Biology 101

Chapter 11: Photosynthesis

1. Which of the following statements best describes the primary difference between autotrophs and heterotrophs?

&nbsp;&nbsp;A) Autotrophs decompose dead organic matter, while heterotrophs only consume living organisms.

B) Heterotrophs produce oxygen as a by-product of photosynthesis, while autotrophs produce carbon dioxide.

&nbsp;&nbsp;C) Heterotrophs can live independently of other organisms, while autotrophs rely on symbiotic relationships

D)Autotrophs can synthesize their own food from inorganic substances, whereas heterotrophs cannot.

In any ecosystem , terrestrial or aquatic, what group(s) is(are) always necessary?&nbsp;

B) producers and primary consumers

3. Which types of organisms are considered producers in most ecosystems?

&nbsp;D) All multicellular organisms

Which &nbsp;of the following is not a product of the photosynthesis process that directly supports the biosphere?

what is the process that transforms the energy of sunlight into chemical energy stored in sugars and other organic molecules?

Which molecule acts as the primary electron acceptor in the light reactions?

during the light reactions which molecule is split to provide electrons?

Use the following information to answer the questions below
Theodor W.Engelmann illuminated a filament of algae with light that passed through a prism,thus exposing different segments of algae&nbsp;
To different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. he noted that the
Largest groups were found in the areas illuminated by the red and blue light.
what did Engelmann conclude about the congregation of bacteria in the red and blue areas?

Bacteria released excess carbon dioxide in these areas

Bacteria congregated in these areas due to an increase in the temperature of the red and blue light

Bacteria congregated in these areas because these areas had the most oxygen being released

Bacteria are attached to red and blue light and thus these wavelengths are more reactive than other wavelengths

Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis

An outcome of the experiment was to help determine

the relationship between heterotrophic and autotrophic organisms

the relationship between wavelength of light and aerobic respiration

the relationship between wavelength of light and the amount of heat released

the relationship between wavelength of light and the oxygen released during photosynthesis

the relationship between the concentration of carbon dioxide and the rate of photosynthesis

Which wavelengths of light are most effective for photosynthesis in plants?

All wavelengths are equally effective

Which event directly follows the absorption of light by chlorophyll in photosynthesis?

Splitting of water to release oxygen

Excitation of electrons to a higher energy state

What role does the splitting of water play in the light reactions of photosynthesis?

It provides electrons to replace those lost by chlorophyll.

Which of the following best describes the role of the electron transport chain in the light reactions?

) It transfers electrons from water to NADP+, producing NADPH.

It uses light energy to directly produce oxygen.

It transports protons across the chloroplast membrane to generate a gradient.

Which molecule is formed as a by-product of the light reactions and released into the atmosphere?

In the cyclic electron flow during photosystem:

The reaction center chlorophyll of photosystem I is known as P700 because:

There are 700 chlorophyll molecules in the center

This pigment is best at absorbing light with a wavelength of 700 nm.

There are 700 photosystem I components to each chloroplast

It absorbs 700 photons per microsecond

The plastoquinone reflects light with a wavelength of 700

The correct sequential flow of electrons from PSI to PSII is:

In photosynthesis, the chemiosmosis production of ATP:

Is typically similar to ATP production of ATP in mitochondria

Which of the following are directly associated with photosystem I ?

receiving electrons from &nbsp;olastocyanin

extraction of hydrogen electrons from the splitting of water

passing electrons to plastoquinone

How many molecules of ATP and NADPH are required to produce one molecule of G3P?

Where does the Calvin cycle take place?

Cytoplasm surrounding the chloroplast.

Which is the correct order for the stages of the Calvin cycle?

Carbon fixation, Regeneration, Reduction

Regeneration, Carbon fixation, Reduction

Reduction, Carbon fixation, Regeneration

Carbon fixation, Reduction, Regeneration

which of the following &nbsp;products of the light reactions of photosynthesis that are utilized in the calvin&nbsp;
Cycle?

for the following questions, compare the light reactions with the calvin cycle of photosynthesis in plants
producers molecular oxxygen(O2)

both the light reactions and the calvin cycle

neither the light reactions nor the calvin cycle

occurs in the chloroplast but is not part of photosynthesis

What is the primary function of the calvin cycle?

use NADPH to release carbon dioxide

transport RuBP out of the chloroplast

synthesize simple sugars from carbon dioxide

In a plant cell, where are the ATP synthase complexes located?