Chapter 3 Flashcards
what element has high bonding capability
carbon
how many electrons does carbon share to form biological molecules
4
the study of molecules with carbon
organic chemistry
is carbon dioxide organic
carbon dioxide is NOT organic
hydrogen and carbon ONLY
hydrocarbons
same chemical formula. different shape
isomers
important chemical groups in molecules
functional groups
are functional groups hydrophobic or hydrophilic?
hydrophilic
Are functional groups polar or non polar?
polar
Carbohydrates are
sugars
lipids are
fats
proteins are
enzymes
nucleic acids are
DNA/RNA
large molecule made of smaller ones
polymer
small, simple molecule that combine to form polymers
monomers
how do monomers form polymers?
covalent bond
steps of dehydration
- removes water
- forms a covalent bond
(this is known as synthesis)
steps of hydrolysis
- Breaks a covalent bond
- Adds water
(decomposition)
builds a polymer
dehydration
breaks polymers into monomers
hydrolysis
what do carbohydrates contain
carbon, oxygen, and hydrogen
what are carbohydrates made up of?
monosaccharides
what are 2 examples of monosaccharides?
glucose and fructose
larger sugars, combination of monosaccharides
polysaccharides
what are the 4 complex carbohydrates that contribute to life?
Starch, Glycogen, cellulose, chitin
glucose storage in animals
glycogen
holds structures of plants
cellulose
can animals digest cellulose?
no it is INSOLUBLE fiber
exoskeleton of arthropods
chitin
smaller than other biological molecules
lipids
no common structural element
lipids
are lipids hydrophobic or hydrophilic?
hydrophobic
what are the 4 classes of lipids?
- Glycerides
- Steroids
- phospholipids
- wax
what kind of reactions are glycerides linked in?
dehydration
most commonly ingested lipid by humans
triglycerides
contains all single bonds
saturated fats
solid at room temperature
saturated fats
animal fats
saturated
contain double bonds
unsaturated
liquid at room temp
unsaturated fats
plant fats
unsaturated
adding hydrogens to naturally unsaturated fats making them saturated
hydrogenated oils
contain 4 carbon rings with various side chains
steroids
makes up cells and can cause cardiovascular problems
cholesterol
types of steriods
cholesterol
estrogen
testosterone
types of glycerides
saturated and unsaturated
charged molecule with 2 fatty acids, glycerol and phosphate
phospholipids
phospholipids have a _______ head and a ________ tail
hydrophilic head
hydrophobic tail
make up plasma membrane of cells
phospholipids
important sealing function in the living world
wax
made up of chains of amino acids
protein
can be hydrophilic or hydrophobic
proteins
form between amino acids
peptide bonds
chain of amino acids
polypeptide chain
types of proteins
enzymes structural contractile defensive signaling receptor storage
structure sequence:
amino acids code proteins
primary structure
structure sequence:
hydrogen bonds between amino acids
secondary
structure sequence
groups realign
hydrophobic with other hydrophobic
tertiary
2 or more polypeptide chains come together forming a 3D shape (functioning protein)
quaternary
degrades protein’s shape
denaturation
combination of lipids and proteins
lipoprotein
what do lipoproteins do?
transport cholesterol in humans
combination of proteins and carbs
glycoproteins
signal-receiving receptors found on cell surfaces
glycoproteins
made up of nucleotides
nucleic acids
contain 1 phosphate group, a sugar group and a nitrogenous base
nucleotides
examples of nucleotides
ATP, DNA, RNA
instruction code for proteins
DNA
holds genes
DNA
“translator”
RNA
coding DNA into RNA
transcription
coding RNA into proteins
translation