D. <span>Cretaceous
</span>Angiosperms<span> evolved during the late </span>Cretaceous<span> Period, about 125-100 million years ago.</span>
B) No, many microorganisms, like those in your gut, are beneficial
As is turns out there are only about 100 different bacteria which are pathogenic. All other bacteria are completely harmless and, as this question states, some are crucial for proper human health as we exist in a symbiotic relationship with them. Bacteria in the large colon provide nutrients to us, and play an important role in the development of the immune system.
Conversion of pyruvate to phosphoenolpyruvate (PEP) is bypassed in gluconeogenesis by using two enzymes.
<h3>How does the conversion of pyruvate to phosphoenolpyruvate take place?</h3>
Pyruvate carboxylase and phosphoenolpyruvate carboxykinase (PEPCK) are two different enzymes that work together to catalyze a two-step process that bypasses the glycolytic stage mediated by pyruvate kinase.
The common metabolite of these enzymes is oxaloacetate.
The steps to convert pyruvate to phosphoenolpyruvate are as follows:
- In the mitochondrion, pyruvate is converted to oxaloacetate by pyruvate carboxylase.
- In the cytosol, malate or aspartate is formed from oxaloacetate and is then converted back to oxaloacetate.
- Oxaloacetate is changed into phosphoenolpyruvate by the enzyme phosphoenolpyruvate carboxykinase.
- Phosphoenolpyruvate reverses the processes of glycolysis to produce fructose 1,6-bisphosphate.
Learn more about gluconeogenesis here:
brainly.com/question/28163008
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Answer:
Explanation:
I'm thinking they are a rare animal due to there size,weight,how fast they can travel,and strength.
Example: Python's are known as the longest species of snake,they can grow to be 30 feet long,and can travel 1 mile per hour on just flat ground.