Organic Molecules Review

Which organic molecule is correctly paired with an end product of its digestion

• nucleic acid- glycerol

• Carbohydrate- fatty acid

• protein - amino acid

• lipid- nucleotide

Which compound is a polysaccharide?

• glucose

• maltase

• ribose

• starch

All carbohydrates are compounds that contain the elements

• iron, magnesium, and carbon

• oxygen, hydrogen, and nitrogen

• carbon, oxygen, and nitrogen

• carbon, hydrogen, and oxygen

Cells in the stomach produce pepsin, and enzyme, to help digest food. Pepsin works best at a pH of 2? Which of these graphs most likely shows what will happen to the activity of pepsin as the PH of the stomach is increased?

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Which organic molecule is produced when three fatty acid molecules bond to one glycerol molecule

• glycogen

• ATP

• PGAL

• a lipid

DNA is a polymer consisting of repeating units known as

• dipeptides

• nucleotides

• amino acids

• organic acids

Which molecule supplies the energy for cellular functions?

• ATP

• oxygen

• DNA

• water

Tags

NGSS.HS-LS1-7

According to the table, at what temperature would enzyme D most likely be denatured?

• 15°C

• 20°C

• 25°C

• 89°C

Which statement best describes the enzyme represented in the graphs?

• This enzyme works best at a temp of 35°C and a pH of 8

• This enzyme works best at a temp of 50°C and a pH of 12

• Temperature and pH have no effect on the action of this enzyme

• This enzyme works best at a temp above 50°C and a pH above 8

Graph I shows the relationship between the relative rates of Activity of enzymes A and B and temperature, and Graph II shows PH. Under which conditions is enzyme A most effective?

• at 40°C and pH of 5

• at 45°C and pH of 5

• at 45°C and pH of 9

• at 50°C and pH of 9