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3 years ago

Describe two major geological developments of the Mesozoic era.

1 answer:

4 0

During the Mesozoic era, all of the Earths continents were joined into a single continent that is now referred to as Pangea. this single continent was dry and desertlike and it was covered in reptiles. By the end of the Mesozoic era, Pangea broke into multiple smaller continents.
Major mountain building also occurred during this era due to the collision of tectonic plates and continents.
In addition, a large amount of igneous rock formed during the Mesozoic era.

More facts about the Mesozoic era.
the Mesozoic era is also known as the era of the dinosaurs.
the Mesozoic era is associated with three of the five largest extinction events in Earths history.

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The best classification for this new species is Animalia.

According to the six kingdom classification given by Carl Woese, all organisms are divided into 6 kingdoms.

1) Archaebacteria

2) Eubacteria

3) Protista

4) Fungi

5) Plantae

6) Animalia

As the newly discovered species is a multicellular (made up of more than one cell) organism.

Then it can only belong to Kingdom Fungi, Plantae and Animalia as the rest of the kingdoms like Archaebacteria, Eubacteria and Protista consist of unicellular organisms that are made up of only one type of cell.

Now this species is not autotrophic ( i.e. an organism that can get its own nutrition by the use of light, water, carbon dioxide, or other substances).

It means it is heterotrophic which means it can't get nutrition on its own.

Out of the Fungi, Plantae and Animalia , only fungi and Animalia kingdoms consist of heterotrophic organisms.

Now this species also does not contain chitin which is an important characteristics of Fungi.

So only option left is Animalia.

Hence, the best classification for this new species is Animalia.

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2 years ago

Pyruvate carboxylase and phosphoenolpyruvate carboxykinase catalyze reactions of gluconeogenesis that bypass the reaction of gly

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Pyruvate carboxylase and phosphoenolpyruvate carboxykinase catalyze reactions of gluconeogenesis that bypass the reaction of glycolysis that is catalyzed by pyruvate kinase.

<h3>Gluconeogenesis:</h3>

The tissues of some organs, including the brain, the eye, and the kidney, use glucose as their primary or only source of metabolic fuel. Glycogen stores become exhausted during a protracted fast or intense exercise, and glucose must be created from scratch to keep blood glucose levels stable. The process through which glucose is created from non-hexose precursors such glycerol, lactate, pyruvate, and glucogenic amino acids is known as gluconeogenesis.

Glycolysis is effectively reversed during glucose synthesis. However, gluconeogenesis makes use of four distinct enzymes to skip the three highly exergonic (and essentially irreversible) phases of glycolysis. The pyruvate carboxylase, PEP carboxykinase, fructose 1,6-bisphosphatase, and glucose 6-phosphatase enzymes are specific to gluconeogenesis. Gluconeogenesis can only take place in particular tissues because these enzymes are not found in all cell types. In humans, the liver and, to a lesser extent, the renal cortex are the primary locations for gluconeogenesis.

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2 years ago

Any factor that changes the shape of an enzyme can affect the enzyme's activity. Which of the following two factors affect an en

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Considering the choices;

A. blood glucose level and pH

B. amount of light and temperature

C. amount of light and pressure

D. temperature and pH

Answer;

D. temperature and pH

The two factors affect an enzyme's operation the most is the temperature and pH.

Explanation;

Enzymes work best at optimum pH and temperature.

At low temperature for example the enzymes are inactivated while at high temperatures enzymes are denatured.

At optimal temperature and pH; the chemical reaction rate is optimal.

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The answer is Frequency

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