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Biochemistry with Dr. Khaled Elshamanhory: Isotopes, Bonds, Vitamins, pH

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Biochemistry with Dr. Khaled Elshamanhory: Isotopes, Bonds, Vitamins, pH

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Questions and Answers

What is the function of proteins in the body?

Act as cell membranes

Convert light energy into chemical energy

Speed up chemical reactions as catalysts (correct)

Store genetic information

Which type of bond is responsible for the rise of water in trees?

Van Der Waals forces

Hydrogen bond (correct)

Covalent bond

Ionic bond

What is the effect of high levels of cholesterol in the body?

Improved memory function

Boosted metabolism

Increased risk of atherosclerosis (correct)

Enhanced muscle growth

What type of molecules are classified as water-soluble and hydrophilic?

Salts (B) Signup and view all the answers

What is the final product of aerobic cellular respiration?

ATP (B) Signup and view all the answers

Which process occurs in the absence of oxygen?

Fermentation (A) Signup and view all the answers

Which pH value indicates a base?

8 (C) Signup and view all the answers

What is the main energy source in the form of a monosaccharide?

Glucose (D) Signup and view all the answers

What is the role of the active site in enzymes?

Interact with specific substrates (D) Signup and view all the answers

Which type of fatty acids are found in plant oils?

Unsaturated fatty acids (C) Signup and view all the answers

Which process involves breaking down polymers into monomers?

Catabolism (C) Signup and view all the answers

What type of bond is responsible for the hydrogen bonding in water?

Hydrogen bond (C) Signup and view all the answers

Which molecule is used for glucose storage in animals?

Glycogen (A) Signup and view all the answers

What is the main function of wax in plants?

Preventing water loss (A) Signup and view all the answers

In which environment would a water-soluble vitamin be most stable?

Water-based environment (A) Signup and view all the answers

What is the function of cholesterol in the cell membrane?

Hold the cell membrane together (A) Signup and view all the answers

What is the role of NAD+ and FAD in cellular respiration?

Transport high energy electrons (B) Signup and view all the answers

What happens to proteins when they undergo denaturation?

They lose their specific active site (B) Signup and view all the answers

What is the main function of enzymes in biochemical reactions?

Speed up reactions (C) Signup and view all the answers

Where does the Krebs cycle take place in the cell?

Mitochondrial matrix (C) Signup and view all the answers