Study guide science test
Which row in the chart correctly pairs a food molecule with its building block? *diagram shown with food molecules and building blocks one shows starch and amino acids, two shows sugar and starch, three shows protein and amino acids, and four shows amino acids and sugar*
3. Amino acids are the building blocks of proteins.
*Picture of starch molecule is shown* The energy in this molecule is stored: a-in the bonds between atoms b-in the oxygen found in the molecule c-when the carbon atoms break off d-when water breaks this molecule apart
A. Energy is stored in the bonds between the atoms of the molecule during the process of photosynthesis.
*chart is shown with molecules* A-12 H, 6 C, 0 N, 6 O, 0 Ca B-0 H, 1 C, 0 N, 2 O, 0 Ca C-3 H, 0 C, 1 N,0 O, 0 Ca D-0 H, 1 C, 0 N, 3 O, 1 Ca
A. Organic compounds contain both carbon and hydrogen. Only molecule A contains both carbon and hydrogen.
*diagram is shown with organic compounds, bottom row having , protein, x, DNA, Fats* What substance could be represented by the letter x. a-carbohydrates b-ozone c-carbon dioxide d-water
A. Organic compounds must contain both carbon and hydrogen. Carbohydrates are organic compounds. Glucose and starches are examples of carbohydrates.
The shape of a protein is originally determined by the
Arrangement of amino acids in the protein.
Which group consists entirely of organic molecules: a-protein, oxygen, fat b-protein, starch, fat c-water, carbon dioxide, oxygen d-water, starch, protein
B. Protein, starch, and fat are organic molecules containing both carbon and hydrogen.
Most of the starch stored in the cells of a potato is composed of molecules that originally entered these cells as: a-enzymes b-simple sugars c-amino acids d-minerals
B. Starches are made from simple sugars.
*diagram shows A (larger part) broken down to b (smaller part)* Which row indicates what's a and b could represent. a-starch and proteins b-starch and amino acids c-protein and amino acids d-protein and simple sugars
C. Proteins can be broken down into amino acids. Starches are broken down into simple sugars.
*diagram shown to represent a metabolic process, with smaller pieces making up starch* This process best represents: a-the bonding of amino acids to form a starch molecule b-the digestion of amino acids to form a starch molecule c-the bonding of simple sugars to form a starch molecule d-the digestion of simple sugars to form a starch molecule
C. Starches are formed by the bonding of simple sugars.
*refering back to a diagram that shows a portion of a starch molecule* The building blocks for this molecule are....
Simple sugars are the building blocks of the starch molecule.
In which process are simple materials chemically combined to form more complex materials?
Synthesis is the process in which small simple molecules are joined to make a large complex molecules. Synthesis always proceeds from small to large.
The shape of a protein molecule directly determines its..
The shape of a protein molecule directly determines its functions. Proteins such as enzymes have active sites that specific molecules fit into.
The function of most proteins depends primarily on the...
Type and order of amino acids they are composed of.
Four major categories of organic compounds
lipids, carbohydrates, proteins, nucleic acids