Question

a scientist was studying how cell structures interact as a system to maintain homeostasis and mistakenly forgot to label her cell samples as shown in the data table. she observed cell samples of human cell bacteria, and a fern. she marked the table yes when structures were present and no when they were not.
which correctly identifies each cell type based on the data?
cell structure
sample a cells
sample b cells
sample c cells
cell membrane
cell wall
chloroplasts
nucleus
ribosomes
lysosome
sample a
e. coli bacteria
sample b
human skin
sample c
tree fern

Explanation:

• Sample A (E. coli bacteria): Bacteria are prokaryotes. Prokaryotes have a cell membrane, ribosomes (for protein - synthesis), and may have a cell wall (in the case of E. coli). They lack a nucleus (no membrane - bound organelles like a nucleus, lysosomes, or chloroplasts).
• Sample B (human skin): Human cells are eukaryotic animal cells. They have a cell membrane, nucleus (for storing genetic information), ribosomes. Animal cells lack a cell wall and chloroplasts. Lysosomes (for digestion of waste within the cell) are present in animal cells.
• Sample C (tree fern): Plant cells (tree fern is a plant) are eukaryotic. They have a cell membrane, cell wall (for structure and protection), ribosomes. Plant cells (unless they are non - photosynthetic parts like root cells) have chloroplasts (for photosynthesis). Ferns (being plants) are not animals, so they lack lysosomes (which are more characteristic of animal cells).

Answer:

A. Sample A: E. coli bacteria; Sample B: human skin; Sample C: tree fern.