Draw a Water molecule with its polarity
h-O-h
neg on O
+ on H
bent,
What are the three parts to the atom and their charges?
neutron - nothing
electron - neg
proton - pos
what process is happening?
Dehydration synthesis to go from monosaccharide to a disaccharide.
What are the 5 nitrogen bases?
U, A, T, C, G
What is the monomer for a protein and what bond do they make between the monomers?
Amino Acids
peptide
What makes water polar?
electrons are not evenly shared
What element is the building block for carbs, proteins, lipids and N.A? It is in all cells
why?
Carbon
can form 4 bonds, very strong
What is hydrolysis?
A chemical reaction in which water is used to break down a compound; this is achieved by breaking a covalent bond in the compound by inserting a water molecule across the bond.
Structure of Lipids
Glyceral Head / Fatty acid chains
What are the 3 parts that make up the monomer of a protein?
Amino group
R group
Carboxyl group
Why is water the universal solvent?
Can seperate many molecules due to its poles like salt, sugar, etc.
What are the 4 main Macro Molecules?
Carbohydrates
Proteins
N.A.
Lipids
In a dehydration reaction, _____ are linked together to form _____.
monomers, polymers
Difference between Saturated vs unsaturated lipids, examples of each
Oil - un
butter - sat.
All bonds are filled with H on the fatty acid chains
What part of the monomer can have properties that are hydrophobic, hydrophilis or ionic?
R group
What causes water's surface to have tension?
The bonds between the molecules are strong
covalent, don't want to breaktakes a lot of heat or movement to break seal
What is the monomer of a complex carbohydrate?
sugar, glucose
Cohesion vs. adhesion
Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.
Describe how lipids help the cell
Phosolipid bilayer - nonpolar molecules
hydrophobic tails that are nonpolar and hydrophilic heads that interact with water because they are polar
Describe the different structures of proteins
1. primary - single strand A.A. peptide bonds
2. secondary - sheets or helix
3. 3D structure - R groups interacting - S bonds, hydrophobic rings
4. multiple strands put together
Why does water have a pH of 7?
Even amounts of H+ ions and OH- ions. = 0 which is pH of 7. neutral
Nucleotide is a monomer. What are the parts of a nucleotide?
phosphate
nitrogen base
Mono - 1 ring - glucose, fructose
Di - 2 rings - sucrose
Poly - starch, pasta,
Compare and contrast DNA and RNA (4-5)
one vs 2 strands
U, different sugars
RNA leaves nucleus
RNA is recycled
Lots of different types of RNA
specific order or amino acids