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Are You Getting Enough Protein?
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Metabolism is _____________ while Anabolism is _____________ and Catabolism is _____________
All the chemical reactions in the body. Chemical reactions that build bonds. Chemical reactions that break bonds.
Amino acids that contain sulfur atoms will ____________________.
Form disulfide bridges because sulfur loves to bond with sulfur.
Nonpolar amino acids will ___________________
not attract water and will tend to cluster together so they can hide from water. This will form predictable shapes.
Why do polar amino acids attract water molecules?
Because water is also a polar molecule
What are the two chemicals thal ALL amino acids have in common?
Carboxyl groups and Amino Groups
True or False: Hydrophobic molecules love water and will attract water molecules while hydrophilic molecules hate water and attract each other.
False
What caused this blood cell to form this "sickle" shape?
A mistake in the primary structure of the protein.
When a large, complex protein loses its higher-order structure, but not its primary sequence it is said to be _______________.
Denatured. REMEMBER! Denatured proteins will NOT work!
Hemoglobin is made of several different "blobs" of alpha helices connected with hydrogen bonds and hydrophobic interactions. What level of protein structure is this HUGE molecule at?
Quaternary structure
The human immune system requires proteins such as ____________ and __________ to work efficiently.
Antigens and Antibodies
The beta sheet is an example of what kind of protein structure?
Secondary structure. Yes, there are folds, but it is made from one sheet of several primary structures.
The Alpha Helix is an example of what kind of protein structure?
Secondary structure. Here you have a bunch of primary structures bonded together. Yes, there is a twisty shape, but it is made from one flat sheet.
Insulin is a protein-based hormone your body needs to regulate blood sugar. What kind of protein structure is it made of?
Primary structure. It is simply a bunch of amino acids covalently bonded into a flat chain.
The amino acid sequence of a protein is determined by _____________________.
the DNA found in a gene that encodes for that protein.
True or False. When amino acids are covalently bonded together, the two carboxyl groups, found on the amino acids, need to be attached together.
False! It is the amino group of one amino acid that needs to be connected to the carboxyl group of the other.
What kind of chemical reaction is taking place here?
You can call this oxidation. HOWEVER! Specfically, it is a hydrolysis reaction because water is needed to break the covalent bond.
What kind of chemical reaction is taking place here?
You can call it a reduction reaction. HOWEVER! Specifically, it is a dehydration synthesis reaction.
What kind of chemical bond is being formed here?
A peptide bond. This is a special kind of covalent bond formed between two amino acids.
What is the difference between essential amino acids and nonessential amino acids?
You can only get essential amino acids in your food. Your body can make nonessential amino acids.
In this model of an amino acid, what does the R stand for?
R refers to the variable group, or side chain, which is the rest of the molecule that makes it different from other amino acids.
This functional group, that is found on an amino acid, is called _____________.
A carboxyl group
NH2 is what kind of functional group found on an amino acid? REMEMBER! "R" simply refers to the "Rest of the Molecule".
An amino group
In order to assemble amino acids into proteins, your body needs a blueprint. What kind of molecule is the blueprint?
DNA is a molecular set of instructions that tells your body how to assemble amino acids in the correct order needed to make proteins.
Proteins are polymers. What are the monomers needed to make them?
Amino Acids