Exam 4: How Cells Work

Each time you take a breath you are bringing in the oxygen you need to stay alive. The ultimate source of the oxygen used by all aerobic organisms comes from a reaction that breaks down

What is the importance of photosynthesis to organisms other than plants?

Two students are discussing the importance of glycolysis in human cells. One student states that the main function of glycolysis is to produce ATP. The other states that the main function is to produce NADH. Which student is correct?

In the reaction C₆H₁₂O₆ + 6 O₂ à 6 CO₂ + 6 H₂O, the 6 CO₂ molecules are some of the

Which of the following statements describe the function of the light reaction in photosynthesis?

In the reaction H₂O + CO₂ + carbonic anhydrase à H⁺ + HCO₃⁻+ carbonic anhydrase, carbonic anhydrase is a(n)

In photosynthesis, the carbon used to make sugars is

The energy required for life processes must be extracted from an organism's

Which of the following molecules carries electrons to the electron transport chain of oxidative phosphorylation?

The ________ of an enzyme is an area with a specialized shape and/or set of chemical properties that allows the enzyme to bind with a particular substrate.

Carbon dioxide is one product of a metabolic process, which occurs in both plants and animals. This process is called

When ATP breaks down into ADP and a phosphate group,

The evolution of photosynthesis was an essential event for the evolution of life as we know it. Defend this statement by discussing the importance of the products of photosynthesis.

The Krebs cycle produces

What best summarizes the events of the Calvin cycle?

For each characteristic below, state if it applies to photosynthesis and/or cellular respiration. a.photosynthesis only b.cellular respiration only c.both photosynthesis and cellular respiration d.neither photosynthesis nor cellular respiration -produces carbon dioxide

The capture and use of energy by living organisms involves numerous chemical reactions. Collectively these processes are known as

Which of the following is either consumed or synthesized in virtually every cellular reaction?

During exercise, the increase in respiration rate and heartbeat speed are driven by the need to replenish the oxygen used to support

________ reactions release energy by breaking down complex molecules.