Science Test #4

A vibrant and educational illustration of a plant undergoing photosynthesis, showcasing chloroplasts, sunlight, and the process of converting light energy into chemical energy in a visually engaging way.

Photosynthesis Knowledge Quiz

Test your understanding of the photosynthesis process with our detailed quiz! This quiz covers essential aspects of light-dependent and light-independent reactions, the role of chloroplasts, and energy carriers like NADP+.

Challenge yourself with 17 multiple-choice questions designed for students and anyone interested in plant biology and photosynthesis.

17 Questions4 MinutesCreated by LearningLeaf42

In photosynthesis, what are the roles of NADPH & ATP in the light-independent reactions?

Providing the oxygen for sugar molecules

Providing the carbon for sugar molecules

Absorbing the energy or light and transferring it to electrons

Supplying the energy necessary to assemble sugar molecules.

What is the role of light in photosynthesis?

light energy is cycled within the thylakoid

Light is reflected from the chloroplast during the light-independent reactions

the chloroplast reflects the green wavelengths of light

Light is the ultimate energy source for converting NADP+ to NADPH and indirectly ADP to ATP

What BEST describes the toles of phtosystem 1 and photosystem 2 in the process of photosynthesis?

They absorb sunlight and distribute the energy as heat

They absorb sunlight and transfer the energy to electrons

They form ATP as hydrogen ions cross the thylakoid membrane

They transfer electrons from a series of intermediates to form NADPH

Which of the following is the role of the ETC in the process of photosynthesis

Adding energy to the electrons that enter photosystem 1

Carrying electrons from photosystem 2 to photosystem 1 pulling in H+ ions

Removing electrons from the chloroplast

Cycling electrons from photosystem 1 to photosystem 2.

Daniel is developing a model of the light-independent reactions of photosynthesis, also known as the Calvin cycle. How should the model show how carbon compounds enter and exit the cycle?

Enter as glucose then exit as 3-carbon molecules

Enter as carbon dioxide then exit as two 3 carbon molecules that will combine

Enter as elemental carbon, exit cycle as a completed 6 carbon molecule

Enter as glucose, exit as carbon dioxide

During the light-dependent reactions of photosynthesis, which event must occur for ATP synthase to function properly?

Molecular oxygen must combine with ATP synthase

Photosystem 1 and photosystem 2 must be deactivated

Hydrogen ions must pass through a channel within ATP synthase

A molecule of ATP must release a phosphate group to become ADP

Mimi is asked to describe the structures of chloroplasts. She writes the following sentence: "A chloroplast contains thylakoid stacks, called stroma, that are surrounded by fluid-filled grana." Which change to the sentence is necessary to make the sentence accurate?

Switch the term 'stroma' and 'grana'

Replace 'grana' with 'chlorophyll'

Switch the terms 'thylakoid' and 'stroma'

Replace 'stroma' with 'chlorophyll'

William is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples should he include in his list?

Changes that convert chemical energy into heat and light

Nuclear changes that convert hydrogen and oxygen into carbon

Chemical changes that convert carbohydrates into smaller molecules

Changes that convert light energy into chemical energy stored in carbohydrates like sugar

What describes the process of conversion of ADP to ATP?

A release of energy as a third phosphate group is attached

An input of energy as a third phosphate group is attached

A release of energy as one phosphate group detaches

an input of energy as both phosphate groups separate from ribose

Avier is describing the role of energy carries,. Such as NADP+, in photosynthesis. Which property of NADP+should Xavier cite?

Its reactivity with oxygen and water and carbon dioxide

Its ability to emit a stream of electrons in a nuclear reaction

Its ability to accept and release two high energy electrons

The chemical bonds formed by electrons in its molecular structure to carry phosphates

Taylor is explaining why chlorophyll is classified as a plant pigment and how it is useful in photosynthesis. Which property of chlorophyll would be most appropriate for her to cite?

Chlorophyll's absorption of green color

Chlorophyll's presence in stroma

Chlorophyll's ability to absorb red and blue light

Chlorophyll's reactivity with oxygen.

Under normal condition, gases diffuse through stomata, small holes in the bottom leaves of a plant. When the weather is dangerously hot and dry, plants may become stressed and close these openings to conserve water. How are the closures most likely to affect photosynthesis?

They increase the rate of photosynthesis by increasing the amount of water in the leaf

They have little or no effect on photosynthesis because gases do not take part in the process

They decrease the rate of photosynthesis by preventing carbon dioxide from entering the leaf

They increase the rate of photosynthesis by increasing the amount of oxygen in the leaf

By analyzing the equation: 6CO2 + CH20 = C6H12O6 +6O2, which property of photosynthesis can be identified?

The source of carbon atoms in the carbohydrate product (sugar)

The chemical changes that occur only during the light-dependent reactions

The chemical changes that occur only during the light-independent reactions

The formulas and roles of electron carriers

During photosynthesis what best describes the role of the compund with the chemical formula C6H12O6?

A product that is useful because of its high energy chemical bonds

A reactant that is useful because of its high-energy chemical bonds

A product that is not useful because of its low-energy chemical bonds

Either a product or a reactant , depending on whether the cell needs to store energy or release energy

Ohn drew a diagram of the light-dependent reaction for his table team. In his drawing an arrows leads from the splitting of water, to the two photosystems, and then to NADP+. What process is represented by this arrow?

The formation of high-energy sugars

The conversion of electrons into sunlight

The cycling of light energy within the photosystems

The movement of electrons along the ETC.

What is the important 3-carbon molecule produced int eh Calvin Cycle when electrons are added to a 3-carbon bi-phosphate molecule?

Science Test #4

Photosynthesis Knowledge Quiz

More Quizzes