To understand the global systems and the changes they undergo in a better way, we can use a model to represent the various ecological processes that occur within the biosphere. One example of a model that we can use is the earth systems model.
Explanation:
When the high energy electrons move from the reactive center, they are conveyed from one chain protein to another as the energy in the electrons is harnessed to pump H+ ions from the stroma into the lamellae. The electron will ultimately reduce NADP+ to NADPH and the electrons in the reactive center will be replaced by high energy electrons from the splitting of a water molecule in photolysis. The energy of the sun is used to split the water molecule. The high energy electrons then undergo the same cycle as the previous electrons and the cycle continues.
Eventually a proton-motive force is created across the lamellae membrane. This potential energy of the high H+ ion gradient is used by ATP synthase enzyme to phosphorylate ADPs to ATPs.
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Answer: TRUE
Explanation:
The cell division that takes place during the growth and development of an organism is in an as MITOSIS. Mitosis takes place in somatic cells that is, body cells that are not involved in the production of gametes. The difference stages of mitosis were originally defined by cellular features observable through a LIGHT MICROSCOPE. These stages includes:
--> PROPHASE: when viewed under a light microscope, each chromosome shortens and thickens and is seen to consist of two chromatids. The Centriole begin to separate.
--> METAPHASE: The nuclear membrane disappears, a spindle forms, the chromosomes line up across the middle of the cell and become attached to the spindle fibres at their centromeres.
--> ANAPHASE: The sister chromatids are pulled apart to opposite ends of cell as the spindle fibres contract.
--> TELOPHASE: A nuclear membrane forms around each set of chromatids, and the cell divides into two daughter cells.
The green house effect occurs when carbon dioxide and water vapor form an invisible blanket around the globe that allows the sun's light to enter, but traps the heat. Green house effect is a process that warms the Earth's surface. When the sun's energy reaches the Earth's atmosphere, some of it is reflected back to the space and the rest is absorbed and re-radiated by greenhouse gases.
