Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system.
Photoautotrophs are organisms, typically a plant, that obtains energy from the sun to be able to convert inorganic materials to organic materials for cellular functions to take place such as biosynthesis and respiration. Its function is increased by the presence of the three types of pigments namely chlorophyll A and B and carotenoids because these are "enablers" of photosynthesis.
The chlorophyll serves as the stepping stone for the sunlight "energy-capture" . This pigment contains porphyrin ring through which electrons can freely to move. Since they move freely, the ring has the ability to gain or lose electrons easily thus they also have the ability to provide energized electrons to other molecules.
However, the carotenoids are accessory pigments only because they cannot directly transfer the energy from the sun to the photosynthetic pathway which means that the absorbed energy must be passed on to chlorophyll first.
Answer:
The best answer to the question: What might be a characteristic features of the phospholipid head groups? Would be: The phospholipid head groups would likely bind to each other with hydrogen bonding that would pack well and not be bulky.
Explanation:
Phospholipids are the main molecules in biomembranes. Because of their importance to cell membrane formation, phospholipids are very characteristic molecules that have two sides: one polar and hydrophilic, and one non-polar and hydrophobic. The hydrophilic side is really vital, as biomembranes, like cell membranes, are suspended in water, and therefore need to interact with it. But these phospholipids form a structure called a bilayer, meaning, it forms a sort of highly organized lattice (called a leaflet), that has two hydrophilic sides (where the heads of the phospholipids lie) and a middle that is hydrophobic (where the tails are). The perfect interaction of phospholipids with water comes from their unique polar charges in their phosphate groups, which are present in the head side (hydrophilic side) and which form ionic and hydrogen bonds with each other and water. This characteristic provides stability to the structure and permits it to carry out its function with both the outer and inner environments of cells.
Answer:
1
2
4
5
3
Explanation: because inorder for photosynthesis to be formed(glucose) water must be absorbed by phloem then stage2,4&5 proceed end with 3 as it's always against concentration gradient
