Exam 6: Photosynthesis and Cellular Respiration

The first stable product of carbon fixation in C₃ photosynthesis is

The energy that is needed to produce the flash of a firefly originally comes from sunlight.

It is reasonable to say that our brain is solar powered because

Stomata admit CO₂ to the leaf interior but also facilitate the loss of water from the leaves;plants must regulate their stomata carefully or risk dehydration.A reasonable hypothesis associated with the global increase in atmospheric CO₂ is that plants will

Oxidative phosphorylation includes an electron transport chain.

Electrons gain energy as they move through the electron transport chain.

Not all visible light supports photosynthesis;the chlorophyll molecules in an antenna complex can be excited only by those wavelengths that are colored ________ and ________.

In C₄ plants,carbon fixation and the workings of rubisco are spatially separated.Carbon fixation occurs in the ________ cells,and then rubisco adds CO₂ to RuBP in ________ cells.

The respiratory poison that shuts down ATP production by mitochondria and smells like bitter almonds is ________.

The light reactions in photosynthesis result in three output products: molecular oxygen,ATP,and ________.

Plants that live in very dry regions where they are subject to the dangers of extreme water loss through their stomata open their stomata only at night,when the temperature is lower and the air is not as dry.These plants are referred to as ________ plants.

An electron transport chain is made up of a group of membrane-embedded,electron-accepting ________.

NADH serves as an energy carrier in living organisms by coupling ________ with ________.

The green pigment that is most commonly associated with photosynthesis is ________.

Because inorganic carbon cannot be used by living organisms to build biological molecules,carbon fixation may be the most important metabolic process in the biosphere;if so,the most important enzyme in the biosphere would be

Acetyl CoA donates the two-carbon acetyl group to a four-carbon acceptor molecule to begin what process?

Only animal cells carry out oxidative phosphorylation.

When yeasts are exposed to anaerobic conditions,they regenerate NAD⁺ from NADH in a series of reactions that make CO₂ and ________.

NAD⁺ becomes NADH when it gains one proton and two high-energy ________.

Cyanide blocks the electron transport chain in mitochondria and can ultimately cause the glycolytic pathway to shut down because no NADH is available to keep it going.