Over a million students use our free study notes to help them with their homework
Biconcave shape- Increases the surface area of the red blood cell, meaning there is a greater surface over which diffusion of the gases being exchanged can occur (CO2/ O2).No nucleus- Allows red blood cel...
Exams such as GCSEs and A-Levels are all about ticking off boxes and jumping through hoops. The English education system is designed in such a way that it is best to approach English exams in regard to th...
Protein synthesis consists of two stages- transcription and translation. Transcription takes place in the nucleus- this is where a strand of mRNA is formed. A section of DNA is unwound by...
An empirical formula is the simplest whole number ratio of atoms of each element present in the compound.1) Divide by atomic relative mass to find the number of moles. 2) Find a ratio between the moles. 3...
Answer: Most of the atom's mass must be concentrated in a small area at the centre of the atom. This is known as the nucleus.
←
1576
1577
1578
1579
1580
→
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
