Over a million students use our free study notes to help them with their homework
Coronary heart disease involves the arteries supplying the heart, known as the coronary arteries. There are two arteries namely the left and right coronary arteries. Healthy coronary arteries are nice and...
Most animal cells have:A nucleus (DNA is stored)Ribosomes (proteins are made)Mitochondria (ATP is produced for energy)Cytoplasm (most chemical reactions take place here)Cell membrane (lets certain things ...
A heart attack occurs when the flow of blood through a coronary artery is blocked, preventing an area of heart muscle from being supplied with oxygen and nutrients. As a result, the heart's ability to pum...
Each kidney contains 1000s of nephrons and this is where a process called ultrafiltration occurs. Blood from the renal artery flows through the glomerulus at high pressure. The glomerulus is a bundle of c...
Both mitosis and meiosis are methods of cell division. Mitosis is cell division where the DNA of the parent molecule is duplicated then split into 2 identical daughter cells. Mitosis is split into 4 stage...
←
149
150
151
152
153
→
Internet Safety
Payment Security
Cyber
Essentials
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors for 300 subjects
35,000 worksheets, games, and lesson plans
Adaptive learning for English vocabulary
Fast and accurate language certification
Essential reference for synonyms and antonyms
Comprehensive resource for word definitions and usage
Spanish-English dictionary, translator, and learning resources
French-English dictionary, translator, and learning
Diccionario ingles-espanol, traductor y sitio de apremdizaje
Fun educational games for kids
