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topjm [15]
3 years ago
7

Ryan, an 8-year-old boy, has the habit of swallowing toothpaste. as a result, his teeth have become discolored. it can be said t

hat ryan's teeth condition is caused by:
Biology
1 answer:
lorasvet [3.4K]3 years ago
6 0
The answer to this question would be: excess fluoride intake

The toothpaste has a high amount of fluoride and will increase the blood fluor level. Excess fluoride intake in children can cause fluorosis which was the brown staining of teeth because fluor is deposited in the growing teeth. Fluorosis can happen in children with <8-year ages.


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Which part of the neuron below is indicated by the arrow, and what is its function? The long section of a neuron that includes s
MaRussiya [10]

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4 0
2 years ago
When most proteins, fats, and carbohydrates are digested completely, they are converted to end products that?
nadezda [96]
The choices can be found elsewhere and as follows:

1.are soluble and can easily pass through cell membranes 
<span>2.contain long chains of amino acids and fatty acids </span>
<span>3.contain atoms of carbon, hydrogen, oxygen and nitrogen </span>
<span>4.are a direct result of dehydration synthesis
</span>
I believe the correct answer is option 1. When most proteins, fats, and carbohydrates are digested completely, they are converted to end products that are soluble and can easily pass through cell membranes. So as to distribute the nutrients needed in different parts of the body.
3 0
3 years ago
Read 2 more answers
Which model did scientists develop to describe the cell membrane
kap26 [50]
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7 0
3 years ago
Which of the following statements about DNA isolation from E. coli is not correct?
Ulleksa [173]

Answer:

The correct answer is c. detergent is used to break apart plant cells to extract DNA.

Explanation:

Here we are talking about DNA isolation in E.coli and detergent is used to break apart the bacterial cell membrane by destabilizing the cell membrane. Detergent disintegrates the proteins present in the cell membrane which causes the rupture of membrane releasing the cell extract outside the cell.  

Detergent is not able to break plant cell because it is made up of cellulose and require blending or mashing. Detergent can only be used to disintegrate the cell membrane because only cell membranes contain lipids and proteins.

Hence, the correct answer is c.  detergent is used to break apart plant cells to extract DNA.

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2 years ago
Sweat on the surface of the skin can cause body odor. true false
Ainat [17]
I think it's True but I don't know for sure..

5 0
2 years ago
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