Biology for Lifelong Learners!

Biology is the study of living organisms and consists of various branches from animal physiology to cell and developmental biology. Here at Moosmosis, our original biology lessons are created to engage lifelong learners of all age. Created by students, for students!

Circulatory System: Blood Flow Pathway Through the Heart

Circulatory System: Heart Structures and Functions

Ductus Arteriosus Vs Ductus Venosus Vs Foramen Ovale: Fetal Heart Circulation

Cardiac Arrhythmias: Definition, Types, Symptoms, and Prevention

Upper Vs Lower Respiratory System: Upper vs Lower Respiratory Tract Infections

Seven General Functions of the Respiratory System

Digestive System Anatomy: Diagram, Organs, Structures, and Functions

Kidney Embryology & Development: Easy Lesson

Psychology 101: Crowd Psychology and The Theory of Gustave Le Bon

Biology Unit 1 Study Guide: Ecology and Scientific Method
Biology Unit 2 Study Guide: Basic Building Blocks of Life
BIOLOGY UNIT 4 Study Guide: Genetics, MeisosiS, DNA, and Protein Synthesis
BioLogy Unit 5 Study Guide: EVOLUTION


Characterstics of Living Things & The Origin of Life

What makes something living? What are the characteristics of living things? All life has a common origin, but how do we know? This lesson examines various characteristics that define life and the origin of life.

Robert Hooke Comic - Copyright

Cornerstones of Microbiology: Famous Biologists

Hop on board to time travel back to the mid 1600s, and discover more about our famous biologists: Robert Hooke, also known as Isaac Newton’s fun-loving contemporary rival, and Anton van Leeuwenhoek, the Father of Microbiology.


The Size Scales of Biology

This lesson discusses the size scales relevant to cell biology, from the sizes of bacteria to eukaryotic organelles.


Light Microscopes, IMF, GFP

Telling the difference between light microscopes, electron microscope, indirect immunofluorescence (IMF), and green fluorescent protein (GFP).


Cell Membrane Fluidity

The cell membrane is a mosaic and fluid structure. This lesson elucidates the difference between fluidity and flexibility of the cell membrane, and the factors that affect membrane fluidity.


Transcription in Basics: Start and Stop

In biology, the central dogma is the scientific idea that describes the process of transcription and translation. Transcription is the process of making mRNA from DNA. It is also known as RNA synthesis.


Transcription in Bacteria

What makes transcription in bacteria unique? This lesson explains how transcription in bacteria works and the role of sigma factors during the process.


Gene Mutations in Dosophila Embryogenesis

The Drosophila has a distinct segmental pattern formed by specific genes. These genes include gap, pair rule, and segment polarity genes, to name a few. We will discuss the importance of these genes and their mutations.


Introduction to Evolution

What comes to mind when we think of evolution? Perhaps, Charles Darwin? Finches?Explore the humble beginnings of the Theory of Evolution, its history, and the scientists who helped make it!


Natural Selection and Darwin’s Finches

This section examines natural selection and Darwin’s famous finches in action. Dive into the islands of Daphne Major with the famous British naturalists, the Grants.

Greater short-nosed fruit bat (Cynopterus sphinx)

How to Interpret a Phylogenetic Tree

Did someone say phylogeny? The evolutionary tree is a diagram that often displays the vast history of lineages and ancestors that have lead to the rise of its descendants. We will explore a quick 5-step guide on interpreting phylogenetic trees and their basics.


Platypuses in Evolution and Phylogeny

Meet our duck-billed friend the platypus as we dive more into evolution and phylogeny. As mammals, are platypuses more primitive and less advanced than us humans? Common evolutionary tree interpretation mistakes such as ladder thinking will also be reviewed.

Human Embryonic Stem Cell

Endoderm vs. Mesoderm vs. Ectoderm

Our bodies generated from three main germ cell layers, endoderm, mesoderm, and ectoderm, but what are the differences?  In this lesson, we will explain the differences among the layers and easy mnemonics to help you remember them.

Moosmosis Lung Pun Comic_ We Belung together

Respiratory System: Differences Between Left Lung vs. Right Lung 

Right lung. Left lung. What are the differences between our lungs? In this lesson, we will discuss important differences between the left lung and right lung, including structure, lobes, size, and more.


Respiratory System: Seven General Functions 

Breathe in. Breathe out. It feels good to breathe, and we have our respiratory system to thank for that! In this lesson, we will discuss about our respiratory system and its seven general functions from gas exchange to acid-base balance.


Digestive System: Intracellular vs Extracellular Digestion

If I just ate an apple and it’s sitting in my stomach right now, is intracellular or extracellular digestion occurring? In this lesson, we will explore our digestive system’s intracellular and extracellular digestion.


 Circulatory System and Blood Flow

An intricate system of vessels – we will take you on a journey from the vena cava to the aorta and to the body and back. Oxygenated and deoxygenated blood, along with the anatomy of the human fetus’s heart, will be examined.

Moosmosis’s biology lessons reflect the content and level of Campbell Biology and Essential Cell Biology, Edition 3. Campbell and Essential Cell Biology are canonical biology textbooks, often utilized at the high school and university level. 

© Moosmosis 2018: All Rights Reserved

11 replies »

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    Liked by 1 person

    • Thank you, Mattrajohpolis. Awesome that you’re enjoying our site and Quizlet class. Thanks also for your dedication to learning and study sets, too! 😀


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