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Natasha_Volkova [10]
3 years ago
7

What is the purpose of the G1 and G2 phases?

Biology
1 answer:
wel3 years ago
3 0

Answer:

Explanation:The G1 and G2 phases are times of growth and preparation for major changes. The synthesis phase is when the cell duplicates the DNA in its entire genome. The three phases of interphase also allow for checkpoints to ensure that things are working properly.

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Por qué crees que los huevos con cáscara se llaman amnióticos?
Svetach [21]

El huevo amniótico de reptiles y aves está rodeado por una cáscara externa resistente que protege al huevo de los depredadores, patógenos, daños y secado.

4 0
3 years ago
"Generally describe the series of events via which pyruvate is further processed after glycolysis (assume that this is in the pr
kobusy [5.1K]

Answer:

The product of glycolysis is two molecules of pyruvate. It is a three-carbon compound. This pyruvate again undergoes oxidation in the cytoplasm. This process is called pyruvate oxidation which produces Acetyl CoA. The Acetyl CoA is a two-carbon molecule.

Acetyl CoA again used for the citric acid cycle. This is also called as Kreb's cycle / TCA cycle. Because citric acid has 3 carboxylic groups. The acetyl coenzyme produces NADH, FADH2, ATP. The citric acid cycle occurs in the mitochondrial membrane. This is an 8 step process. The first product is citric acid. The other products of each step are isocitrate, alpha-ketoglutarate, succinyl CoA, succinate, Fumarate, L - malate, and Oxaloacetate (OAA).

Another process of aerobic respiration is the electron transport chain ( ETS). Here the energy stored in NADH, FADH2 in the citric acid cycle are utilized. It is a chain of electron carriers. ETS occurs in the inner membrane of mitochondria.  

In short, the glucose splits by glycolysis and produces ATP, NADPH, and final product pyruvate. The pyruvate is oxidized and forms acetyle coenzyme. This is used in the TCA / citric acid cycle. In this process also NADH, FADH2 which forms electrons are produced. Theses electrons are carried by different electron carriers and accepted by oxygen.

In the process of pyruvate oxidation 6 ATP, and in Kreb's cycle 18 ATPs, in ETS, 4 ATPs are produced. In addition to this in glycolysis produces 4 ATPs. The total number of ATP in aerobic respiration is 32 ATP.  

8 0
2 years ago
Give an example of rocks you have seen that were changed by nature processes?
Phoenix [80]
Petrified wood is a rock that i have seen 



6 0
3 years ago
The points of muscle attachment are known as the
Alik [6]

Answer:

Origin and Insertion

Explanation:

The origin is the point of attachment of a muscle that remains relatively fixed during contraction.

The insertion is the point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.

3 0
2 years ago
Coyotes and dogs have been placed into different species. however, they can mate and produce viable, fertile offspring. what wou
Ostrovityanka [42]
That fact can be explained by the similarity in their genes. 

Dogs and coyotes are from the same class, family and genus (Mammalia, Canidae, Canis).
This is almost enough for their offspring to be viable. But if the DNA is similar (which it is) offspring the chances of viable and fertile offspring is high almost at 100%.

Hope it helped,

Happy homework/ study/ exam!
8 0
3 years ago
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