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HACTEHA [7]
2 years ago
5

What is air pressure? How is it measured?

Biology
1 answer:
Volgvan2 years ago
7 0
Atmospheric pressure is sometimes known as  barometric pressure. Air pressure is <span>exerted by the weight of </span>air<span> in the atmosphere of our planet Earth. 

Air pressure is measured in an instrument called</span><span> barometer.</span>
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"Cells in the lining of the stomach produce a protein called pepsinogen. When this protein is released into the chamber of the s
Sergio [31]

This is an example of Precursor gene regulation (protein translation) type of eukaryotic gene regulation.

<u>Explanation:</u>

The source which breakdown proteins into smaller amino acid is pepsin and generated as top cells within stomach lining or membrane, responsible for pepsinogen emission inside stomach. It is represented as zymogen having an extra 44 amino acids linkage as its primary structure. Hydrochloric acid (HCl) releases this zymogen which is emitted from the parietal cells in the stomach lining.

Once food is consumed, the hormone gastrine and the vagus nerve cause the secretion of both pepsinogen and HCl from the stomach lining. Hydrochloric acid induces an acidic environment that allows pepsinogen to unfold in an autocatalytic manner and thus generates pepsin the active form.

4 0
3 years ago
Producers are autotrophic. That is, they are able to feed themselves by converting carbon dioxide from the air and light energy
sleet_krkn [62]

Answer: definetly A, food webs

Explanation:

the other options are not even related to organisms

8 0
2 years ago
"an average human has a heart rate of 70 beats per minute. if someone's heart beats at that average rate over a 70-yr lifetime,
olya-2409 [2.1K]
Given that an average human has a heart rate of 70 beats per minute and if one is to have a 70 year life span, the number of times it will beat is 2,575,440,000 times. This was computed by multiply 70 years by 365 days/year x 24 hours/day x 60 minutes/hour x 70 beats/min. Thus, the heart will beat numerous times before it finally stops.
4 0
3 years ago
Read 2 more answers
According to the PHS, a "significant financial interest" includes royalty income paid to an investigator and its disclosure is r
Snezhnost [94]

According to the PHS, the term "significant financial interest" includes royalty income paid to an investigator except if that income is from the investigator's current employing institution.

5 0
2 years ago
Which of the following are among the most common second messengers?
frosja888 [35]

Answer:

The correct answer would be calcium ion and cAMP.

Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.

The secondary messengers can be classified into three major class:

  1. Cyclic nucleotide for example cAMP (cyclic adenosine monophosphate), cGMP (cyclic guanosine monophosphate)
  2. DAG (diacylglycerol) and IP₃ (inositol triphosphate)
  3. Calcium ions (Ca⁺⁺)  

Hence, from the given options, calcium ion and cAMP would make the correct choice.

3 0
3 years ago
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