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Free_Kalibri [48]
3 years ago
13

Which of the following is an example of convenience sampling?

Biology
2 answers:
Harlamova29_29 [7]3 years ago
7 0
Obviously is B ! :,D
lara31 [8.8K]3 years ago
5 0

The correct answer is option B, that is, a dentist surveying patients about toothpaste preference.  

Convenience sampling refers to the non-probability technique of sampling where the subjects are chosen due to their suitable availability and propinquity to the researcher. This type of sampling method is dependent upon the collection of data from the members of the population who are conveniently accessible to take part in the study.


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Answer:

One could be in the cell. The cell respires, thus producing carbon dioxide in it. So the concentration builds up in the cell. Diffusion is the net movement of particles from a region of high concentration to a region of low concentration, and the carbon dioxide concentration outside the cell is less, therefore the carbon dioxide molecules moves outs of the cell.

Another scenario is when perfume is sprayed into the air. The perfume particles collides with the air particles (lower or no concentration of perfume). This process goes on and on. This is diffusion since the concentration perfume particles collides with the less concentrated particles of perfume.

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Which part of the neuron below is indicated by the arrow, and what is its function?
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<h2><em><u>An</u></em><em><u>swer</u></em><em><u>:</u></em><em><u>-</u></em></h2>

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✯ The dendrites carry the electrical impulses from the signal receivers to the cell body.

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frosja888 [35]

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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:

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

3 0
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