Question

james is making models of plant and animal cells using objects supplied by his teacher to represent organelles. for one cell, he will place the objects in a shoebox. first he fills a balloon with water and places it in the shoebox. he also drops a handful of marbles into the box.
which statement most likely describes the structures he has represented so far?
he is making an animal cell. the box is the cell membrane, and the balloon represents the large vacuole. the marbles are the endoplasmic reticulum.
he is making a plant cell. the box is the cell wall, and the balloon represents the large vacuole. the marbles are the tiny ribosomes.

Explanation:

• Plant cells have a cell wall (represented by the box), a large vacuole (represented by the balloon filled with water), and ribosomes (small structures like marbles). Animal cells do not have a large central vacuole (animal cells have small vacuoles) and do not have a cell wall.
• The endoplasmic reticulum is a network - like structure, not small round objects like marbles. Ribosomes are small and can be represented by marbles.

Answer:

He is making a plant cell. The box is the cell wall, and the balloon represents the large vacuole. The marbles are the tiny ribosomes.