The answer is D. NADH to NAD+
When no oxygen is present, anaerobic respiration occurs.It is the only way to produce ATP in this condition.NAD+ is necessary because it is converted into NADH and at the same time ADP is converted to ATP in the reaction of pyruvate synthesis from glucose.Therefore, NADH must be converted to NAD+ in order to have NAD+ always present in the cell.
RNA begins the process of transcription
Answer:
c) Electron flow from ETC generates proton gradient.
Explanation:
The true statement among the given options is “Electron flow from ETC generates proton gradient.”
(As indicated to its name, electron transport chain is responsible for the transfer of electrons and eventually it triggers the protons transfer transverse the membrane. This transfer of electron creates an electrochemical proton gradient that triggers the synthesis of ATP. Hence, at certain point electron flow from ETC is responsible for generation of proton gradient.)
Aerosols are minute particles suspended in the atmosphere. When these particles are sufficiently large, we notice their presence as they scatter and absorb sunlight. Their scattering of sunlight can reduce visibility (haze) and redden sunrises and sunsets. ——————
Sorry it is 37 words but you can fix it
Xylem and Phloem are the two vascular tissues in plants and they transport sugar, water, and dissolved minerals
