How does photosynthesis work in algae?
Despite their ability to conduct photosynthesis for energy, blue-green algae are a type of bacteria. This process uses carbon dioxide, water and sunlight to produce oxygen and glucose (sugars) for energy. Chlorophyll A is used to capture the energy from sunlight to help this process.
What is the importance of the photosynthetic apparatus?
The photosynthetic apparatus plays a central role in coordinating non-photosynthetic metabolic processes including N-assimilation and antioxidant defense responses according to variations in ambient light conditions. Components depicted within dotted boundaries involve multiple organelles.
Where is the photosynthetic apparatus of cyanobacteria located?
thylakoid membranes
In cyanobacteria, light harvesting is mediated by phycobilisomes (PBSs), complex protein structures located on the cytoplasmic surface of the thylakoid membranes.
What does the photosynthetic apparatus within the chloroplast called?
An organelle within the plant cell in which the photosynthetic reactions are compartmentalized. The non-membrane space within the chloroplast is called the stroma; this is where photosynthetic energy is used to convert CO2 into sugars.
Why is algae green in Colour?
Cellular structure. Green algae have chloroplasts that contain chlorophyll a and b, giving them a bright green color, as well as the accessory pigments beta carotene (red-orange) and xanthophylls (yellow) in stacked thylakoids.
Is algae a bacteria or plant?
Algae are sometimes considered plants and sometimes considered “protists” (a grab-bag category of generally distantly related organisms that are grouped on the basis of not being animals, plants, fungi, bacteria, or archaeans).
What do you mean by photosynthetic apparatus?
The photosynthetic apparatus is a complex machinery consisting of several large protein–pigment complexes whose components are encoded by both nuclear and chloroplast genes. Thus, the biosynthesis of this system involves two distinct genetic systems which act in a coordinate manner.
Which gas is released when plant cells respire aerobically?
oxygen
aerobic respiration uses oxygen and produces carbon dioxide.
What organisms are photosynthetic?
Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis (Figure 1). Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).
What does photosynthetic apparatus mean?
What is the role of xanthophyll cycle in green algae?
Unlike in higher plants, the role of the xanthophyll cycle in green algae (Chlorophyta) is ambiguous, since its contribution to energy dissipation can significantly vary among species.
What is the efficiency of photosynthesis in Microalgae cultures?
The main techniques for measuring and monitoring photosynthetic processes in microalgal cultures are evaluated. Finally, based on detailed knowledge, an estimate of a realistic, practically obtainable, maximum efficiency for photosynthetic solar energy conversion in microalgal cultures might reach 4-5%.
What is the structure of chlorophyll pigments in algae?
The structures of the three principal groups of pigments in algae and cyanobacteria-chlorophylls (a), phycocyanobilin (b), and carotenoids [β-carotene (c) and violaxanthin (d)]. All chlorophylls are tetrapyrroles, where nitrogen atoms are coordinated around a Mg atom.
Which is part of the light reaction in photosynthesis?
The process of oxygenic photosynthesis is divided into two stages, the so-called light reactions and dark reactions. The light reactions include light absorption, transfer of excitons, and electron and proton translocation resulting in the production of NADPH 2 , ATP, and O 2.
