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viktelen [127]
3 years ago
15

How much nicotine to kill half of humans who weighed 172 pounds

Biology
1 answer:
muminat3 years ago
6 0
I don’t know maybe 29 or I have no clue
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Why can we manufacture insulin for humans with bacteria?
Lilit [14]

Bacteria also carry equal number of Amino Acid. So, we can manufacture human insulin with bacteria

Explanation:

Human insulin is made in the lab inside with the help of common bacteria. Yeast is also used for making the insulin. The most common bacteria Escherichia coli is most common bacteria which is used for making insulin.

Researchers needs that human protein which is responsible for making bacteria. They make it through amino acid squeezing machine that is helpful for synthesizing the DNA. Manufacturers know exact order of insulin’s amino acid. There are twenty common amino acids which are helpful for making human insulin.  

3 0
3 years ago
What is the function of the Sertoli cells in the male reproductive tract?
miss Akunina [59]
Well Sertoli cells<span> keep the germ </span>cells<span> that start the process healthy and nourished. </span>
6 0
3 years ago
In complete sentences describe the energy flow between the Sun, the Earth, and space.
evablogger [386]

Answer: The energy from the sun passes through space in the form of invisible waves to the earth surface. It heats up the earth’s surface causing variation in climate.  

Explanation:

The amount of incoming energy from the Sun decides the weather and climate of earth. If the energy that is incoming and outgoing on the earth, then climate is in equilibrium. The balance is depending on the scattering, absorption, reflection and transformation of energy.  

The energy from sun passes through space and reaches the earth’s surface. On reaching surface, the solar energy warms the atmosphere releasing heat energy which gets transferred throughout the planets system by radiation, conduction and convection. Conduction happens in the atmosphere within first several millimeters close to the surface. This heated air expands as it is dense and rises causing transfer of heat to atmosphere through convection process. It results in formation of clouds.

The radiant energy from sun is transmitted via space in form of invisible waves. But much of the suns radiant energy, is transmitted back to atmosphere. The objects on earth like land, plants, animals absorb radiant energy as heat of which one third gets re-radiated back to atmosphere that is absorbed by carbon dioxide and water vapor. The atmosphere radiates heat energy back to earth increasing the earth temperature. This trapping of radiation is greenhouse effect.  

The thermal energy obtained by convection currents are responsible for wind, cloud formation, and weather formation.  The hydrosphere that comprises of 70% of earth’s surface absorbs solar energy.  

On the basis of the above explanation is:  

The energy from the sun passes through space in the form of invisible waves to the earth surface. It heats up the earth’s surface causing variation in climate.  

3 0
3 years ago
Describe the characteristics of a river that would be a good source of freshwater (2-3 sentences)
Anton [14]
A river that comes from rain, glaicers etc would be a good example of fresh water rivers. Cause the water is coming from something that is most likely been unthouched by man or has been filterd and cleaned from minerals in the ground.
8 0
3 years ago
Read 2 more answers
List the functions of water in the body. Why is it important to maintain good fluid balance inside and outside of the cells
Bezzdna [24]

Answer:

According to scientists , water occupies up to 60 % of the human body .

The importance of water in the human body are ;

  • Transport
  • Formation of bodily fluids i.e. saliva
  • Digestion
  • Regulates body temperatures
  • Circulation of nutrients

Explanation:

The reason why it is important to maintain good fluid balance within and without he cells is because , It can dissolve various elements to make then easily absorbed into other system .There are many fluids which rely on water for volume e.g. blood which is the main component of the circulatory systems , water also regulates the temperature  and heart pressure ,

Through electrolysis , fluid balance in the cells can be achieved and it also helps to generate nerve impulses  .

5 0
2 years ago
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