Over a million students use our free study notes to help them with their homework
Immunisation introduces a specific antigen into the body. This is recognised as foreign and stimulates B lymphocytes to produce plasma cells and memory cells. Plasma cells go on to secrete specific antib...
The two types of nucleic bases are purines and pyrimidines. The purines are adenine and guanine, and the pyrimidines are cytosine and thymine. Purines always bond with pyrimidines and in DNA, adenine and ...
thicker waxy cuticles rolled up leaves stomata in pits
Independent Variable - this is the variable which is being changed and manipulated by the scientist in order to test its impact on other variablesDependent Variable - this is the variable which is being m...
Three types of carbohydrates: 1. Monosaccharide. "Mono" means one. Contains one sugar monomer. 2. Disaccharide. "Di" means two. Contains two sugar monomers. 3. Polysaccharide. "Po...
←
154
155
156
157
158
→
Internet Safety
Payment Security
Cyber
Essentials
