Question

question #23
a student collects data about two types of cells and records the data in a table.
which inference about the cells is accurately supported with evidence?
a cyanobacteria and the maple leaf are classified similarly because both carry out the photosynthetic process.
b cyanobacteria and the maple leaf are classified similarly because both have cell membranes and cytoplasm.
c cyanobacteria and the maple leaf are classified differently because they differ in how they obtain their food.
d cyanobacteria and the maple leaf are classified differently because they differ in the locations of their genetic materials.

Explanation:

• Option A: Cyanobacteria are prokaryotes and maple leaf cells are eukaryotes. They are not classified similarly. Just because both have chlorophyll (for photosynthesis) doesn't mean they are classified the same. Classification in biology (especially at higher taxonomic levels like domain - prokaryote vs eukaryote) is based on more fundamental differences like cell structure (presence/absence of membrane - bound organelles).
• Option B: All cells (prokaryotic and eukaryotic) have cell membranes and cytoplasm. But cyanobacteria (prokaryote) and maple leaf cells (eukaryote) are not classified similarly. Classification is based on more significant differences like the presence of a nucleus and membrane - bound organelles.
• Option C: Both cyanobacteria and maple leaf cells are autotrophs. Cyanobacteria perform photosynthesis (using chlorophyll as shown in the table) and maple leaf cells also perform photosynthesis (as they have chlorophyll). So, they do not differ in how they obtain food (both are photosynthetic autotrophs).
• Option D: Cyanobacteria (prokaryote) have their genetic material (DNA) in the cytoplasm (no nucleus), while maple leaf cells (eukaryote) have their genetic material inside a membrane - bound nucleus. This is a fundamental difference in cell structure (prokaryote vs eukaryote) which is a basis for different classification.

Answer:

D. Cyanobacteria and the maple leaf are classified differently because they differ in the locations of their genetic materials.