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Sholpan [36]
2 years ago
6

How do index fossils help scientists?

Biology
1 answer:
qaws [65]2 years ago
4 0

Answer:

Index fossils are used by both geologists and paleontologists to study the rocks and species of the past. They help to give a relative age for the rock layers and other fossils found in the same layer.

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What happens to the genetic material before the cell divides
VladimirAG [237]

Answer:

DNA is duplicated, or copied

Explanation:

Hope this helps

7 0
2 years ago
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Epinephrine, insulin, and auxins are all examples of that help produce feedback.
JulsSmile [24]

Answer: cofactors.

Explanation:

Epinephrine, insulin and auxins are cofactors.

Cofactors are non protein substance which activate enzymes activity by increasing the rate of chemical reaction of enzymes. They are organic molecules and they assist in enzyme activity. They exist in performing some reactions the enzymes cannot perform alone.

For example, insulin activate enzyme hexokinase which phosphorylate glucose.

8 0
3 years ago
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What stage of river is the Mississippi River?
antoniya [11.8K]

Answer:

River Mississippi is at Flood stage

Explanation:

Although it was last reported on August 4,2019. That's it's above flood stage for most of 2019.

4 0
4 years ago
Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?
Alchen [17]
A. the mitochondria and chloroplasts are much different in structure than bacteria
6 0
3 years ago
A bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the or
Dima020 [189]

Answer:

There was no sulfur compound added to the medium, that could be used as an electron donor.

Explanation:

Bacteria that use light for energy requirements mean that they get their energy from photosynthesis and transferring energy through the molecules.

Bacteria play a major part in the reductive and oxidative cycle of the sulfur which is mediated by the help of photosynthetic bacteria, so the sulfur or sulfur compounds are major requirements for their growth in the habitat or the medium.

Thus, the correct answer would be- There was no sulfur compound added to the medium, that could be used as an electron donor.

3 0
3 years ago
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