2.1 Molecules to Metabolism

Which is the best description of this molecule?

• Starch

• Glucose

• Ribose

• Disaccharide

Tags

NGSS.HS-LS1-6

What type of molecule is shown by diagram?

• saturated fatty acid

• unsaturated fatty acid

• Oil

• Tryglyceride

Which of the following terms describes the web of all of the enzyme-catalyzed chemical reactions in a cell?

• Catabolism

• Metabolism

• Anabolism

• Hydrolysis

Which statement best describes a 'hydrolysis reaction'?

• A chemical reaction that breaks down water molecules in a metabolic pathway

• A chemical reaction that breaks apart a larger molecule by adding a molecule of water

• A chemical reaction in which two molecules become covalently bonded to each other through the loss of a water molecule

• A chemical reaction that breaks down large molecules into smaller molecules by removing water

Which of the following molecules contains only carbon, hydrogen, and oxygen atoms?

• Ribose & DNA

• Proteins & Carbohydrates

• Polypeptides

  & Polysaccharide

• Disaccharides & Polysaccharides

Which of the following is the name given to lipids made by a condensation reaction between glycerol and three fatty acids?

• Phospholipids

• Tripeptides

• Triglycerides

• Polysaccharides

Which of the following best describes a polypeptide?

• A polymer of many proteins linked together by peptide bonds

• A chain of peptides linked by ionic bonds

• A polymer of sugars linked together by covalent bonds

• A chain of amino acids linked together by peptide bonds

What is the biological name for a single sugar molecule such as glucose or fructose?

• Monosaccharide

• Disaccharide

• Polysaccharide

• Ribose

Which one of the molecule diagrams below correctly represents an amino acid molecule?

• 1

• 2

• 3

• 4

What does the R-group on a diagram of an amino acid represent?

• A polar side chain.

• The element Rubidium.

• A molecular structure which is different in each amino acid.

• An amphipathic region of the molecule.