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Glucose is absorbed by diffusion into the bloodstream./ Then blood delivers glucose to muscles in capilleries.

Any two from:acid in the stomach kills pathogens in food/ skin forms a barrier or produces antimicrobial secretions/ hairs in the nose trap pathogens/ trachea or bronchi has mucus which traps pathogens

DNA, or deoxyribonucleic acid, is a doubled-stranded helix made up of nucleotides. Each nucleotide has one of four bases attached to it. The bases of the nucleotides of one strand base pair to the complim...

Alleles give variation within the phenotype expressed by a particular gene. Let's use the ability to roll the tongue as an example. Individuals can either roll their tongue, or not, and this is controlled...

Diffusion is a passive process whereby molecules move from areas of high to areas of low concentration, down the concentration gradient. Osmosis is also a passive process however only refers to movement o...