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Lisa [10]
2 years ago
8

The first step in the catabolism of amino acids is the removal of the nitrogen as ammonia, forming a keto acid that can enter on

e of the carbon catabolic pathways. The alpha-keto acid pyruvate can be formed from the amino acids alanine, cysteine, glycine, serine and threonine. Consider the route for alanine catabolism. Anine reacts with to produce pyruvate and. This reaction is catalyzed by aspartate aminotransferase. alanine aminotransferase. alanine dehydrogenase. The substrate for the first step can be regenerated by reacting with NAD^+ This reaction is catalyzed by glutamate dehydrogenase. alpha-ketoglutarate dehydrogenase. alanine dehydrogenase. aspartate dehydrogenase. The coenzyme/prosthetic group required in the first reaction is thiamine pyrophosphate. biotin. pyridoxal phosphate. lipoic acid.
Biology
1 answer:
ANTONII [103]2 years ago
5 0
The coenzyme required is pyridoxal phosphate. It is a vitamins B6 cofactor required for transamination reaction.
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Confirm that the sample has both helicase and primase activities, but not the ability to synthesize DNA

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            1. Helicase enzymes that unwind and separate the DNA strand

            2. Replication factor C (RFC), a DNA-dependent ATP that acts as an activator of DNA polymerase.

           3. Proliferating cell nuclear antigen (PCNA)

           4. DNA gyrase/topoisomerase that cuts and reseals DNA strands, which is essential for DNA synthesis.

           5. Primase enzyme that synthesizes short RNA fragments called primers.

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           7. DNA ligases enzymes that form phosphodiester bonds at a single-strand break in DNA

  • A primosome is a multiprotein complex responsible for creating RNA primers on single-stranded DNA (ssDNA) during the replication process.
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Learn more in:

brainly.com/question/14674568?referrer=searchResults

6 0
3 years ago
Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All
k0ka [10]

Answer:

Behavioral adaptation

Explanation:

6 0
3 years ago
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Did the phylogenies of the different islands support the theory that one colonization followed by adaptive radiation and converg
Goshia [24]

Answer:

It depends on the graphics you have but:

Explanation:

The theory of one colonization and then radiation should see as only one group on your phylogeny, all branches come from a single point.

Now, convergent evolution means that in different islands the same morphologic pattern is seen BUT not come from the same ancestor. This means that the morphologic pattern was built under the island conditions and NOT as colonization from another island

If there is one colonization and then radiation all islands have to have their own phylogeny and same morphs on each phylogeny to be convergent.

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3 years ago
What are gametes?
valina [46]
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Which statement accurately describes a La Niña event?
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La Niña has the opposite effect than does an El Niño event. La Niña is a climate pattern that describes the cooling of surface ocean waters. It is considered to be the counterpart to El Nino, which is characterized by unusually warm ocean temperatures in the equatorial region of the Pacific Ocean.

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