BIO - H: Macromolecules Quizs

During __________________, one water molecule is removed and two monomers are bonded together.

• Hydrolysis

• Dehydration Synthesis

Answer explanation

During Dehydration Synthesis, a water molecule is removed to bond two monomers together, forming a larger molecule. This process contrasts with Hydrolysis, where water is added to break bonds.

What type of macromolecule is shown?

• Lipid

• Protein

• Nucleic acid

• Carbohydrate

Answer explanation

The macromolecule shown is a protein, which is composed of amino acids and plays crucial roles in biological functions, including catalyzing reactions and providing structural support. This distinguishes it from lipids, nucleic acids, and carbohydrates.

Lily observed that ducks and otters, which live in wet environments, secrete an oil that waterproofs their fur or feathers. This oil is classified as which type of macromolecule?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

Answer explanation

The oil secreted by ducks and otters is a type of lipid, which is known for its hydrophobic properties that help waterproof fur and feathers. Therefore, the correct answer is lipids.

Which of the following pairs is NOT correctly matched?

• Carbohydrates - Sugars & Starches

• Lipids - Fats & Oils

• Proteins - Blubber

• Nucleic Acids - DNA & RNA

Answer explanation

The pair 'Proteins - Blubber' is not correctly matched because blubber is a type of fat found in animals, not a protein. The other pairs correctly associate the macromolecules with their respective components.

During __________________, one water molecule is added and two monomers are separated.

• Hydrolysis

• Dehydration Synthesis

Answer explanation

During hydrolysis, a water molecule is added to break down polymers into monomers, effectively separating them. This process contrasts with dehydration synthesis, where water is removed to join monomers.

In a biology class, James and Abigail are learning about macromolecules. Their teacher asks them which biological macromolecule includes glucose, fructose, starch, and glycogen? What is their answer?

• Lipids

• Carbohydrates

• Nucleic Acids

• Proteins

Answer explanation

The correct answer is carbohydrates, as glucose and fructose are simple sugars, while starch and glycogen are complex carbohydrates. All these compounds are classified under the macromolecule category of carbohydrates.

Which molecule is a type of lipid involved in long term energy storage?:

• Triglycerides

• Polypeptide Chains

• DNA

• Polysaccharides

Answer explanation

Triglycerides are a type of lipid that store energy long-term in the body. They consist of three fatty acids attached to a glycerol backbone, making them efficient for energy storage compared to other molecules.

Two monosaccharides bond together to form a ________.

• Polypeptide

• Disaccharide

• DNA

• Polysaccharide

• Amino Acid

Answer explanation

Two monosaccharides bond through a glycosidic linkage to form a disaccharide, which is a type of carbohydrate. This distinguishes it from polypeptides, DNA, polysaccharides, and amino acids.

Emma is studying cell biology and the structure of the cell membrane. Emma is asked what macromolecule forms the cell membrane. What is Emma's answer?

• Proteins

• Lipids

• Carbohydrates

• Nucleic acids

Answer explanation

The cell membrane is primarily composed of lipids, specifically phospholipids, which form a bilayer. This structure is essential for membrane fluidity and function, making lipids the correct answer.

The polymers of protein are:

• DNA

• Polypeptides

• Polysaccharides

• Triglycerides

• Nucleic Acids

Answer explanation

The polymers of proteins are polypeptides, which are chains of amino acids. Other options like DNA and nucleic acids are related to genetic material, while polysaccharides and triglycerides are types of carbohydrates and fats, respectively.