Biology

Try it Yourself 12 Tracks 56 Concepts 11 hr 6 min of learning

CodePLU Goal

Upgrading Human Mental Models

Learn how to think in Workflows

Biology Preview

Water loops, energy does not

The water cycle closes back on itself forever. Energy in a food chain travels one way and runs out — which is why food chains are short.

Drag nodes and connect the flow to understand the concept

Tracks In This Category

How the Living World Connects

4 parts 48 min Beginner

1 How Does Water Move Around the Planet?

2 How Do Plants Make Their Own Food?

3 Where Does the Energy in a Food Chain Come From?

4 What Happens When One Species Disappears?

How a Plant Is Built, and What Each Part Is For

3 parts 30 min Beginner

1 What Are the Parts of a Plant, and What Does Each One Do?

2 What Are the Parts of a Flower, and How Do They Make a Seed?

3 How Does a Seed Become a Plant?

What Everything Living Is Made Of

5 parts 1 hr Beginner

1 What Is a Cell, and What Does Each Part Do?

2 Plant Cell or Animal Cell — What Tells Them Apart?

3 What Does the Cell Membrane Let Through?

4 What Does the Nucleus Actually Hold?

5 Bacteria Have No Nucleus — So What Do They Have?

What Gets In and Out of a Cell

4 parts 48 min Beginner

1 What Is Diffusion, and Why Does It Stop?

2 What Is Osmosis, and Why Does It Only Move Water?

3 Why Does a Cell in Pure Water Burst but a Plant Cell Does Not?

4 When Does a Cell Have to Spend Energy to Move Something?

When Cells Take On a Job

5 parts 1 hr Beginner

1 Why Does a Big Organism Need Tissues at All?

2 Where Does a Plant Actually Grow From?

3 Xylem and Phloem: Two Pipes Going Opposite Ways

4 What Lines, Covers and Holds an Animal Together?

5 Muscle and Nerve: the Two Tissues That Act

Sorting the Living World

5 parts 1 hr Beginner

1 Why Do We Classify Living Things?

2 Kingdom to Species: the Ladder of Names

3 Why Does Every Species Get Two Names?

4 The Five Kingdoms, and What Separates Them

5 Where Does a Virus Fit? It Does Not

The World Too Small to See

5 parts 1 hr Beginner

1 What Counts as a Microorganism? Not One Group

2 How Do Microbes Multiply So Fast? Follow the Doubling

3 How Does a Mould Feed and Spread? Label the Parts

4 The Microbes We Could Not Live Without

5 How Do We Stop Microbes Growing? Kill or Slow

Why We Fall Ill

5 parts 1 hr Beginner

1 What Actually Makes You Ill? Not Always Germs

2 How Does a Pathogen Reach a New Host? Six Steps

3 What Happens When a Pathogen Gets In? Trace It

4 Two Ways to Fight an Infection — Eat or Mark

5 Why Do You Only Get Chickenpox Once? Memory Cells

How a Plant Feeds Itself

5 parts 1 hr Beginner

1 What Is Inside a Leaf? Six Layers, Six Jobs

2 How Does a Stoma Open and Close? Follow the Water

3 What Limits How Fast a Plant Photosynthesises?

4 How Do You Prove a Leaf Made Starch? Six Steps

5 Why Does a Plant Need Minerals Too? Sort It Out

Where Living Things Get Their Energy

5 parts 1 hr Beginner

1 Breathing Is Not Respiration — Sort Them Out

2 Why Must Every Cell Respire? Follow the Reasoning

3 What Is Inside a Mitochondrion? Label the Folds

4 Respiring With and Without Oxygen — Two Routes

5 Do Plants Respire As Well? Yes, Day and Night

How Living Things Make More of Themselves

5 parts 1 hr Beginner

1 One Parent or Two? The Two Ways to Reproduce

2 How Does One Cell Become Two? Mitosis in Order

3 Why Do Gametes Carry Half? Follow the Arithmetic

4 Making More Without a Partner — Four Methods

5 Why Have Two Parents At All? Variation Is Why

Why You Look Like Your Parents

5 parts 1 hr Beginner

1 What Is an Allele? Two Copies, Possibly Different

2 Why Can a Gene Be Carried Without Showing?

3 How Do You Predict What the Offspring Get?

4 Dominant Does Not Mean Common — Two Questions

5 Is It the Genes or the Surroundings? Sort It Out