Test #4: Biomolecule Foldable Some questions (c) 2015 by Region 10 Educational Service Center. Some questions (c) 2015 by TEKS Resource System.
Page 2 GO ON 1 Which of these best represents a fatty-acid molecule? A
B
C
D
2 Which of these substances stores the 3 Which biomolecule's function is least most energy? likely to be affected by the order of its F one gram of alcohol single-molecule units? G one gram of carbohydrate A DNA H one gram of fat B starch J one gram of protein C RNA D protein
Page 3 GO ON 4 A biomolecule that is a large, complex 6 Many land plants store energy in starch. set of chains composed of alternating When energy is needed, the starch subunits called nucleotides has which of molecules can be broken down quickly. these functions in the cell? This chemical reaction produces which F storing energy of the following? G catalyzing cellular reactions F amino acids H building tissue G lipids J storing genetic information H monosaccharides J RNA chains
5 The enzymes that catalyze cellular reactions are macromolecules made of 7 What monomer is represented by this organic compounds composed of carbon, diagram? hydrogen, oxygen, and nitrogen. These types of macromolecules are known as – A carbohydrates B lipids C proteins A monosaccharide D nucleic acids B nucleotide C glycerol D amino acid
Page 4 GO ON 8 A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories. Which nutrition label lists the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules? F
G
H
Page 5 GO ON J
Page 6 GO ON 9 Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides? A Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine. B Only proteins are formed from amino acids joined by peptide bonds. C Only polysaccharides can be folded and twisted to very specific shapes. D Only proteins can be large molecules with thousands of subunits.
10 Many plants have waxy coatings on 11 Which of the following elements are some surfaces. This coating reduces common to all biomolecules? water loss because it is not water- permeable. This waxy coating is which I. Carbon of the following types of organic II. Nitrogen molecule? III. Hydrogen F carbohydrate IV. Potassium
G lipid A I, III H nucleic acid B II, IV J protein C I, II, III D I, II, III, IV
Page 7 GO ON 12 Which of the following molecules is formed from a product of photosynthesis? F
G
H
J
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