c1w1L1 Biomolecules DOL

A researcher is investigating how cells adapt to high-energy demands, such as muscle cells during intense exercise. What feature of lipids makes them a suitable energy source for cells with high energy demands?

• Their ability to form hydrogen bonds with water

• Their dense storage capacity of energy in fatty acid chains

• Their role in forming rigid structures in the cell

• Their function in coding genetic information

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TX.112.42.C.5.A.

The cell walls of a plant consist mostly of cellulose, a carbohydrate, which provides a strong structure. The cell membrane gets its structure primarily from lipids, and embedded proteins allow for material transport. Which of the following elements would be found in the lowest amounts in both the cell wall and cell membrane?

• Carbon

• Oxygen

• Hydrogen

• Sodium

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TX.112.42.C.5.A.

Which of the following are functions of carbohydrates? Choose TWO correct answers.

• Carbohydrates carry oxygen in the blood.

• Carbohydrates form the structural components of cell walls in plants.

• Carbohydrates provide a quick source of energy.

• Carbohydrates serve as enzymes to speed up chemical reactions.

• Carbohydrates are used to store genetic information.

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TX.112.42.C.5.A.

Which of the following are functions of lipids? Choose THREE correct answers.

• Lipids form the exoskeletons of insects.

• Lipids form cell membranes.

• Lipids store energy in fat cells.

• Lipids form bones and cartilage.

• Lipids form waxy leaf coverings.

Tags

TX.112.42.C.5.A.

A biochemistry student isolates several of the same biomolecules from a culture of yeast. Analysis shows that the molecule is made up of several monosaccharides joined by covalent bonds. The student observes that when the molecules are joined to one another, a water molecule is released.

Match each statement the correct explanation related to the biomolecule the student has identified.

1. 1. ​ (a)   The type of biomolecule isolated​

2. 2. Why this biomolecule is important to the structure of a cell​ (b)  

3. 3. Why this biomolecule is important to the function of a cell​ (c)  

• Carbohydrate
• Lipid 
• Forms cell wall in plants and fungi
• Provides energy
• Stores genetic information
• Speeds up reactions
• Acts as a hormone
• Transports oxygen
• Nucleic Acid
• Makes up the cell membrane

Tags

TX.112.42.C.5.A.