Science mar 11 Flashcards
What are the building blocks of proteins?
Amino acids
True or False: Lipids are soluble in water.
False
What type of bond connects amino acids in a protein?
Peptide bond
Fill in the blank: Carbohydrates are primarily made up of carbon, hydrogen, and _____.
Oxygen
Which of the following is a simple carbohydrate? (a) Starch (b) Glucose (c) Glycogen
b) Glucose
What is the primary function of lipids in the body?
Energy storage
What are the two main types of carbohydrates?
Simple carbohydrates and complex carbohydrates
True or False: Proteins can function as enzymes.
True
What is a common example of a saturated fat?
Butter
What type of carbohydrate is cellulose?
Complex carbohydrate
What bond is formed between fatty acids and glycerol in lipids?
Ester bond
Which amino acid is considered essential and must be obtained from the diet?
Lysine
Fill in the blank: The primary energy source for the brain is _____.
Glucose
What is the function of phospholipids in cell membranes?
To form a bilayer that serves as a barrier
Which of the following is a polysaccharide? (a) Sucrose (b) Lactose (c) Starch
c) Starch
What is the process called when proteins lose their three-dimensional structure?
Denaturation
True or False: All lipids are fats.
False
What are triglycerides composed of?
Glycerol and three fatty acids
Which type of bond is found in the secondary structure of proteins?
Hydrogen bonds
Fill in the blank: Glycogen is a storage form of _____ in animals.
Glucose
What is the role of enzymes in biochemical reactions?
To speed up reactions
What type of lipid is cholesterol?
Steroid
Which carbohydrate is commonly known as table sugar?
Sucrose
True or False: Unsaturated fats are generally liquid at room temperature.
True
What is the main function of carbohydrates in living organisms?
To provide energy
Which of the following is a characteristic of proteins? (a) They are made up of nucleotides (b) They can catalyze reactions (c) They are solely made of sugars
b) They can catalyze reactions
What bond connects the sugar and phosphate in a nucleotide?
Phosphodiester bond
