Search over 10,000 free study notes

In skeletal muscle there exists a thick filament, myosin, and a thin filament, actin. For contraction both of these filaments need to interact causing a power stroke and muscle contraction. At rest, the m...

1. The Nucleus contains the DNA code for the amino acid sequence (2)
   3. The Nucleolus makes rRNA (4)
   5. The Ribosomes translate mRna in protein synthesis
   6. The endoplasmic reticulum all...

Water Potential is the measure of the ability of water molecules to move freely in solution. A solution of pure water where there is no solute and all of the water molecules are free to move, the water po...

1. Initially, the DNA is present in the form of a double helix, comprising 2 polynucleotide strands joined by hydrogen bonds between complementary bases. The enzyme helicase unwinds and separates the 2...

This is a form of movement of molecules. This is the movement of molecules from an area of low concentration to an area of high concentration (against the concentration gradient) across a membrane. As it ...