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Mrac [35]
2 years ago
7

Which substance acts as a buffer in natural water?

Biology
2 answers:
baherus [9]2 years ago
7 0
B. minerals and salt
3241004551 [841]2 years ago
5 0

Answer: Option (B) is the correct answer.

Explanation:

When an acid or alkali is added to a solution and the solution does not or slightly changes the pH then it is known as a buffer solution.

Natural water has pH 7 which shows that natural water is neutral. Natural water also contains various minerals and salts which does not affect its pH.

Therefore, minerals and salts acts as a buffer in natural water.

Whereas when all the minerals and salts are removed from natural water then it results in the formation of distilled water. That is pH of natural water changes.

A pH indicator has no role in natural water as a pH indicator helps to know the pH of a solution. And sulfuric acid being an acid changes the pH of natural water.

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How do I identify sample, independent and dependent variables?
Mamont248 [21]
A sample is a random, unbiased selection out of a larger group. An independent variable is one that is changed as to see how it will affect the dependent variable in an experiment. 
Hope that helped.
4 0
2 years ago
What kind of fossil would a gastropoda shell must likely be?
DiKsa [7]
You didn't give any answer choices (i'm answering this through research and what i already know)

the first is fossilized dung, and that's not generally gastropod shells. A carbon film would be something thin, seeing as it's a film, and gastropods aren't that. A gastrolith is a stone swallowed by an animal to help with digestion, and that's also not a gastropod. 

<span>Gastropod fossils may be molds, but usually aren't. Still, they can be. It's a better answer than; film or stomach stones.</span>
8 0
3 years ago
A gene has 2 alleles, R &amp; B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls loo
irakobra [83]

Answer:

5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)

6.) Frequency of R: 0.5

7.)Frequency of R: 0.5

8.)Frequency of R: 0.375

Explanation:

5.) If R and B code for the different forms of the same protein then they are only a few possible out comes

6.) First calculate the total alleles in population

allele R= 40

Allele B=40

total allele = R+B= 40+40

=80

Now to find allele R frequency is:

(Total R alleles) / (Total allele in pop)

40/80=

0.5

7.)Calculate the total alleles

Alleles from for R

RR= 10

R=10x 2= 20

Multiply the value by 2 because there are 2 R alleles present in

RB=20

R=20

Number doesn't change there is only 1 R allele

Total R=20+20

=40

Alleles For B

BB=10

B=10×2

=20

Same thing here, two B alleles together so multiple by 2

RB=20

B=20

Total B= 20+20

=40

Total alleles in pop add

40+40

=80

Frequency of R

Total of R/Total Alleles

=40/80

=0.5

8.)Repeat the same thing in 7 but use different numbers

RR=10

R=10x2

=20

RB=10

R=10

Total R= 20+10

=30

5 0
3 years ago
Fat and atp are different molecules tgat store energy compare the functions of these molecules in terms of energy storage
Julli [10]

Answer:

Fats and ATP are both energy molecules.

ATP is the source of energy which is directly used by each cell to carry out different functions. All cells use energy in the form of ATP. The mitochondria makes ATP by the process of cellular respiration whenever it is required by the body. ATP is not a stable molecule hence energy cannot be stored in this form.

Fats are long term energy storage molecules. Fats are stable molecules hence they can be used for long term energy storage.

4 0
3 years ago
Select all the correct answers.
solong [7]
I only know 2 and 3 are correct. I’m not sure about the last one.
7 0
3 years ago
Read 2 more answers
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