What did London build in the 19th century in response to a deadly cholera outbreak traced back to a contaminated water pump?

Examine the animal cells as they are each in a specific phase in their life cycle. Then, identify the phase and what is occuring

Sveta_85 [38]

The life cycle of an animal cell consists of two phases called interphase and mitosis.

The interphase is characterized by the moment in which the cell is in intense methadological activity. At this point, it is possible to see that the cell has increased in size and has become wider and more robust. This phase is divided into three sub-phases called G1, S and G2.

In subphase G1, it is possible to observe that the cell is causing the synthesis of RNA and proteins on a large scale,

In subphase S, it is possible to observe that DNA division is taking place.

In the G2 subphase, it is possible to visualize that the cell is forming microtubules of the mitotic spindle. In addition, RNA and proteins are produced, but in lesser quantities.

After interphase, mitosis begins, which is the period of cell division, where two daughter cells identical to the mother cell are generated. Mitosis has the following phases: prophase, prometaphase, metaphase, anaphase and telophase.

In the prophase, it is possible to notice that the chromosomes were duplicated and formed pairs of chromosomes (the sister chromatids). In this phase it is also possible to see the condensation of the promatin, the formation of the mitotic spindle and the disappearance of the nucleolos.

In the first phase, it is possible to visualize that the chromosomes have become condensed and are connected by the poles and not by the middle anymore. At this stage, the nuclear membrane also disappears.

In the metaphase, it is possible to visualize that the chromosomes move to position themselves in the cell equatorial plane (sister chromatids are still formed).

In anaphase, it is possible to visualize the separation of the sister chromatids, generating child chromosomes, which are separated and moved to opposite ends in the cell. At that point, the cell takes on an elongated shape. Child chromosomes form pairs and look the same as normal chromosomes.

In telophase, it is possible to visualize the formation of new nuclei at each end of the cell. The spindle microtubules are destroyed, the comosomes are decondensed and the cell is ready to be divided.

8 0

3 years ago

Suppose a friend says that we don't need to worry about the rising temperatures associated with global climate change. Her claim

8090 [49]

Answer:

Option-A

Explanation:

In the given question, the person predicts that if CO₂ level in the atmosphere will be increased then the phytoplanktons will grow more and the atmospheric carbon will be absorbed and will be fixed.

This statement juts seem like assumptions and if we consider this as a hypothesis then the facts will not be in favour of this hypothesis.

In the present day, the CO₂ level has already increased but the plants are not been able to utilise the Carbon dioxide and reduce global warming as the carbon uses free carbon from the atmosphere only and not bound carbon.

Thus, Option-A is correct.

7 0

3 years ago

WILL GIVE THE BRAINLIEST AND 99 PTS IF SOMEONE ANSWERS FIRST!!!!

cupoosta [38]

Answer would be D. The ecliptic would be path the Sun appears to move during the day.

D.The moon’s orbit must cross the plane of the ecliptic

5 0

3 years ago

Which of the following is involved in weathering

qaws [65]

Weathering can be caused by rain,snow,heat,and as well as wind.

7 0

3 years ago

Read 2 more answers

Can small trees contribute oxygen?

il63 [147K]

Yes, because even though other trees produce more oxygen, the small trees will still produce some oxygen. On top of this there are more small trees than big trees, so even though they make less oxygen, in whole they end up making more when added together!

7 0

3 years ago