Biomolecules
What are the 4 biomolecules?
Carbohydrate, Lipid, Protein, Nucleic Acid
What type of biomolecule is an enzyme?
Protein
What is the subunit of a nucleic acid?
Nucleotide
What does it mean that water is "polar"?
It has a positive and negative end
Enzymes only work with specific substrates.
What type of biomolecule are membranes made of?
Lipids
From the lock and key model, what is the lock and what is the key?
Lock = enzyme
Key = substrate
What is the job of DNA?
Store genetic information
Why can small insects walk on water?
Water has high surface tension
What is a subunit?
What is an example of a carbohydrate?
Starch, sugar, bread, etc.
What does it mean when we say an enzyme is a catalyst?
It causes reactions to happen easier by lowering activation energy
What are the 4 nitrogenous bases in RNA?
Adenine, Uracil, Cytosine, Guanine
AUCG
Why does ice float?
Ice is less dense than water
What is the difference between adhesion and cohesion?
Cohesion is water bonding to other water
Adhesion is water bonding to other polar molecules
What are the subunits of the 4 biomolecules?
Carbohydrate = monosaccharide, simple sugar
Lipid = fatty acid tail
Nucleic acid = nucleotide
What happens when a protein is denatured? What is one way a protein can be denatured?
It no longer is shaped the right way to do its job
Proteins can be denatured by changing pH or temperature from optimal level
What are the 3 parts of a nucleotide?
Sugar, Phosphate, Nitrogenous Base
What property of water is the reason that a large number of molecules can dissolve in water?
Water is the universal solvent
What kind of bonds do water molecules make with other water molecules?
hydrogen bonds
This biomolecule can be used for structure such as in exoskeletons of insects, or cell walls. What biomolecule am I?
Carbohydrate
Draw the 4 steps of an enzymatic reaction in order.
....
List 2 differences between DNA and RNA
DNA: double stranded, sugar = deoxyribose, contains thymine, stores genetic info
RNA: single stranded, sugar = ribose, contains uracil, decodes DNA
Why can water hold a lot of thermal energy?
It has a high specific heat.
What is homeostasis?
Maintaining internal balance of factors