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KATRIN_1 [288]
3 years ago
13

The cell theory states that all cells arise from existing cells. Which scientist first

Biology
1 answer:
horsena [70]3 years ago
4 0

Answer: C. Theodore Schwann

Explanation: The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.

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Use the principles of diffusion to explain why oxygen molecules in the tissues of the lung go into the blood
Keith_Richards [23]

Answer:

Oxygen molecules in the tissues of the lung diffuse into the blood because the concentration of oxygen in the lung's tissues is more than the concentration of oxygen in the blood.

Explanation:

Diffusion is the movement of molecules from the region of higher concentration of the molecule to the region of lower concentration of the same molecule. Molecules in diffusion move <em>downward the concentration</em> <em>gradient</em> created by difference in concentration between two regions until an <em>equilibrium (equal concentration in the two regions)</em> is established.

Oxygen molecules diffuse into the tissues of the lung when an organism breathes-in during the process of breathing. The molecules in the now oxygen-rich tissues eventually start diffusing into the blood in the lung because the blood passing through the lung is always de-oxygenated or has lower oxygen concentration compared to the tissues of the lung.

Oxygenated blood moves into the heart, pumps round the body by the heart, gets depleted of oxygen and eventually find its way back to the lung where the process is repeated.

Diffusion of oxygen from the tissues of the lung into the blood will keep happening as long as oxygen keeps getting dissolved into the lung's tissues and an equilibrium is yet to be established between the tissues and the blood.

8 0
3 years ago
WILL GIVE A BRAINLEST
Volgvan
I think the best answer is plant growth. My evidence for this is that to hot or to cold would kill them but if warm andwet environment is perfect to grow 
3 0
2 years ago
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Describe the relationship among producer, herbivore and carnivore.
olasank [31]
The herbivore eats plant and the carnivore it’s meat each one eats one specific thing meaning that on a food feb as long as they keep doing what they are doing it doesn’t mess the environment around them
7 0
3 years ago
Pls me asap i took notes but couldn't find the note for this one
mamaluj [8]

Answer:

The problem needs to be stated at the beginning of the process.

Explanation:

Conclusions are formed at the end.

It is VERY important to form a hypothesis.

And data can be analyzed many many ways.

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3 years ago
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artcher [175]
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5 0
2 years ago
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