Cell Organelles and Their Jobs (Part 4)

What You'll Learn

Mutations are changes in DNA sequence that can occur randomly. Most mutations have no effect, some are harmful, and a few may be beneficial and help a species adapt.

Key Words

fossil record
species
heredity

Steps

Step 1 — Read

Read and learn: Mutations are changes in DNA sequence that can occur randomly. Most mutations have no effect, some are harmful, and a few may be beneficial and help a species adapt.

Step 2 — Do

Gather your materials and set up your workspace.

Step 3 — Observe

Use your senses (except taste) to describe what you notice.

Step 4 — Record

Write a summary of your findings in 3-5 sentences.

Check Your Understanding

Question 1

1 of 3

What organelle produces energy for the cell?