Question

Autotrophy is MOST ACCURATELY defined as

Select one:

a. the synthesis of organic matter from inorganic materials using energy from light or oxidation of reduced molecules or elements.

b. the breakdown of organic matter to yield energy.

c. recycling of cellular structures.

d. the light driven assimilation of CO₂ into organic matter.

A pot plant sits on a windowsill absorbing sunlight. How does a root cell (which is in the dark) obtain its energy for cellular function, such as active transport across its membrane?

Select one:

a. Carbohydrates are made in the leaves via photosynthesis and moved to the root

b. The root cell makes carbohydrates using the dark reaction (Calvin cycle) of photosynthesis

c. ATP is made within the leaves via photosynthesis and moved to the root

d. The root cell utilises infrared light to photosynthesise organic carbon molecules

For the successful production of NADPH in photosynthesis, what must occur?

Select one:

a. Coenzyme Q is reduced and transfers electrons from complex I to complex II.

b. The direct transfer of electrons from Photosystem II to the protein plastocyanin.

c. The passing of protons through NADP⁺ synthase from the stroma to the thylakoid lumen.

d. A second input of light energy at Photosystem I to produce electron donor molecules capable of reducing NADP⁺.

In the Calvin Cycle, the regeneration of Ribulose-1,5-biphosphate (RuBP) from 3-carbon compounds requires:

Select one:

a. Electrons from NADPH

b. Energy from ATP

c. Catalysation by rubisco

d. Oxidation of pyruvate

An anoxygenic photosynthetic bacteria is growing on a hydrothermal vent in the deep ocean. Which of the following is TRUE?

Select one:

a. It releases an oxygen molecule as a waste product

b. It uses hydrogen sulphide as the electron donor

c. It releases carbon dioxide as a waste product

d. It uses water from the surrounding ocean as the electron donor

Autotrophy is MOST ACCURATELY defined as

Select one:

a. the synthesis of organic matter from inorganic materials using energy from light or oxidation of reduced molecules or elements.

b. the breakdown of organic matter to yield energy.

c. recycling of cellular structures.

d. the light driven assimilation of CO₂ into organic matter.

A pot plant sits on a windowsill absorbing sunlight. How does a root cell (which is in the dark) obtain its energy for cellular function, such as active transport across its membrane?

Select one:

a. Carbohydrates are made in the leaves via photosynthesis and moved to the root

b. The root cell makes carbohydrates using the dark reaction (Calvin cycle) of photosynthesis

c. ATP is made within the leaves via photosynthesis and moved to the root

d. The root cell utilises infrared light to photosynthesise organic carbon molecules

For the successful production of NADPH in photosynthesis, what must occur?

Select one:

a. Coenzyme Q is reduced and transfers electrons from complex I to complex II.

b. The direct transfer of electrons from Photosystem II to the protein plastocyanin.

c. The passing of protons through NADP⁺ synthase from the stroma to the thylakoid lumen.

d. A second input of light energy at Photosystem I to produce electron donor molecules capable of reducing NADP⁺.

In the Calvin Cycle, the regeneration of Ribulose-1,5-biphosphate (RuBP) from 3-carbon compounds requires:

Select one:

a. Electrons from NADPH

b. Energy from ATP

c. Catalysation by rubisco

d. Oxidation of pyruvate

An anoxygenic photosynthetic bacteria is growing on a hydrothermal vent in the deep ocean. Which of the following is TRUE?

Select one:

a. It releases an oxygen molecule as a waste product

b. It uses hydrogen sulphide as the electron donor

c. It releases carbon dioxide as a waste product

d. It uses water from the surrounding ocean as the electron donor

Answer 1