L3 Molecular Composition of Cells

Beschreibung

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.
Mer Scott
Quiz von Mer Scott, aktualisiert more than 1 year ago
Mer Scott
Erstellt von Mer Scott vor mehr als 7 Jahre
24
3

Zusammenfassung der Ressource

Frage 1

Frage
Amino acids, simple carbohydrates, and lipids are examples of:
Antworten
  • "Building blocks"
  • Macromolecules
  • Organelles

Frage 2

Frage
Proteins, DNA (nucleic acid), and complex carbohydrates are examples of:
Antworten
  • Macromolecules
  • Organelles
  • Monosaccharides

Frage 3

Frage
Macromolecules form supramolecular assemblies. Which of these examples are NOT a supramolecular assembly?
Antworten
  • Membranes
  • Ribosomes
  • Chromatin
  • Mitochondria

Frage 4

Frage
Which of these "building blocks" cannot be polymerised?
Antworten
  • Amino acids
  • Simple carbohydrates
  • Neucleobases
  • Lipids

Frage 5

Frage
Which statement about macromolecules is INCORRECT?
Antworten
  • 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.

Frage 6

Frage
Hexose monosaccharides make up [blank_start]higher order carbohydrates[blank_end]. Pentose monosaccharides make up [blank_start]nucleic acids[blank_end] e.g. deoxyribose, ribose.
Antworten
  • higher order carbohydrates
  • nucleic acids

Frage 7

Frage
Which of these statements/"equations" is false?
Antworten
  • Glucose + Fructose = Sucrose
  • Galactose + Glucose = Lactose
  • Glucose + Glucose = Maltose
  • Fructose + Galactose = Trehalose

Frage 8

Frage
Which of these statements about carbohydrates are true?
Antworten
  • 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.

Frage 9

Frage
Glucose can be in a [blank_start]linear[blank_end] form, which is more reactive, or in a [blank_start]ring[blank_end] form, which is more stable.
Antworten
  • linear
  • ring
  • ring
  • linear

Frage 10

Frage
Which of the following is NOT a function or carbohydrates?
Antworten
  • Cell recognition
  • Storage of energy
  • Structure
  • Synthesis of proteins

Frage 11

Frage
Lipids (fats, steroids, phospholipids, fat soluble vitamins) are hydrophilic.
Antworten
  • True
  • False

Frage 12

Frage
Which of the following statements about functions of lipids are CORRECT?
Antworten
  • Lipids provide structure.
  • Lipids like testosterone perform regulatory functions.
  • Lipids store energy.
  • Lipids help resist tension.

Frage 13

Frage
Which statement BEST describes the differences between DNA and RNA?
Antworten
  • 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.

Frage 14

Frage
Which of these statements about proteins is INCORRECT?
Antworten
  • 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.

Frage 15

Frage
Which of these are functions of proteins?
Antworten
  • 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
Zusammenfassung anzeigen Zusammenfassung ausblenden

ähnlicher Inhalt

L5 Structure and Function of viruses
Mer Scott
L6 Cell Anatomy: Membrane bound organelles
Mer Scott
L7 The Endomembrane System
Mer Scott
L8 The Cytoskeleton, ECM, and Cellular Junctions (Cell Shape Regulation)
Mer Scott
L9 Energy in the Cell
Mer Scott
L2 Basics of Cell Biology
Mer Scott
L10 ATP and Redox Reactions
Mer Scott
Zivilrecht - Streite Sachenrecht
myJurazone
Zeiten Englisch
barbara91
1_Blut und Blutkreislauf
Ulrike Renauer
Vetie - Allgemeine Pathologie
Fioras Hu