Question

tails intracellular environment (inside the cell) select the true statements. oxygen, a small nonpolar molecule, can freely pass through the lipid bilayer. positively charged sodium ions can freely pass through the lipid bilayer. the inner core of the lipid bilayer attracts polar molecules like water. the outer parts of the lipid bilayer attract polar molecules like water.

Explanation:

• Oxygen, a small nonpolar molecule, can freely pass through the lipid bilayer: Lipid bilayers are permeable to small non - polar molecules like oxygen. Non - polar molecules can dissolve in the non - polar lipid tails of the bilayer and diffuse through.
• Positively charged sodium ions can freely pass through the lipid bilayer: Lipid bilayers are impermeable to ions (like sodium ions). Ions are charged and polar, and the non - polar interior of the lipid bilayer repels them.
• The inner core of the lipid bilayer attracts polar molecules like water: The inner core of the lipid bilayer is made of non - polar lipid tails. Non - polar regions repel polar molecules like water.
• The outer parts of the lipid bilayer attract polar molecules like water: The outer parts of the lipid bilayer are made of polar lipid heads. Polar regions can interact with polar molecules like water through electrostatic and hydrogen - bonding interactions.

Answer:

• Oxygen, a small nonpolar molecule, can freely pass through the lipid bilayer.
• The outer parts of the lipid bilayer attract polar molecules like water.