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agasfer [191]
3 years ago
9

Some of the microbes that often invade other organs of the body are rarely found in the stomach. The reason for this is the pres

ence of HCl. True False
Biology
1 answer:
rewona [7]3 years ago
8 0

Answer:

True

Explanation:

Hydrochloric acid contributes to the acidic pH in the stomach that inhibits and kills some harmful bacteria that enters the body via the food we ingest. HCL is secreted into the lumen by the parietal cells found in the inner layer of the stomach called the mucosa.

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Inpropper fractions​
dexar [7]

Answer:

If you r asking WHAT an Improper fraction is  

Explanation:

An improper fraction is a fraction in which the numerator (top number) is greater than or equal to the denominator (bottom number). Fractions such as 65 or 114 are “improper”.

5 0
3 years ago
Read 2 more answers
The map shows the main streams and the rivers near City A and City B, as well as the nearby factories and farmland. The arrows i
AveGali [126]

Answer:

A. City A because there are no pollution sources upstream.

Explanation:

Water pollution is th contamination of water. There are many means through which water is contaminated such as industrial waste, agricultural waste and domestic waste et-cetra.

City A and City B get water from sunset lake and moth lake which have factories (industrial waste) and farmland (agricultural waste) nearby them, which are responsible for the contamination of river water. due to this cities can recieve contaminated water which can affect their health.

But the quality of water in City A will be best than that of City B because according to the image, City A do not have nay upstream soooooource of pollution, as factories and farmland are located at downstream.

Hence, the correct option is A.

8 0
3 years ago
Predict the most likely outcome of culturing transformed E. coli in the presence of tetracycline.Justify your prediction.
My name is Ann [436]

Answer:

E.coli is a bacterium which is preffered for transformation due to its rapid growth and high efficiency of introduction of DNA molecules into cells.

Tetracycline is an antibiotic used to treat several infections such as cholera, plague, brucellosis, and malaria etcetra.

Plasmid is a small, extrachromosomal DNA molecule present in cell which is seprated from chromosomal DNA and have ability to replicate independently.

When a plasmid resistant to tetracycline and kanamycine is inserted into E.coli, the process is called transformation. E.coli might not be able to survive due to absence of plasmid but the transformed strains having antibiotic tetracycline and kanamycine will probably be able to survive it.

Hence, the culture of bacteria carrying plasmid will be able to survive only.

4 0
3 years ago
Name the 3 rock families?​
Elena-2011 [213]
Sedimentary, metamorphic, and igneous
4 0
3 years ago
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Ionic bonds are formed from the sharing of valence electrons.<br> A.True<br> B.False
Julli [10]
False !! covallent bond is formed by sharing ; iconic bond is formed by donation or transferring electrons !!
7 0
3 years ago
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