Which structure is found in plant cells but NOT in animal cells?
ANucleus
BCell membrane
CCell wall
DCytoplasm
The cell wall is a rigid outer layer found only in plant cells (and some other organisms like fungi and bacteria). It provides structural support. The nucleus, cell membrane, and cytoplasm are found in both plant and animal cells.
Question 2 True / False
Plant cells do not have a cell membrane because they already have a cell wall.
TTrue
FFalse
Answer: False
Plant cells have BOTH a cell wall and a cell membrane. The cell membrane sits just inside the cell wall. The wall provides rigid support, while the membrane controls what enters and exits the cell. Every living cell has a cell membrane.
Question 3 Short Answer
Why do plant cells have chloroplasts but animal cells do not?
Think about your answer, then reveal below.
Model answer: Chloroplasts are where photosynthesis happens — the process of making food from sunlight. Plants need chloroplasts because they make their own food. Animals get their food by eating other organisms, so they do not need chloroplasts.
This connects cell structure to organism function. The presence or absence of chloroplasts reflects the fundamental difference in how plants and animals obtain energy. Structure serves function — a recurring theme in biology.