Exam 7: Capturing Solar Energy: Photosynthesis

Suppose you are studying photosynthesis in a research lab. You grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. What photosynthetic product will be radioactive?

Imagine you are conducting a photosynthesis experiment on a plant in the lab. You block any light from reaching the plant. Explain the specific effect this will have on the light reactions.

Water is required to drive which of the following reactions?

You are carrying out an experiment on several aquatic plants in your fish tank. You decide to expose two of the plants to green light and two to blue light. You want to determine which type of light is best for the light reactions, so to reach your conclusions, you decide to record the amount of oxygen bubbles produced. Which of the following results would be expected?

The cellular organelle that utilizes sunlight to convert carbon dioxide and water into sugar and oxygen is the

Imagine that a scientist discovers a mutant plant seedling that appears to lack stomata. What would be the effect of this?

Which of the following provides O₂ as an end product?

Light-harvesting pigments in the chloroplast include chlorophyll and the yellowish accessory pigments called _________.

What happens to the photosynthetic reactions when no sunlight is present?

The cells in the _________layer of the leaf contain the majority of a leaf?s chloroplasts.

The process of photosynthesis converts solar energy to_________ energy stored in the bonds of glucose.

The energy required for photosynthesis to occur is

All of the following compounds are necessary components for photosynthesis EXCEPT

The primary function of the light reactions of photosynthesis is to

Why does photorespiration reduce photosynthesis efficiency?

All of the following are true of biofuels EXCEPT

In the chloroplast, energy in sunlight is passed around different chlorophyll molecules until it reaches a specific chlorophyll molecule that can transfer energy in sunlight to an energized electron. This chlorophyll molecule is called the

Albino corn has no chlorophyll. You would expect albino corn seedlings to

Imagine that, similar to events that occurred 65 million years ago, a huge meteorite were to hit Earth tomorrow, spewing cloudy debris into the atmosphere and blocking a large proportion of sunlight. Because plants rely on sunlight, global rates of photosynthesis would be greatly reduced, and many of the animals that depend on photosynthetic plants (such as herbivores and the predators that feed on those herbivores) would starve or go extinct. In this scenario, why canʹt the plants continue to produce sugars and survive if the sugar-producing reactions in photosynthesis are considered ʹlight independentʺ?

During the process of photosynthesis, solar energy is converted to