Answer:
The correct answer is - 4.1 billion years ago.
Explanation:
In the question, there is a timeline given based on the fossils evidence and on the base of this timeline, it is given that the earth formed around 4.5 Billion years ago. Soon after the earliest water, the first living unicellular single-celled organism found which is dated around 4.1 billion years ago.
It has appeared soon after the earth formed itself and after a billion years later the first photosynthetic organism occurred.
Answer:
d. less than 100% of the energy captured from sunlight is transformed into potential energy in the form of a hydrogen ion gradient and then into potential energy in the form of covalent bonds
Explanation:
Photosynthesis is process utilized by plants, several bacteria and protists to convert the light energy to chemical energy. So they utilize the photosynthesis as the powerhouse for the energy production. Heterotrophs like human that cannot synthesize their own food, use this converted form of energy by autotrophs.
During the light reaction of photosynthesis the photons from light are absorbed by photosystem I and II. These photons excites the electrons which flow through the electron transport chain from higher potential to lower potential. These electrons release the energy while moving from higher potential to lower potential which is utilized by H+ pump to pump the H+ to lumen of plastids from stroma and of course not the 100% energy is utilized some of the energy dissipates. . So this process causes the accumulation of high potential H+ ions across the membrane. These H+ ions are utilized for the production of ATP by ATP synthase complex when they flow back to lower potential across the membrane through ATP synthase complex.
The ATP and NADPH produced from light reaction are utilized to combine carbon molecules during dark reaction. The covalent bond is used to combine the carbon molecules and we know that combining carbon molecules stores energy in the form of covalent bond.
Answer:
I believe its RNA
Explanation:
RNA is the new copy of DNA
Answer:
Transpiration is the process of water movement through a plant and it’s evaporation from aerial parts, such as leaves, storms and flowers. Water is necessary for plants but only a small amount of water taken up by roots is used for growth and metabolis.
Water loss is a problem that occurs.
Explanation:
While an open stoma is neccesary for the plant to undergo photosynthesis, it comes with a negative side effect: water loss. Over 95% of a plant’s water loss occurs through the storm via water vapor.
Answer:
Please look at the explanation section
Explanation:
In the oxidative phase of the pentose phosphate pathway, NADPH molecules and ribose-5-phosphate molecules are created. The function of NADPH molecules is to build other types of molecules. For example, RSP sugar is used for the production of DNA and RNA creating S-phospho-D-ribose alpha-1 pyrophosphate, and, if there is an excess of ribose-S-phosphate, said excess may not be used to biosynthesis and therefore it is transformed into other sugars that can be used by the cell for metabolism.
