Difference between Cyclic and Noncyclic Photophosphorylation – Comparison Table


compare cyclic and noncyclic photophosphorylation

Cyclic Photophosphorylation vs Non-cyclic Photophosphorylation
(Similarities and Differences between Cyclic and Non-cyclic Photophosphorylation)

The process of photosynthesis is completed in two main steps – Light reaction and Dark reaction. The Light reaction is the light-dependent reaction where the assimilatory powers (ATP and reduced coenzymes) are generated in the grana of chloroplasts. During the light reaction, photolysis of water and evolution of oxygen take place. In the dark reaction (light independent reaction), the assimilatory powers synthesized in the light reaction are utilized to reduce the CO2 to carbohydrates.

During the light reaction, energy in the sunlight is captured by the reaction centers of photosystems (PS I and/or PS II) and they expel electrons with high energy. These electrons then pass through a series of complexes called Electron Transport System (ETS) to synthesize the assimilatory powers. During the pathway of electrons through the ETS, phosphorylation reaction occurs at specific points which results in the synthesis of energy-rich APT molecules. Since this phosphorylation is occurring in presence of light, it is called photophosphorylation. Depending upon the path of electrons in the electron-transport-system of the primary photochemical reaction, there are two types of photophosphorylation processes. They are (1) Cyclic photophosphorylation and (2) Noncyclic photophosphorylation. The present post discusses the similarities and differences between cyclic and noncyclic photophosphorylation with a comparison table.

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Difference between Photorespiration and Respiration – Comparison Table


Photorespiration vs Respiration

Photorespiration vs Respiration
(Similarities and Differences Photorespiration and Respiration)

Photorespiration is a type of respiration process occurs in plants in presence of light and at higher concentrations of oxygen. The photorespiration is also called C2 cycle or glycolate metabolism since the first stable product of the photorespiration reaction is a 2 carbon compound called glycolate. The respiration (also called normal respiration or dark respiration) is a metabolic pathway which releases energy-rich molecules by the breakdown of sugar molecules such as glucose. Even though the photorespiration and the normal respiration occur in the presence of oxygen, the two pathways are independent process and show considerable differences. The photorespiration is not universally present in all plants; rather it usually occurs in C3 plants. The process of photorespiration is essentially absent in C4 plants. The present post discusses the similarities and differences between photorespiration and normal respiration with a comparison table.

Learn more: C3 vs C4 Cycle of Photosynthesis

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Difference between Micronutrients and Macronutrients – Comparison Table


Micronutrients vs macronutrients

Micronutrients vs Macronutrients
(Difference between Micronutrients and Macronutrients in Plants)

Nutrients are chemical substances required for the proper growth and functioning of all living organisms including plants and animals. The nutrients are also called essential elements because, in the absence of these chemicals, plants and animals cannot complete their life cycle. Important nutrients required by the plants for their proper growth are C, H, O, N, P, K, Cs, S, Mg, Fe, Mn, Cu, Zn, Mo, B, Cl and Ni. Except for C, H and O, all other nutrients are absorbed from soil as inorganic ions by the root cells.

Learn more: Mineral Absorption in Plants

In Plants, the nutrients are classified into two categories based on how much quantity they are required by the cells. They are (1) Micronutrients and (2) Macronutrients.

Micronutrients: These nutrients are required in very less amount when compared to macronutrients. Micronutrients of plants are Fe, Mn, Cu, Zn, Mo, B, Cl and Ni.

Macronutrients: These nutrients are required in relatively large amounts for the proper functions of the cells. C, H, O, N, P, K, Cs, S and Mg are the macronutrients of plants. Among these, C, H, and O are NOT absorbed from the soil by root. N, P and K are called Primary nutrients. Ca, S and Mg are called Secondary nutrients.

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Difference between Active and Passive Water Absorption – Comparison Table


Active vs Passive Absorption of Water

Active vs Passive Water Absorption
(Difference between Active and Passive Absorption of Water in Plants)

Plants absorb water along with minerals from the soil through root by a process called ‘absorption of water’. Based on the involvement of metabolic energy, the water absorption process in plants may be of two types – (1) Active absorption and (2) Passive absorption.

Active absorption: It is the absorption of water, usually against the concentration gradient, by the utilization of metabolic energy (energy from ATP).

Passive absorption: Absorption of water without the utilization of metabolic energy.

 

Apoplast vs Symplast

image source: wikipedia

The present post discusses the Difference between Active and Passive water absorption process in plants with a comparison table.

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Difference between Simple Diffusion and Facilitated Diffusion: A Comparison Table


Difference between Simple and Facilitated Diffusion

Simple Diffusion vs Facilitated Diffusion
(Difference between Simple and Facilitated Diffusion)

Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration. Based on the presence or absence of facilitator molecules, there are two types of diffusion processes. They are (1) Simple Diffusion and (2) Facilitated Diffusion.

(1). Simple Diffusion: Here the diffusion occurs without the aid of an intermediary molecule such as channel proteins or carrier molecules.

(2). Facilitated Diffusion: Facilitated diffusion is the process of spontaneous transport of molecules or ions across a cell’s membrane via specific trans-membrane proteins.

Difference Simple and Facilitated Diffusion

The present post discusses the Difference between the Simple and Facilitated Diffusion Process.

Difference between Simple Diffusion and Facilitated Diffusion

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