Podcast
Questions and Answers
Which chemical element is present in carbohydrates, proteins, and lipids?
Which chemical element is present in carbohydrates, proteins, and lipids?
- Carbon (correct)
- Phosphorus
- Sulfur
- Nitrogen
What smaller basic units combine to form starch and glycogen?
What smaller basic units combine to form starch and glycogen?
- Simple sugars (correct)
- Glycerol
- Fatty acids
- Amino acids
Which type of molecule is formed from amino acids?
Which type of molecule is formed from amino acids?
- Carbohydrates
- Glycerol
- Proteins (correct)
- Lipids
What are the basic building blocks of lipids?
What are the basic building blocks of lipids?
Enzymes function as biological catalysts. What is the primary role of a catalyst in metabolic reactions?
Enzymes function as biological catalysts. What is the primary role of a catalyst in metabolic reactions?
How does a significant increase in temperature typically affect enzyme function?
How does a significant increase in temperature typically affect enzyme function?
What is the most direct effect of changing the pH on enzyme function?
What is the most direct effect of changing the pH on enzyme function?
An experiment tests the effect of temperature on the rate of an enzyme-catalyzed reaction. Which of the following would be the independent variable?
An experiment tests the effect of temperature on the rate of an enzyme-catalyzed reaction. Which of the following would be the independent variable?
During an experiment, a student observes that an enzyme works most efficiently at a specific pH. What is this pH level referred to as?
During an experiment, a student observes that an enzyme works most efficiently at a specific pH. What is this pH level referred to as?
Why is it important to control pH and temperature when investigating enzyme activity?
Why is it important to control pH and temperature when investigating enzyme activity?
Flashcards
Elements in Carbohydrates
Elements in Carbohydrates
Carbohydrates contain carbon, hydrogen, and oxygen atoms.
Elements in Proteins
Elements in Proteins
Proteins contain carbon, hydrogen, oxygen, nitrogen and sometimes sulfur atoms.
Elements in Lipids
Elements in Lipids
Lipids (fats and oils) contain carbon, hydrogen, and oxygen; but have a different ratio than carbohydrates.
Carbohydrate Structure
Carbohydrate Structure
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Protein Structure
Protein Structure
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Lipid Structure
Lipid Structure
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Enzymes
Enzymes
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Temperature Effect on Enzymes
Temperature Effect on Enzymes
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pH Effect on Enzymes
pH Effect on Enzymes
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Study Notes
- Carbohydrates, proteins, and lipids contain carbon, hydrogen, and oxygen
- Proteins also contain nitrogen and sometimes sulfur
Carbohydrates
- Carbohydrates are large molecules
- They are made of smaller, basic sugar units
- Starch and glycogen are formed from simple sugars
Proteins
- Proteins are large molecules
- They consist of amino acids
Lipids
- Lipids (fats and oils) are large molecules
- Lipids are made up of fatty acids and glycerol
Food Tests
- Glucose can be tested for in food samples
- Starch can be tested for in food samples
- Protein can be tested for in food samples
- Fat can be tested for in food samples
Enzymes
- Enzymes are biological catalysts
- They speed up metabolic reactions
Temperature Effects on Enzymes
- Changes in temperature affect enzyme function
- Increased temperatures can change the shape of the active site, denaturing the enzyme
Investigating Temperature Effects
- Enzyme activity changes as temperature changes
pH Effects on Enzymes
- Changes in pH affect enzyme function
- pH changes can alter the active site
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