma membrane.

    • Proteins are contractile e.g. actin and myosin in muscle fibers.

    • Proteins can transport things e.g. haemoglobin moving oxygen via the cardiovascular system.

    • Proteins can store materials e.g egg white - albumin

    • Some proteins are highly acidic and act to break down cells in their regulated death cycle.

    • Some proteins are immune proteins which protect the system e.g. antibodies like IgG

    Explanation