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Sonja [21]
3 years ago
15

What is the basis for most ecosystems?

Biology
1 answer:
LUCKY_DIMON [66]3 years ago
6 0
C. The sun, this gives energy and to animals and food for plants
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A bacterial culture is being tested for its ability to reduce nitrate. After incubation and growth of the bacteria in nitrate br
skelet666 [1.2K]

Answer:

All this combination of reactions is summarized in that the bacteria reduced nitrate, that is, they added protons to said compound, giving nitrite as a product.

By promoting the appearance of nitrite and that it increases in its concentrations when the zinc dust is thrown away, it becomes reddish since there was a change in pH, that is, the medium was acidified.

Explanation:

Some bacteria take nitrate as a source and end up generating an oxide reduction reaction that gives nitrite as a product, if this reaction advances in a chain, that is, the nitrite is reduced after the nitrate, the product in the future would be ammonia

8 0
3 years ago
Which of these will diffuse across a plasma membrane? select one:
Alina [70]
<span>d. neither of these will cross a plasma membrane.

Glucose cannot diffuse across a plasma membrane as it is polar. Since the question doesn't specify the type of diffusion, simple diffusion is assumed.

If you count facilitated diffusion, then A is the answer.</span>
7 0
2 years ago
What are the most useful bones for determining biological sex, and age of a skeleton? Answer each one individually, they are not
Anna35 [415]

Answer:

The human pelvis Is use for determining sex of skeletal remains. The woman pelvis provide optimal space for birth canal which is shown in the morphology and relationship of it's different part. Skull is also use.

The fourth ribs is use for determining the age of skeletal remains.

Explanation:

The human pelvis is use to determine the biological sex of skeletal remains. The woman pelvis is wider than man's and it provide space for birth canal.

The fourth ribs is use to estimate the age of skeletal remains as the cartilage between the ribs and sternum gradually turn as time goes on. The features of the head can also be use to estimate the age of skeletal remains.

8 0
2 years ago
What are the ecological impacts of wetland regions?
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3 0
2 years ago
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A mutation results in the production of much less DNA ligase than normal. What would be a likely consequence?
Ronch [10]
Answer: <span>DNA replication wouldstill  occur, but replication of the lagging strand would take much longer than normal.

</span><span><span>DNA ligase is the enzyme that binds the Okazaki fragments in the lagging strand. </span>Since the mutation resulted in much less DNA ligase, there would be less of this enzymes working for the replication process. Doesn't mean it can't happen, but it will be slower.
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6 0
3 years ago
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