Question

question #19
two students observe a cell under a microscope and list several characteristics in a table.
based on the characteristics, how is the cell classified?
a the cell is a bacterial cell because it contains vacuoles.
b the cell is a plant cell because it contains both a cell wall and chloroplasts.
c the cell is a protist because there is one large vacuole.
d the cell is an animal cell because the genetic material is enclosed within a nucleus
question #20
a student observes the slides of four different cells under a microscope and records the observations in the table.
based on the observations, which slide most likely contains a plant cell?
a slide 1
b slide 2
c slide 3
d slide 4

Explanation:

Question #19

Step1: Analyze each option

• Option A: Bacterial cells are prokaryotic (no nucleus) and usually have small vacuoles (if any). The cell in question has a nucleus (eukaryotic feature), so this is incorrect.
• Option B: Plant cells have a cell wall, chloroplasts (for photosynthesis), a large central vacuole (which pushes the nucleus to the edge), and a cell membrane. This matches the characteristics.
• Option C: Protist cells (like amoeba, euglena) don't typically have all these plant - specific features (cell wall, large central vacuole, chloroplasts in the context of a general protist)
• Option D: Animal cells don't have a cell wall or chloroplasts.

Question #20

Step1: Analyze each slide

• Slide 1: Irregular shape (animal cell characteristic) and small nucleus. Not a plant cell.
• Slide 2: Rectangular shape (due to cell wall) and a large cavity (vacuole) are plant cell features.
• Slide 3: Round shape (could be an animal cell, as animal cells are more rounded compared to plant cells which are often rectangular due to the cell wall)
• Slide 4: Absence of nuclear membrane (prokaryotic, like bacteria). Not a plant cell (plant cells are eukaryotic)

Answer:

Question #19: B. The cell is a plant cell because it contains both a cell wall and chloroplasts.
Question #20: B. Slide 2