Answer:
can you upload the question again..coz some part are not showing
Answer: My favorite song is see you again, That is my favorite I am not sure that I have another favorite song
Explanation:
The question is incomplete. The complete question is:
Question: Why do organisms without oxygen need to convert pyruvate to lactate?
A) because pyruvate is toxic to the cells
B) in order to regenerate NAD+
C) in order to use lactate in the citric acid cycle
D) because lactate is needed to produce ATP
Answer:
B) in order to regenerate NAD+
Explanation:
Kreb's cycle and electron transport chain (ETC) are the aerobic stages of cellular respiration. ETC regenerates NAD+ and FAD+ by oxidation of NADH and FADH2 produced during glycolysis and Kreb's cycle. Here, oxygen serves as the terminal electron acceptor.
Glycolytic reactions use NAD+ as an electron acceptor and produce NADH. Therefore, a constant supply of NAD+ is required to sustain glycolysis. In absence of oxygen, ETC cannot occur and organisms convert pyruvate into lactate. Pyruvate is reduced in lactate and NADH serves as the electron donor. Thereby, lactate fermentation regenerates NAD+ to continue the process of glycolysis.
Answer:
It fuses with and becomes part of the plasma membrane.
Explanation:
Exocytosis -
Exocytosis is the process of expelling out the substances from the cell . It also helps in the cell transport and cell signalling process .
In this process a large amount of molecule are released and making it a form of the bulk transport .
In this process , the secretory vesicles are then carried to membrane of the cell and then their contents are secreted into the extracellular environment .
Answer:
Plants perform photosynthesis to produce glucose.
Explanation:
Glucose is used by plants for energy and to make other substances like cellulose and starch.
