What is the first step in the light-dependent reactions?

What is the first step in the light-dependent reactions?

The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.

What is Z scheme of light reaction?

The “Z‐scheme” describes the oxidation/reduction changes during the light reactions of photosynthesis. Absorption of a photon excites P680 to P680*, which “jumps” to a more actively reducing species. P680* donates its electron to the quinone‐cytochrome bf chain, with proton pumping.

What are the three main steps in cellular respiration?

Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. Glycolysis is an anaerobic process. The other two stages are aerobic processes.

What are the three factors that affect the rate at which photosynthesis occurs?

Three factors that affect the rate of photosynthesis are temperature, light intensity, and the availability of water.

What four factors affect the rate at which photosynthesis can occur?

What factor most affects the rate of photosynthesis? The main variables which affect photosynthesis are light, water, CO2 concentration and temperature.

At what temp does photosynthesis stop?

This is despite the increase of carbon dioxide diffusion into leaves. At a temperature above 104 degrees Fahrenheit – 40 degrees Celsius – the enzymes that carry out photosynthesis lose their shape and functionality, and the photosynthetic rate declines rapidly.

Why the rate of photosynthesis in plants is low both at lower and higher temperatures?

Answer Expert Verified The rate of photosynthesis is maximum at optimum temperature.At lower temperature rate of photosynthesis is low and vice versa because the enzymes like chlorophyll and plastics like chloroplasts involved in the reaction cannot work faster.