Question

Read the following

All living organisms are made of cells, which are the basic units of life.
While cells come in many different forms, scientists classify them into three main categories: plant cells, animal cells, and bacterial cells. Plant cells and animal cells are both eukaryotic cells, meaning they contain a nucleus and other membrane-bound organelles. Bacterial cells, however, are prokaryotic cells, which lack a nucleus and have a simpler internal structure. Despite these differences.

all cells share certain characteristics, such as a cell membrane, cytoplasm, and ribosomes. Understanding the similarities and differences between cell types helps scientists better understand how different organisms
function and survive in their environments.

Data Table: Comparison of Cell Types
The Feature is cell membrane, the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is yes

The Feature is nucleus, the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is no.

The Feature is cell membrane, the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is yes

The Feature is cell wall, the Plant cell is YES (cellulose) , the Animal Cell is no and Bacterial Cell is yes ( peptidoglycan).


The Feature is cell membrane, the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is yes

The Feature is chloroplast, the Plant cell is YES , the Animal Cell is no and Bacterial Cell is no

The Feature is Mitochondria , the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is no

The Feature is ribosome, the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is yes

The Feature is cytoplasm , the Plant cell is YES , the Animal Cell is yes and Bacterial Cell is yes

Size plant cell is 10-100 um
size animal cell is 10-30 um
Size bacterial cell is 1-10 um

In a CER FORMAT in a 6th graders response

Answer the following

Claim: Write a statement that answers this question: How do the structures of plant cells, animal cells, and bacterial cells reflect their different functions in
organisms?

Evidence: Use at least three pieces of information from the passage and data table to support your claim. Explain what each piece of evidence shows about cell structure and function.

Reasoning: Explain why the structural differences between
these cell types matter. How do these differences help each type of cell perform its role in an organism?

Answer 1

Claim:
Plant cells, animal cells, and bacterial cells have different structures because each is built to do different jobs: plant cells are made to make food and stay rigid, animal cells are made to move and use lots of energy, and bacterial cells are small and simple so they can grow fast and live in many places.

Evidence:
- Nucleus: Plant and animal cells have a nucleus (YES) but bacterial cells do not (NO). This shows plant and animal cells are eukaryotic with a central control center for DNA and complex functions, while bacteria are simpler and do not store DNA in a nucleus.
- Chloroplasts: Only plant cells have chloroplasts (YES); animal and bacterial cells do not. This shows plant cells can do photosynthesis and make their own food from sunlight, which animal and bacterial cells cannot do.
- Cell wall differences: Plant cells have a cellulose cell wall (YES), animal cells do not (NO), and bacterial cells have a cell wall made of peptidoglycan (YES). This shows plant cells are rigid and supported (helps plants stand upright), animal cells are flexible (so animals can move), and bacteria have a different kind of wall for protection in many environments.
- Mitochondria and size: Plant and animal cells have mitochondria (YES) but bacteria do not. Also, bacterial cells are much smaller (1–10 µm) than plant (10–100 µm) and animal (10–30 µm) cells. This shows eukaryotic cells use mitochondria to make lots of energy for complicated tasks, while bacteria are small and rely on simpler ways to get energy and can reproduce quickly.
- Common parts: All three cell types have a cell membrane, cytoplasm, and ribosomes (YES). This shows every cell can control what enters and leaves, has fluid inside for reactions, and can make proteins.

Reasoning:
These structural differences matter because they let each cell type do what its organism needs. Plants need chloroplasts to turn sunlight into food and a strong cellulose wall to hold them up, so plant cells are large and rigid. Animals need to move and do many energy-demanding jobs, so they have mitochondria and no rigid wall so cells can change shape. Bacteria are small and lack a nucleus and mitochondria, which makes them simpler and able to reproduce and adapt quickly; their peptidoglycan cell wall protects them in many places. The shared parts (membrane, cytoplasm, ribosomes) let all cells keep their insides separate from the outside and make proteins, which is necessary for life no matter what type of cell it is.