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Xerophyte adaptations include: Curled leaves - create a micro-climate of more humid surrounding air, hence less water is lost to the dry surroundings. Small hairs on leaves - slow surrounding air flow, th...

DNA helicase unwinds DNA by breaking H bonds between DNA strands. DNA polymerase joins adjacent nucleotides by forming phosphodiester bonds between them.

There are four stages of aerobic respiration- glycolysis, which takes place in the cell cytoplasm and the link reaction, Krebs cycle, and oxidative phosphorylation, which all occur in the mitochondria.Gly...

This can best be described as the second messenger model. Adrenaline is a hydrophillic hormone so it only acts on receptors on the cell surface membranes. The hormone fuses to the receptor site which then...

1. Growth / increase in cell number2. Replace cells / repair tissue / organs /body