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beks73 [17]
3 years ago
11

The respiratory system is best described as The system which removes wastes from cells and exhales them from the body. The syste

m which delivers oxygen directly to cells and takes away carbon dioxide. The system which provides the ability to burn all nutrients in the cells. The system which delivers oxygen to the bloodstream and takes away carbon dioxide.
Biology
1 answer:
mart [117]3 years ago
8 0

Answer:

Option (4).

Explanation:

Respiratory system may be defined as the system involves in the exchange of gases between the tissue, lungs and the outside environment. The respiratory system involves nose, mouth, larynx, trachea, lungs, brochi, alevoli and alveolar ducts.

The oxygen is inhaled in the body and carbon dioxide is exhaled out from the body.  The oxygen is transferred into the blood stream by binding of oxygen with hemoglobin. The oxygen is diffused in to body due to the partial pressure difference of oxygen and carbon dioxide.

Thus, the correct answer is option (4).

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During a scientific investigation, which step will a scientist most likely perform first?
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Answer:

collect and organize data

Explanation:

you cant come up with a conclusion without data. And you most certainly cant have results in the first step.

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In which two ways will a dog contribute to the carbon cycle?
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He will let CO2 out also when he poops he lets out CO2 too.
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4 years ago
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How would both the results of the hershey–chase experiment and conclusions drawn have been different if the viral dna had been a
Gnesinka [82]

Answer:

The bacterial pellet would have contained both isotopes, making it unclear which substance was the genetic material.

Explanation:

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4 0
3 years ago
If you lined up human skin cells side-by-side, how many would fit along the length of the paperclip in the sample problem above?
dimaraw [331]

Hi,

You did not provide the length of paper clip but i searched this exercise to find the length of the paper clip as So, a small paperclip measures 3.0 cm so i will answer your question according to this length.

The size of a human cell is around  30um and the question is asking that how many would fit along the length of the paper clip measuring 3cm.

                              3 cm = 30000 microns

                                          = 30000/30

                                           = 1000 cells.

So, if we line up 1000 human skins cells side-by-side, they would fit along the length of the paperclip.

Note: <em>If the length of paper clip is different in your excercise like 1 cm etc, simply multiply the 1 with 10000 and divide the resultant value with 30, this way you can get cell number for the length of any clip.</em>

Hope it helps!


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