Organic Molecules Quiz

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Questions and Answers

Which type of molecule is not normally found in living things?

Proteins

Lipids

Inorganic molecules (correct)

Carbohydrates

Which type of reaction requires an input of energy?

Biuret reagent

Benedict's reagent

Hydrolytic Reactions

Dehydration Synthesis (correct)

What color does Benedict's reagent turn when monosaccharides are present?

Blue

Green

Yellow

Red (correct)

What is the purpose of Sudan IV in the Sudan IV test for lipids?

To emulsify lipids Signup and view all the answers

What color does the Biuret reagent turn after reacting with peptide bonds?

Purple/violet Signup and view all the answers

What are monomers of proteins called?

Amino Acids Signup and view all the answers

What type of bonds hold amino acids together in proteins?

Peptide bonds Signup and view all the answers

What is the purpose of the Dische Diphenylamine Test?

To distinguish DNA from RNA Signup and view all the answers

How many different amino acids are there in living things?

20 Signup and view all the answers

What type of reactions release energy?

Hydrolytic Reactions Signup and view all the answers

Which domain does Escherichia coli belong to?

Domain Bacteria Signup and view all the answers

What is the main function of the pseudopodia in Amoeba?

Locomotion and capturing prey Signup and view all the answers

Which kingdom does Eudorina belong to?

Kingdom Protista Signup and view all the answers

What is the function of the flagellum in Eudorina?

Allows it to swim and move easily Signup and view all the answers

Which domain does Elodea belong to?

Domain Eukarya Signup and view all the answers

What is the main function of the central vacuole in Elodea?

Holds materials and wastes for the cell Signup and view all the answers

Which kingdom does Solanum sp. (Potato) belong to?

Kingdom Plantae Signup and view all the answers

What is the main function of amyloplasts in Solanum sp. (Potato) cells?

Store starch granules Signup and view all the answers

What was visible in the Onion peel cells under the microscope?

Cell walls and nuclei Signup and view all the answers

Which kingdom does Saccharomyces sp. (Yeast) belong to?

Kingdom Fungi Signup and view all the answers

Which of the following is true about enzymes?

Enzymes lower the activation energy of reactions. Signup and view all the answers

What is the primary structure of a protein?

The sequence of amino acids in a protein. Signup and view all the answers

Which of the following is true about hydrogen bonds in proteins?

Breaking of hydrogen bonds can lead to denaturation of a protein. Signup and view all the answers

What is the active site of an enzyme?

The location on an enzyme where the substrate binds. Signup and view all the answers

What happens during induced fit in enzyme-substrate interaction?

The enzyme changes its shape to fit the substrate. Signup and view all the answers

Why are only small amounts of enzymes needed in reactions?

Enzymes can be reused by substrates several times. Signup and view all the answers

What is the reaction rate of an enzyme?

The speed at which the enzyme converts a substrate into products. Signup and view all the answers

What happens to enzyme activity at temperatures lower than the optimum?

Enzyme activity slows down but does not denature. Signup and view all the answers

What happens to enzyme activity at temperatures higher than the optimum?

Enzyme activity denatures. Signup and view all the answers

What is the effect of temperature on enzyme activity?

As temperature increases, enzyme activity increases. Signup and view all the answers

Study Notes

Biomolecules and Reactions

Inorganic molecules are not normally found in living things.
Endergonic reactions require an input of energy.
Exergonic reactions release energy.

Carbohydrate Tests

Benedict's reagent turns blue-green when monosaccharides are present.
The purpose of Sudan IV in the Sudan IV test for lipids is to stain lipids.

Protein Structure and Function

Monomers of proteins are called amino acids.
Amino acids are held together in proteins by peptide bonds.
The Biuret reagent turns purple after reacting with peptide bonds.
There are 20 different amino acids found in living things.

Cell Biology

The purpose of the Dische Diphenylamine Test is to detect the presence of DNA.
Escherichia coli belongs to the domain Bacteria.
The main function of the pseudopodia in Amoeba is to capture food and move around.
Eudorina belongs to the kingdom Protista.
The function of the flagellum in Eudorina is to move around.
Elodea belongs to the domain Eukarya.
The main function of the central vacuole in Elodea is to store water and maintain turgor pressure.
Solanum sp. (Potato) belongs to the kingdom Plantae.
The main function of amyloplasts in Solanum sp. (Potato) cells is to store starch.
Cell walls and cell membranes were visible in the Onion peel cells under the microscope.
Saccharomyces sp. (Yeast) belongs to the kingdom Fungi.

Enzymes

Enzymes are highly specific to their substrates.
The primary structure of a protein is its sequence of amino acids.
Hydrogen bonds in proteins are weak and contribute to the protein's 3D structure.
The active site of an enzyme is the region where the substrate binds.
During induced fit, the enzyme's active site changes shape to fit the substrate.
Only small amounts of enzymes are needed in reactions because they are highly efficient.
The reaction rate of an enzyme is affected by factors such as temperature, pH, and substrate concentration.
Enzyme activity decreases at temperatures lower than the optimum.
Enzyme activity often increases at temperatures higher than the optimum, but can eventually denature the enzyme.
Temperature affects enzyme activity by altering the protein's shape and active site.

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Description

Test your knowledge about organic molecules and their types with this informative quiz! Learn about proteins, lipids, carbohydrates, and nucleic acids, and understand the difference between organic and inorganic molecules. Explore the concept of dehydration synthesis and its role in forming strong covalent bonds. Challenge yourself and expand your understanding of the fascinating world of organic chemistry!