chapter 7 BIOLOGY – Flashcards

Atrazine is a widely used herbicide that binds to a protein in photosystem II, ultimately causing a breakdown in electron transport. Atrazine would first inhibit the production of

In photophosphorylation, energy from electron flow is used to transport ________ from the ________ to the thylakoid compartment, generating a concentration gradient of ________.

Which of the following has been a major source of ozone destruction over the past 50 years?

In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like

In most green plants, chloroplasts are

The energy that excites the photosystems is supplied by

If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?

In this drawing of a chloroplast, which structure represents the thylakoid membrane?

Which of the following are produced during the light reactions of photosynthesis?

Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that

Why are most plants green?

You want to use radioactively labeled oxygen to trace carbon fixation in a plant. You should incorporate the radioactively labeled oxygen into

Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.

In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the

Photosynthetic organisms derive their carbon from

A redox reaction involves the transfer of

Many of the regions of the world where hunger is prevalent are also regions with hot and dry climates. What types of agricultural crops would you suggest that these regions attempt to grow?

Sunlight is a type of ________ energy.

You're conducting an experiment to determine the effect of different wavelengths of light on the absorption of carbon dioxide as an indicator of the rate of photosynthesis in aquatic ecosystems. If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease, and vice versa. Small aquatic plants are placed into three containers of water mixed with carbon dioxide. Container A is placed under normal sunlight, B under green light, and C under red light. The containers are observed for a 24-hour period. Based on your knowledge of the process of photosynthesis, the plant in the container placed under red light would probably

According to this figure, how do hydrogen ions make their way from the stroma to the thylakoid interior?

Plants use sugars as

The oxygen released into the air as a product of photosynthesis comes from

Put the following steps of the light reactions in the correct order: 1. Light excites an electron from photosystem I. 2. Light excites an electron from photosystem II. 3. Electrons reduce NADP+ to NADPH. 4. Electrons pass through an electron transport chain, which generates a H+ gradient used to make ATP.

Ozone

Put the following steps of the Calvin cycle in the correct order: 1. Carbon fixation 2. Regeneration of RuBP 3. Release of G3P 4. Reduction