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def: water hatin

info: These are insoluble in water (then why are they afraid of it?) because all or almost all of their atoms are uncharged and non polar. They therefor can not form favorable interactions with water. (not that they would want to, as they be water hatin anyways)

Hydrophobic molecules force the water around them into a cagelike shape,which requires energy, of course. But if the hydrophobic molecules are closer together then the energy needed to cage the water is minamalized and can be done easier. This is why they stay so close together, especially around water. (So they can lazily cage water)


def: water lovin

info: these dissolve readily in water because they contain charged atoms or polar groups. (polar group= chemical groups with an uneven distribution of positive and negative charges, not a group of penguins and polar bears)

Heterochromatin (chapter 5)

def: Region of a chromosome that remains unusually condensed and transcriptionally inactive during interphase.

Histone (chapter 5)

def: One of a group of abundancy basic proteins, rich in arginine and lysine, that are associated with DNA in chromosomes to form nucleosomes.

Homologous Chromosome (chapter 6)

def: one of the two copies of a particular chromosome in a diploid cell, one from the father and one from the mother.

helicase (chapter 6)

def: a protein that uses the energy of ATP hydrolysis to pry apart the double helix as it speeds along the DNA

Hormone (chapter 16)

def: A chemical substance produced by one set of cells in a multicellular organism and transported via body fluids to target tissues on which it exerts a specific effect.

Hybridization (chapter 10)

def: Experimental process in which two complementary nucleic acid strands form a double helix; a powerful technique for detecting specific nucleotide sequences.

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