Brain Bee Study Guide: Free resources and study guide notes for Brain Bee competition students: Chapter 9 Kinds of Research
How did flightless birds evolve? How did the evolution of the shrinking cod come to be? In this lesson, we learn about the evolution of the flightless birds, such as cormorants, and the evolution of the shrinking cod in our biology selection case studies.
Differences between autocrine, paracrine, juxtacrine, and endocrine signaling. Quick easy lesson on Autocrine vs Paracrine vs Endocrine vs Juxtacrine Signaling.
Biology Unit 2 Study Guide: Basic Building Blocks of Life. Protein, lipid, nucleic acid, carbohydrate, properties of water, enzymes, organelles. With examples and answers to help make biomolecules easy to learn!
Lysosomal Storage Diseases: Tay-Sachs Disease vs Niemann-Pick DIsease: Similarities and differences for symptoms, causes, enzymes, biochemistry, inheritance, etc
Biology Unit 1 Study Guide: Ecology and Scientific Method, including Characteristics of Life, Biodiversity, Cycles of Matter, and Global Change. With examples and answers to help make ecology easy to learn!
In this lesson, we learn about the 3 shunts of fetal circulation: ductus arteriosus, ductus venosus, and foramen ovale of the fetal heart: functions, medical significance, when they close, medical complications, and remnant ligaments.
Common eye problems, diseases, and disorders – Quick and easy to learn diagram, definitions, and explanations for common eye diseases
How is glucose transported into the blood? How is glucose taken up by red blood cells? In this easy-to-understand lesson, we explain the processes behind these questions.
In this lesson, we explain about the biochemistry of glucose transporters GLUT and SGLT, their functions, and differences. Biochemistry, MCAT, and USMLE
In this quick and easy lesson, we explain the shoulder muscles responsible for abducting the shoulder, the anatomy, the degrees of arm abduction for each shoulder muscle, and the nerves that innervate the shoulder abduction muscles.
USMLE Lesson on Biochemistry Nutrition: Zinc Deficiency, the functions of zinc, including its role as zinc fingers transcription factor motifs, and zinc deficiency symptoms
In this lesson, we explain the differences between flippase, floppase, and scramblase. Flippase vs Floppase vs Scramblase as lipid transporters in the cell membrane with Quick and Easy Explanation
In this lesson, we explain what types of molecules can pass through the cell plasma membrane and what are the factors that determine whether a molecule can cross a cell membrane: Quick and Easy Explanation on the Cell Membrane
In this quick and easy lesson, we explain what is the Cori cycle, how the Cori cycle works, what is its clinical significance, and where is the Cori cyle located: MCAT and USMLE medicine.
In this lesson, we will explain the differences between the upper and lower respiratory system and the differences between upper respiratory tract infections and lower respiratory tract infections.
What is the difference between Kwashiorkor and Marasmus? USMLE protein-energy malnutrition diseases; we explain the differences, including causes, symptoms, comparative medical charts.
Circulatory system – order of blood flow through the heart; Step by step Pathway of Blood Flow Through the Heart; Quick and easy to learn in 14 steps
History biography summary of Anton Van Leeuwenhoek and Robert Hooke, including their discoveries, cell theory as Fathers of Microbiology
What are the differences between the left lung and right lung? Here, we detail quick and easy to learn summary points of the right lung vs left lung. Left vs Right Lung
What is the respiratory system? In general, the respiratory system is a biological system that contains organs and structures that assist in gas exchange. Gas exchange involves the movement of carbon dioxide and oxygen between our circulating blood and air. In this educational lesson, we explore seven general functions of our respiratory system.
From Superman and Wonder Woman to Captain America and Black Widow, every spectacular star-spangled superhero team seems to rock and roll with the teamwork of both the XY and XX chromosomes. While our world may not have the fantasy superhero team flying in the sky or wearing red […]
Intracellular Digestion vs Extracellular Digestion. What’s the Difference Between the Two Types of Digestion? In this article, we explore the definitions and difference between Intracellular and Extracellular Digestion.
Ectoderm, Endoderm, and Mesoderm: What do the 3 Germ Cell Layers Give Rise To? Definitions, Table, and Easy Mnemonics for the 3 Germ Cell Layers
Lovely, isn’t she? (Yes, the furry one above.) She’s Your 65-Million-Year-Old Mother. Through modern computer analysis and evolutionary data, Maureen O’Leary a researcher from Stony Brook University and her colleagues discovered the last known common ancestor of placentals (Scientific American). Modern placentals include animals such as whales, bats, […]