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docker41 [41]
3 years ago
14

The third stage of cellular respiration is (2 points)

Biology
2 answers:
Valentin [98]3 years ago
8 0

Answer:

Electron Transport Chain

In the third stage, electrons from the NADH and FADH2 molecules move to the electron transport chain (ETC). These electrons generate the required power to move protons through the mitochondria into the space between membranes. In the final stage of cellular respiration, oxygen combines with the electrons and protons to form water.

charle [14.2K]3 years ago
5 0
The election transport chain
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Gastrin, histamine, endorphins, serotonin, cholecystokinin, and somatostatin are hormones or paracrines that are released direct
garik1379 [7]

Answer:

The correct answer is option b, that is, enteroendocrine cells.

Explanation:

The specialized cells of the pancreas and the gastrointestinal tract exhibiting endocrine function are termed as enteroendocrine cells. These cells generate gastrointestinal peptides or hormones in response to a distinct kind of stimuli and discharge them into the bloodstream for the systemic effect. These are the most varied endocrine cells found within the body.  

The intestinal enteroendocrine cells produce somatostatin, cholecystokinin, motilin, enteroglucagon, and neurotensin hormones. The G cells present within the intestine produce gastrin. In the gastric glands, the gastric enteroendocrine cells are present, which produce histamine, and others like cholecystokinin, alpha and gamma-endorphin, somatostatin, and others.  

In the islets of Langerhans, the pancreatic enteroendocrine cells are present, which produce hormones like ghrelin, amylin, somatostatin, and pancreatic polypeptide.  

4 0
3 years ago
1<br>Name the gas produced by the pondweed in the light.<br>[1 mark]​
aksik [14]

Answer:

This process of making sugar and oxygen is called photosynthesis. Pond weed uses the carbon dioxide which is dissolved in the water it is in. The amount of dissolved carbon dioxide can be varied by adding sodium hydrogen carbonate (carbon dioxide solution) to the water.

Explanation:

7 0
2 years ago
Which component is affected when a catalyst is added to a chemical reaction? the amount of substrate the activation energy the a
mote1985 [20]

The right answer is the activation energy.

The catalyst increases the reaction rate by introducing new reaction paths (mechanism), and lowering its activation energy, or activation Gibbs free energy. By doing this it can increase the speed, or lower the temperature of the reaction. It is important to note that the catalyst does not alter the total Gibbs free energy of the reaction which is a system state function and therefore has no effect on the equilibrium constant.

7 0
3 years ago
Read 2 more answers
In guinea pigs, dark hair (D) is dominant over light hair (d) and curly hair (C) is dominant over smooth hair (c). Complete a di
Alexxx [7]
P:               DdCc          x           DdCc
g:      DC  Dc  dC  dc           DC  Dc  dC  dc

1.)
 
              DC                       Dc                   dC                     dc

DC       DDCC                   DDCc              DdCC              DdCc
Dc        DDCc                    DDcc              DdCc               Ddcc
dC        DdCC                   DdCc               ddCC              ddCc
dc         DdCc                    Ddcc               ddCc               ddcc 

2.)

G= 1:2:2:1:1:4:2:2:1

3.)

F= 9:3:3:1
7 0
3 years ago
How does the recesive sickle-cell allele stay in the gene pool
Zina [86]

Answer:

Because natural selection selects for it. Thus it persists.

Explanation:

You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.

7 0
3 years ago
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