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gayaneshka [121]
3 years ago
8

why does the function of the hormone oxytocin in the progression of labor during childbirth illustrate a positive feedback mecha

nism
Biology
1 answer:
katovenus [111]3 years ago
5 0
Oxytocin stimulates dilation of the cervix. As the cervical opening enlarges, this is an example of positive feedback.
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Gene expression in eukaryotes can be regulated at many different levels. List the different levels of regulation, and explain wh
Aneli [31]

Answer:

Transcription, mRNA (processing, transport, localization and stability), translation.

Explanation:

  • Transcription is regulated in two levels, though chromatin regulation (methylation and acetylation) to loose or increase histone's affinity to DNA and through cis and trans elements such as promoters, enhancers, and silencers (cis) to active/deactivate and RNA polymerase and transcription factors and co-factors (trans).
  • mRNA can be regulated using poly-A tails or 5'-caps to shorten or give them more time before they degrade, it could also be spliced to eliminate introns.
  • In the translation stage, the regulation occurs during the initiation through a scanning procedure that ensures the 40s ribosomal subunit bind correctly to the untranslated portion of RNA

Hope this information is useful to you!

4 0
4 years ago
Which activity would help decrease the greatest carbon-releasing activity in US homes?
vaieri [72.5K]

Option are not provided in the question. The complete question is:

Which activity would help decrease the greatest carbon-releasing activity in US homes?

limiting time in hot showers

wearing layers of clothing

turning off lights when leaving a room

unplugging electronics when not in use

Answer:

wearing layers of clothing

Explaination:

Increasing carbon emission in environment is one of the major cause of global warming and climate change. There are several human activities that contribute to increament in carbon-releasing such as burning of fossil fuels, industrial manufacturing and deforestation et-cetra.

Wearing layers of clothes can decrease the greatest carbon-releasing activity in US homes because the weather of US is cold and people use a lot of fossil fuel to make their surrounding warm. Wearing layered clothes will help US people to feel warm and reduce the burning of fossil fuel which is major contributor to carbon emission.

Hence, The correct option is wearing layers of clothing.

6 0
3 years ago
Read 2 more answers
Which structure is the site for reading and decoding genetic information?
Sergio [31]

nucleus is the structure responsible.

6 0
3 years ago
Read 2 more answers
How does the structure of DNA direct the formation of proteins?
zvonat [6]

Answer: During the process of transcription, the information stored in a gene's DNA is transferred to a similar molecule called RNA (ribonucleic acid) in the cell nucleus. ... A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.

8 0
3 years ago
All but which of the following can work against a viral infection
Arlecino [84]

The question is incomplete but antivirals, cells of the immune system and antibodies can work against viral infection.

<h3>What is a viral infection?</h3>

A viral infection is any disease caused by a virus that is able to infect and produce harm to a suitable host.

The immune system consists of different barriers to fight against viral infections, one of which is composed of immune cells and antibodies that work together to recognize and destroy pathogenic viruses.

For example, the cells that can work against a viral infection include cytotoxic T cells, macrophages and NK cells.

In conclusion, antivirals, cells of the immune system and antibodies can work against viral infection.

Learn more about viral infections here:

brainly.com/question/1554410

#SPJ1

6 0
2 years ago
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