Question

1. students are investigating living and nonliving organisms. the students observe objects that are found in a fish tank. they view each object with their eyes and then view a small sample from each object under a microscope. the picture shows the fish tank and their observations.

object viewable without microscope? cells present under microscope?
gravel yes no
fish yes yes
bacteria no yes
rock yes no
plastic coral yes no
plants yes yes
does the object move?
is the object made of cells?
does the object contain a nucleus?
is the object visible without a microscope?
clear all

Explanation:

Living organisms are made of cells. This is a fundamental characteristic of life. Non - living objects are not composed of cells. To distinguish between living and non - living organisms in the fish tank, checking for the presence of cells is key. Movement is not a definitive characteristic as some living things like plants don't move much and some non - living things can move (e.g., with water currents). Not all living things have a nucleus (e.g., bacteria are prokaryotes). Visibility without a microscope is not related to being living or non - living.

Answer:

Is the object made of cells?