Chemistry
Test Your Chemistry Knowledge
Discover the fascinating world of chemistry with our engaging quiz! This quiz is designed to challenge your understanding of organic chemistry concepts, including polymers, enzymes, and lipids.
Whether you're brushing up on your knowledge for academic purposes or just testing your skills, this quiz covers:
- Polymers and their building blocks
- The structure and fun
ction of enzymes - Characteristics of lipids and carbohydrates
Polymers produced by the linkage of monosaccharide monomers
Monosaccharide
Disaccharide
Polysaccharide
Protein
A sugar that forms from two monosaccharides
Monosaccharide
Disaccharide
Polysaccharide
Protein
a peptide with more than 100 amino acids
Monosaccharide
Disaccharide
Polysaccharide
Protein
Which form of polysaccharide is found in animals
Starch
Glycogen
The repeating unit of cellulose is _____.
Glucose
Lactose
Fructose
Sucrose
Differences between amino acids are normally due to differences in which part of the molecule?
Amino group
Carboxyl group
Side chain
None of the above
A peptide bond is a bond between which functional groups?
Amino and alcohol
Amino and carboxyl
Carboxyl and alcohol
Carbonyl and carbonyl
What is the function of an enzyme?
Increased the rate of biochemical reactions
Causes biochemical reactions to stop and start
Acts as one of the reactants in a biochemical reactions
Provides extra heat for biochemical reactions
A triglyceride is a compound of glycerol and three ____.
Alcohols
Ethers
Alkenes
Fatty acids
What type of reactions is a saponification?
Hydrolysis
Dehydrogenation
Hydrogenation
Acid-base
An ester of a long-chain fatty acid and long-chain alcohol is ________
Fat
Oil
Triglyceride
Wax
Glucose has _______ functional group
An aldehyde
A ketone
An ester
A halogen
Fructose has ______ functional group
An aldehyde
A ketone
An ester
A halogen
____________ is the process used to make soap
Polymerization
Saponification
Hydrogenation
Esterification
Triglyceride are ___________
Lipids that contain phosphate groups
Triesters of glycerol and long-chain carboxylic acids
Combination of simple three sugars into polysaccharides
Breakdown of proteins into amino acids
__________ are biological polymers made of amino acids that are linked by peptide bonds
Ethers
Carbohydrates
Alcohols
Proteins
Amino acids contain ___________
Carboxyl group (-COOH)
An amino group (-NH2)
Both an amino group (-NH2) and carboxyl group (-COOH)
None of the above
An enzyme-substrate complex is _________________
The structure that forms when a molecule attaches to an active site of an enzyme
A metal ion or small molecule that must be present for a catalyzed reaction to occur
The process in which cells directly use solar energy to make food
The structure that forms when building lipids from glycerin and fatty acids
A phospholipid ___________
Has an ionic head that is hydrophobic and soluble in water, and a hydrocarbon tail that is hydrophilic and water-insoluble
Has an ionic head that is hydrophilic and soluble in water, and a hydrocarbon tail that is a hydrophobic and water-insoluble
Has an hydrocarbon head that is hydrophobic and soluble in water, and a hydrocarbon tail that is hydrophilic and water-insoluble
None of the above
_______________ is used by plants to construct cell walls that are hard and rigid
Lactose
Fuctose
Sucrose
Cellulose
Glucose and fructose are constitutional isomers
True
False
Why an amino acid can exist as enantiomers?
Because the central carbon of an amino acid is asymmetric
Because the central carbon of an amino acid is symmetric
A helix
Irregular folding
____________ are the molecules on which an enzyme act
Substrates
Active site
Coenzymes
All of the above
In water, phospholipids spontaneously form a spherical double layer, called _____________-
A lipid bilayer
A lipidoses
A lipase
None of the above
What is a major difference between lipids and other biological molecules, like carbohydrates and proteins?
Lipids tend to dissolve readily in organic solvents, whereas carbohydrates and proteins tend to dissolve in water
Carbohydrates and proteins tend to dissolve readily in organic solvents, whereas lipids tend to dissolve in water
Lactose
Fructose
Sucrose
Cellulose
Glucose and fructose both have the molecular formula ___________
0%
0
0%
0
0%
0
0%
0
Carbohydrates
Alcohols
Proteins
Triglycerides
Simple sugars are also called __________
Disaccharides
Monosaccharides
Polysaccharides
Carboxylic acids
The cyclic forms of glucose
0%
0
0%
0
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