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slava [35]
2 years ago
14

In the surface waters of oceans, the two most limiting nutrients for primary productivity are

Biology
1 answer:
Darya [45]2 years ago
6 0
Nitrogen and Iron

Dissolved nutrients is one of the most important property of sea water and has a huge effect in life in the ocean. The most critical is nitrogen among the nutrients. This  plays a major role in the stimulation of the primary production by the planktons in the ocean. This can be considered as limiting because most marine life cannot live without this nutrients. Nutrients in the ocean are cycled to keep the balance known as biological pumping.


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Aminolevulinate dehydratase (ALAD ) is an enzyme that relies on zinc as a coenzyme. A zinc ion binds to the ALAD active site, wh
slavikrds [6]

Answer:

The correct option is C. It changes the three-dimensional structure of the active site so that ALAD is no longer compatible with its substrate.

Explanation:

Co-factors are molecules that are required by an enzyme to perform its function of catalysis. If a wrong co-factor binds to the enzyme then it will change the three-dimensional structure of the enzyme and the substrate will no longer fit into the enzyme. Hence, Option C is the best choice that explains the inhibition of ALAD.

Other options are false because :

Option A: The wrong co factor will not affect the substrate nor will it make it compatible for ALAD's active site.

Option B:  The wrong factor doesn't change the amino acid sequence of the protein or enzyme, rather it changes the three dimensional structure of the enzyme.

Option D : The wrong co factor won't allow the reaction to proceed at a faster rate, rather it will inhibit the reaction.  

6 0
2 years ago
Animals have life cycles that also help them adapt. How does a frog's life cycle help the frog's species?
Tatiana [17]

Answer:

yes, over time pieces of an animals life cycle can change and adapt to help them survive in different environments that doesn't happen overnight. In a frogs life cycle they develop into a frog from an egg. frogs have adapted to become what they are today and if I where to make a prediction it would be that frogs at one point lived solely in water based on the way they grow and develop in there life cycle. having a life cycle means there's room for improvement and tiny adjustments can be Made as a defense mechanism that develops over the course of many froggy life cycles.

3 0
3 years ago
Which type of macromolecule is made up of subunits that are called amino acids?
kogti [31]
Proteins are macromolecules that are made up of the subunits that are called amino acids, there are 20 fundamental kinds of amino acids present. These varying combinations of them make different proteins needed for numerous functions.
8 0
3 years ago
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Flauer [41]

Answer:

Cut open the plasmid and "paste" in the gene. This process relies on restriction enzymes (which cut DNA) and DNA ligase (which joins DNA).

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Grow up lots of plasmid-carrying bacteria and use them as "factories" to make the protein. Harvest the protein from the bacteria and purify it.

Explanation:

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Photosynthesis _____ the atmosphere
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Photosynthesis puts oxygen in the atmosphere.
 
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