Exam 4: Energy and Life

You are investigating a massive fish kill in one of the shallow lakes in the area.Lab reports show no toxins in the water but a monitoring station on a similar lake reported these oxygen and pH values.What,if any,is the relationship between oxygen and pH?

Which molecule stores the energy of electrostatic repulsion?

Select the ultimate source of energy for nearly every organism on this planet.

Some bacteria are photosynthetic.Part of the definition of a prokaryote is that they have no membrane-bound organelles,including chloroplasts.Explain how bacteria carry out photosynthesis without chloroplasts.

What is a photosystem?

Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam.It may be enough energy to turn a mill wheel or an electricity-generating turbine.Choose the term that best describes the type of energy stored in the water at the top of the dam.

Identify the stage of cellular respiration when glucose is split into two molecules of pyruvic acid.

Identify the stage (or stages)of cellular respiration that occurs entirely outside of the mitochondria.

Which of the following statements about heat is false?

The light reactions of photosynthesis ultimately convert low-energy molecules of ________ into high-energy molecules of ________.

Predict what would happen as the entropy of a system approached 100%.

Which stage of photosynthesis,if any,can function in the dark?

Name a product of the Calvin cycle.

Yeast is used to produce beer and wine but can also make bread rise.All of these processes involve the production of alcohol.Explain why you can eat bread and not get drunk.

Which process produces glyceraldehyde 3-phosphate (3GP)?

Explain how molecules other than glucose can be used as energy sources.

Which of the following best describes the chemical equation for photosynthesis?

What is the role of mitochondria in plants?

Explain why mitochondria are often called "the powerhouse of the cell."

We use energy in many ways.Describe one thing we cannot do to energy.