Question

to break down waste

1. why don’t animal cells need a cell wall?

they don’t use energy
they have skeletons and muscles for support
they make their own food
they don’t take in water

Explanation:

To determine why animal cells don't need a cell wall, we analyze each option:

• "They don't use energy" is incorrect as all cells use energy.
• "They have skeletons and muscles for support" is correct because animals have internal/external skeletons and muscles to maintain structure, unlike plants which rely on cell walls.
• "They make their own food" is incorrect (animals are heterotrophic, plants are autotrophic).
• "They don't take in water" is incorrect (animal cells do take in water).

Answer:

The option "They have skeletons and muscles for support" (the second option in the list of choices for question 3).