B1.1.1 Carbs and Lipids

1. What is the key element in biological molecules?

• Oxygen
• Nitrogen
• Carbon
• Hydrogen

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NGSS.HS-LS1-6

NGSS.HS-LS2-5

2. Which of the following is NOT a reason carbon is well-suited for building biological molecules?

• It can form four stable covalent bonds.
• It can bond with itself and other elements.
• It has a low atomic mass.
• It allows for diverse and complex molecular structures.

3. What is a covalent bond?

• A bond formed by the transfer of electrons.
• A bond formed by the sharing of electrons.
• A bond formed by electrostatic attraction.
• A bond formed by the attraction of ions.

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NGSS.HS-PS1-1

4. Which types of structures can carbon form in biological molecules?

• Only linear chains.
• Only ring structures.
• Both chains and rings.
• Only branched structures.

5. Which of the following is an example of a biological molecule that contains carbon?

• Water
• Sodium chloride
• Carbohydrates
• Minerals

6. What is the significance of carbon's bonding capabilities?

• It creates simple, unstable structures.
• It forms the backbone of essential biological molecules.
• It only forms ionic bonds.
• It limits the variety of biological molecules.

7. Carbon's ability to form four covalent bonds allows it to:

• Dissolve easily in water.
• Form large, complex molecules.
• Easily lose electrons.
• Act as a strong oxidizing agent.

Tags

NGSS.HS-LS1-6

8. Which of the following is a characteristic of carbon's bonding that makes it ideal for biological molecules?

• It forms weak, temporary bonds.
• It forms strong, stable bonds.
• It only forms bonds with metals.
• It forms bonds that are easily broken.

Tags

NGSS.HS-LS1-6

9. Saturated fatty acids are an example of a carbon structure that forms:

• Rings
• Chains
• Cubes
• Spheres

10. Monosaccharides, such as glucose, typically form which type of carbon structure?

• Chains
• Rings
• Sheets
• Fibers