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Hesi Exam

Biology section

QuestionAnswer
What is most significant about water? Polarity of its bonds
What does the high specific heat do to water? Allows water resist shifts in temperatur.
What is specific heat? The amount of heat necessary to raise the temperature of 1gram by 1 degree celcius
What does hydrogen bonding do? Results in high cohesive and adhesive bonding
What is Cohesion Ability of a molecule to stay bonded or attracted to another molecule of the same substance
What else can water act as? A versatile solution
What are the four most importan biological molecules? Carbrohydrates, Lipids, Proteins, Nucleic Acids
Long chains of polymers of sugars are what? Carbrohydrates
What are the most important functions of Carbrohydrates? Storage, Structure, Energy
What are lipids Fatty acids, Phospholipids, and Steroids
What are the 2 types of fatty acids Saturated and Unstaturated
Which fatty acid has no double bond in its hydrocarbon tail? Saturated
Which fatty acid is liquid at room temperature Unsaturated
Which fatty acid is associated with cardiovascular disease Saturated
Which fatty acid has one or more double bonds in its hydrocarbon tail? Unsaturated
Which fatty acid is a solid? Saturated
Consist of two fatty acids of varying lenght bonded to a phosphate group? Phosolipids
What charge is the phosphate group of a phosolipid? Polar
What is the polarity of a hydrocarbon tale of a fatty acid or phosolipid? non-polar
What does the phosolipid do? forms a barrier to protect the cell
What is the most significant contributor to cellular function? Proteins
What is a polymer of 20 molecules(amino acids) Proteins
What is the largest biological molecule Proteins
What types of proteins act to catalyze different reactions or processes? Enzymes
What contains the code for rplication DNA
What is used to transfer and as a messenger in most species of the genetic code? RNA
What are the componants of molecules of inheritance? Nucleic Acids
Created by: bturner
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