To determine which additional observation Alyssa is most likely to make, we need to analyze the given characteristics of the two cells, X and Y, and identify whether they align more closely with features of plant cells or animal cells. Let's break down the observations:
Cell X:
- Has a cell wall
- Shaped like a rectangle
- Has several organelles
Cell Y:
- Round shape
- Has a large nucleus
- Has ribosomes
First, let's discuss some defining characteristics of plant and animal cells:
1. Plant Cells:
- Have a cell wall.
- Often rectangular in shape.
- Contain chloroplasts (for photosynthesis).
- Have a large central vacuole.
- Also have many organelles, including a cell membrane, nucleus, ribosomes, etc.
2. Animal Cells:
- Do not have a cell wall.
- Typically round or irregular in shape.
- Do not have chloroplasts.
- Have several organelles, including a cell membrane, nucleus, ribosomes, etc.
Using these characteristics, we can infer the following:
Cell X:
- Since it has a cell wall and is rectangular, it is very likely to be a plant cell.
Cell Y:
- Given its round shape and the presence of a large nucleus, it is likely to be an animal cell.
Now, let's evaluate the possible additional observations:
1. Cell [tex]$X$[/tex] has a cell membrane, and Cell [tex]$Y$[/tex] does not.
- This is incorrect because both plant and animal cells have a cell membrane.
2. Cell [tex]$Y$[/tex] has a cell membrane, and Cell [tex]$X$[/tex] does not.
- This is also incorrect because both cell types have a cell membrane.
3. Cell [tex]$Y$[/tex] has chloroplasts, and Cell [tex]$X$[/tex] does not.
- This is incorrect because animal cells (Cell Y) do not have chloroplasts.
4. Cell [tex]$X$[/tex] has chloroplasts, and Cell [tex]$Y$[/tex] does not.
- This is correct because plant cells (Cell X) have chloroplasts, while animal cells (Cell Y) do not.
Thus, the most likely additional observation Alyssa will make is:
Cell [tex]$X$[/tex] has chloroplasts, and Cell [tex]$Y$[/tex] does not.
