Biology Quiz on Metabolism and Enzymes

Which of the following reactions accurately describes the catabolism event?

• Breaking down carbohydrates into CO2 and H2O while releasing ATP

• Assembling amino acids into proteins that require NADH2

• Breaking down carbohydrates into CO2 and H2O that requires ATP

• Assembling nitrogen bases into nucleic acids that require NADH2

• Breaking down sugars into polysaccharides while releasing ATP

Which of the following is a property of enzymes?

• Not altered by a chemical reaction they influence

• Cannot change the speed of any reaction

• Not affected by changes in acidity and alkalinity

• Not influenced by the presence of inhibitors and activators

• Not affected by environmental temperature

The important product produced during glycolysis by breaking down 1 molecule of glucose is ...

• 1 carbon dioxide, 2 ATP molecules, and 2 NADH2

• 1 lactic acid, 2 ATP molecules, and 2 NADH2

• 1 pyruvic acid molecule, 1 ATP molecule, and 1 NADH2

• 2 acetyl CoA, and 6 NADH2

• 2 pyruvic acids, 2 ATP molecules, and 2 NADH2

At which stage of aerobic respiration is carbon dioxide produced?

• Glycolysis

• Oxidative decarboxylation

• Krebs cycle

• Electron transport system

In the initial stage of the Krebs cycle, acetyl CoA will bind with ...

• Lactic acid

• RUBP

• Rubisco

• Oxaloacetic acid

• Citric acid

The oxygen produced during photosynthesis is formed in the process ...

• Blackman reaction during cyclic photophosphorylation

• Dark reaction during Calvin cycle

• Hill reaction during photolysis

• Light reaction during CO2 oxidation

• Dark reaction during CO2 fixation

The light reaction occurs ...

• Requires light and produces starch

• Requires light and produces oxygen

• Produces starch and oxygen

• Requires light and oxygen

• Requires light and oxygen

The products generated from the light reaction are ...

• ATP

• CO2

• O2

• NADPH2

• Glucose

In the light reaction of photosynthesis, the non-cyclic electron flow is ...

• From P680 back to P680 producing ATP, NADPH2, O2

• From P680 to P700 producing ATP and NADPH2

• From P700 back to P700 producing ATP, NADPH2, O2

• From P680 to P700 producing ATP, NADPH2, and O2

• From P700 to P680 producing ATP and NADPH2

The type of bacteria that can oxidize nitrite compounds into nitrate to obtain energy in the process of chemosynthesis is ...

• Facultative bacteria

• Nitrosomonas bacteria

• Nitrosococcus bacteria

• Sulfur bacteria

• Nitrobacter bacteria