Biomolecules I
30 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of bond is formed between two monosaccharides to create a disaccharide?

  • Van der Waals bond
  • Covalent bond (correct)
  • Ionic bond
  • Hydrogen bond

What is the main function of polysaccharides in living organisms?

  • Protein synthesis
  • Cell division
  • DNA replication
  • Energy storage (correct)

Which type of cells store glycogen as an energy reserve?

  • Muscle cells
  • Liver cells (correct)
  • Red blood cells
  • Nerve cells

Where is starch primarily stored as an energy reserve in plants?

<p>Chloroplasts &amp; other plastids (D)</p> Signup and view all the answers

What determines the structure and function of a polysaccharide?

<p>Its sugar monomers and positions of glycosidic linkages (C)</p> Signup and view all the answers

What is the main cellular function of monosaccharides?

<p>Main fuels for cellular work (B)</p> Signup and view all the answers

Which structural compound is a major component of the tough wall of plant cells?

<p>Cellulose (A)</p> Signup and view all the answers

What type of glycosidic linkages do cellulose molecules have?

<p>Beta (β) (D)</p> Signup and view all the answers

Which polysaccharide is used by insects and crustaceans to build an exoskeleton?

<p>Chitin (A)</p> Signup and view all the answers

What type of glucose monomer does chitin have with a nitrogen-containing appendage?

<p>With β linkages (D)</p> Signup and view all the answers

In starch, which component is somewhat branched?

<p>Amylopectin (D)</p> Signup and view all the answers

What type of glucose polymers are helical in structure?

<p>α glucose polymers (D)</p> Signup and view all the answers

Which type of carbohydrate is water-insoluble?

<p>Polysaccharides (C)</p> Signup and view all the answers

What is the major function of lipids according to the text?

<p>Energy storage (D)</p> Signup and view all the answers

Which type of lipid is an important component of the plasma membrane?

<p>Phospholipids (B)</p> Signup and view all the answers

What functional group is present in a fatty acid?

<p>Carboxyl group (COOH) (B)</p> Signup and view all the answers

Which type of lipid acts as energy-reserving molecules?

<p>Triglyceride (fats) (C)</p> Signup and view all the answers

What are the monomers of disaccharides and polysaccharides?

<p>Glucose, fructose, galactose (A)</p> Signup and view all the answers

What is the main difference between structural isomers and stereoisomers?

<p>Structural isomers have the same chemical formula, but different skeleton arrangements, while stereoisomers have the same molecular formula and sequence of bonded atoms. (A)</p> Signup and view all the answers

Which statement best describes enantiomers?

<p>Enantiomers are mirror images that are not superimposable on each other. (D)</p> Signup and view all the answers

What distinguishes an enantiomer from a diastereomer?

<p>An enantiomer has the same physical properties as its mirror image, while a diastereomer does not. (C)</p> Signup and view all the answers

Which functional group is present in both glucose and fructose?

<p>Aldehyde (B)</p> Signup and view all the answers

How do monosaccharides differ from polysaccharides?

<p>Monosaccharides are simple sugars consisting of single carbohydrate units, while polysaccharides are complex carbohydrates made up of multiple sugar units. (D)</p> Signup and view all the answers

Which type of molecule consists of identical or similar building blocks (monomers) linked together?

<p>Polysaccharides (A)</p> Signup and view all the answers

In terms of stereochemistry, what does it mean for a molecule to be chiral?

<p>The molecule is non-superimposable on its mirror image. (D)</p> Signup and view all the answers

What is the term for the process of breaking down a polymer into its monomer units?

<p>Hydrolysis (C)</p> Signup and view all the answers

Which macromolecule is a polymer made up of amino acid monomers?

<p>Proteins (A)</p> Signup and view all the answers

In stereochemistry, what term describes molecules that have the same molecular formula but different arrangements of atoms in space?

<p>Isomers (A)</p> Signup and view all the answers

Which type of molecule consists of thousands of atoms connected covalently?

<p>Polysaccharides (C)</p> Signup and view all the answers

Which functional group is commonly found in carbohydrates and helps in forming glycosidic bonds between monosaccharides?

<p>Hydroxyl group (A)</p> Signup and view all the answers

More Like This

Structural Isomers in Chemistry
5 questions
Structural Isomers in Organic Chemistry
30 questions
Glucose Isomers: Alpha and Beta Forms
24 questions
Structural Isomers in Chemistry
5 questions

Structural Isomers in Chemistry

VigilantSymbolism6192 avatar
VigilantSymbolism6192
Use Quizgecko on...
Browser
Browser