The energy provided bycoal, oil, and gas comes from photosynthesis carried on by plants ofearlier times and preserved down through the ages, to be released bycombustion in modern industrial processes.
These organelles could be bound to the endoplasmic reticulum or free-floating in the cytoplasm.
The diagram clearly suggests ER to be the second largest cell organelle after mitochondria since these form a series of interconnecting, flattened tubular tunnels or sacs; rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER).
Photosynthesis in green plants harnesses the energy of sunlight toconvert carbon dioxide, water, and minerals into organic compoundsand gaseous oxygen.In addition to the green plants, photosynthetic organisms includecertain protists (such as euglenoids and diatoms), cyanophytes(blue-green algae), and various bacteria.
Printout A plant is a member of the kingdom Plantae, a living organism that utilizes photosynthesis, a process in which energy from sunlight is converted to chemical energy (food).
The process inphotosynthetic protists and cyanophytes resembles that in greenplants; it differs in the photosynthetic bacteria in that compoundsother than water serve as a reactant and oxygen is not produced.
Most of the energyreleased both by the burning of fossil fuels and by the metabolism ofliving cells is given off as heat and must be replaced by thecontinued input of radiant energy from the Sun.The principal organic products of plant photosynthesis arecarbohydrates.
These organelles provide the energy required for all cellular activities by breaking down complex carbohydrates prepared during photosynthesis (glucose to energy).
Ribosomes is the main site for protein synthesis since these are rich in ribonucleic acids.
Most leaves are flat and contain ; their main function is to convert energy from sunlight into chemical energy (food) through photosynthesis.
- the part of the stem of a plant from which a leaf, branch, or aerial root grows; each plant has many nodes.
Overall, it is the reverse reaction of photosynthesis, but chemically, the steps involved are very different.)
The cell wall material differs with plant species and gives a definite shape (elongated, oval, round, rectangular, or squarish).
Another peculiar organelle present in plant cells are the plastids.
This thin membrane is made up of cellulosic fibers and proteins, and its main function is to transport materials through cells.
The cell wall is a distinguishing part that is not present in animals.
The excess energy not used up in the chemical reactions isstored as chemical energy in the organic products formed.The rate of photosynthesis is dependent on the followingenvironmental factors: light intensity, temperature, and theavailability of carbon dioxide, water, and certain minerals.
Allphotosynthetic organisms--with the exception of a minor group ofbacteria, the halobacteria--contain the light-absorbing pigmentchlorophyll, which plays a key role in the transfer of energy fromlight to chemical compounds.Photosynthesis is the fundamental process that maintains life onEarth.
The rate alsovaries with the plant species and its physiological state.Photosynthesis is not a single process but consists of a number ofphotochemical and enzymatic reactions.
You can go through the nuclear membrane function for a better understanding.
As seen from the diagram above, the cytoplasm of a cell is the ground substance or the matrix, which is a jelly-like material in which all the cell organelles are embedded and suspended.