Biochemistry Chapter: Carbohydrates Quiz
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Questions and Answers

Which of the following is a hexose sugar?

  • Glyceraldehyde
  • Fructose (correct)
  • Dihydroxyacetone
  • Ribose

Trioses are three-carbon sugars.

True (A)

What type of linkage is formed between two monosaccharides to create a disaccharide?

glycosidic linkage

Monosaccharides serve as a major fuel for cells and as raw material for building __________.

<p>molecules</p> Signup and view all the answers

Match the following sugars with their respective types:

<p>Ribose = Pentose Glucose = Hexose Dihydroxyacetone = Triose Ribulose = Pentose</p> Signup and view all the answers

What is the primary component of plant cell walls?

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

Humans can digest cellulose found in food.

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

What role do some microbes play in the digestion of cellulose?

<p>They use enzymes to digest cellulose.</p> Signup and view all the answers

Chitin is found in the _____ of arthropods.

<p>exoskeleton</p> Signup and view all the answers

Match the following categories with their descriptions:

<p>Fats = Energy storage molecules Phospholipids = Form cell membranes Steroids = Hormonal signaling molecules Chitin = Structural polysaccharide in exoskeleton</p> Signup and view all the answers

Flashcards

Aldose

Sugars with a carbonyl group (C=O) at the end of the carbon chain.

Ketose

Sugars with a carbonyl group (C=O) within the carbon chain.

Glycosidic Linkage

A covalent bond formed between two monosaccharides when a water molecule is removed.

Disaccharide

A sugar molecule consisting of two monosaccharide units.

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Monosaccharide

A sugar molecule consisting of a single monosaccharide unit.

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Cellulose

A structural polysaccharide that makes up plant cell walls. It's a polymer of glucose monomers linked together in a straight chain.

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Chitin

A structural polysaccharide found in the exoskeletons of arthropods, such as insects and crustaceans. It also supports the cell walls of fungi.

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Hydrophobic

A type of lipid with a high water-repelling property. It consists mostly of hydrocarbons, which are nonpolar and do not interact with water.

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Lipids

A group of biological molecules that share the characteristic of being hydrophobic (water-repelling). They are not polymers, meaning they are not built from repeating monomer units.

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Biologically important lipids

Important types of lipids that play crucial roles in biological systems. They include Fats, Phospholipids, and Steroids.

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