Bio Exam Practice pt.1

What is the biological importance of carbon?

• It's essential for breaking ionic bonds in salts to free the ions

• It serves as the backbone of organic molecules

• It is the key component of water and organic molecules

• It is a fundamental part of amino acids, and nucleic acids

Draw and label a carbon atom

Biological importance of water (select all that apply)

• water has a high surface tension

• water is compartmentalized

• water acts as a solute

• water has a high boiling point

How does a hydrogen bond form?

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What nature allows water to have partial negative charge and positive charge?

• Ionic nature

• Covalent nature

• Polar nature

• Intracellular nature

What is the difference between a saturated fatty acids and an unsaturated fatty acid

• Saturated has one single ionic bond while unsaturated has double bonds

• Saturated has one single covalent bond while unsaturated has double bonds

• Saturated has 2 covalent bonds while unsaturated has more than 2 bonds

• Saturated has no covalent bond while unsaturated has covalent bonds

Why is the cell membrane described as a fluid mosaic model?

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Describe the membrane's permeability

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A type of passive transport where the movement of molecules diffuse unassisted, no energy required

• Simple Diffusion

• Osmosis

• Facilitated Diffusion

Describe the primary and secondary active transports

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