What Is DNA
Grade 7 · Science · Genetics and Heredity · Arkansas, USA
Lesson Summary
Discover the molecule that contains the instructions for building and running every living thing.
Explanation
DNA (deoxyribonucleic acid) is a long, twisted molecule found inside the nucleus of almost every cell. It is shaped like a double helix—imagine a twisted ladder. The rungs of the ladder are made of pairs of chemicals called bases: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). The specific order of these bases forms a code that tells cells how to make proteins, which do most of the work in your body.
Practice Questions
Q1: What shape is a DNA molecule?
Answer: DNA is shaped like a double helix, which looks like a twisted ladder.
Q2: In DNA, adenine always pairs with which base?
Answer: Adenine (A) always pairs with thymine (T).
Q3: Where in the cell is DNA located?
Answer: DNA is located inside the nucleus of the cell.
People Also Ask
What is What Is DNA in Grade 7 Science?+
What Is DNA is a lesson in the Genetics and Heredity chapter of Grade 7 Science. It is part of the Arkansas, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers What Is DNA?+
What Is DNA is taught in Grade 7 as part of the Science curriculum in Arkansas, USA.
How can I help my child with Genetics and Heredity in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Genetics and Heredity topics.