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balu736 [363]
3 years ago
9

Describe a chemical indicator. What is it? What is it used for? How does it work?

Biology
1 answer:
insens350 [35]3 years ago
4 0
A chemical indicator is a substance that changes color when you an acid to it. it is used to test the acidity in water, soil, etc.

i havent learned how it works yet , but ill try to figure it out for you
 
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Different forms of a given gene are known as
yulyashka [42]

Answer: alleles

Explanation:

Alleles are different forms of a given gene. Alleles are mutated forms of a given gene which controls a particular trait. For instance, the gene that codes for hemoglobin is denoted with the letter A but the gene has another variant denoted by S. In abnormal hemoglobin S (sickle hemoglobin), glutamate is replaced by valine at position 6 in the amino acid sequence of the two beta chains of hemoglobin. This change in the amino acid sequence causes the red blood cells to have a sickle shape resulting in sickle cell disease. Therefore hemoglobin A and S are alleles of a given gene.

6 0
4 years ago
Which is a way that a human responds to
Xelga [282]

Answer:

its either a or b i don't know exactly cuz I didn't learn this but I tried looking it up and it didn't work

4 0
3 years ago
Help i Will give brainliest needs to be submitted today
Valentin [98]
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6 0
4 years ago
In C3 plants the conservation of water promotes _____.
bija089 [108]

Answer:

The correct answer is d. photorespiration

Explanation:

In the C3 plant, the Rubisco enzyme is important that fix CO2 into organic molecule by binding with CO2. Rubisco can also bind to oxygen when the oxygen concentration increases in cells which leads to the loss of fixed CO2  and waste of energy which is called photorespiration.

So when stomata are open CO2 comes in and O2 goes out of the cell which maintains the high CO2 concentration in the cell but during hot days C3 plants close stomata to prevent water loss.  

So closing of stomata decrease the intake of CO2 and increase the oxygen concentration inside the cell. So in increased temperature and high oxygen concentration, the rubisco enzymes bind to O2 and promote photorespiration.

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3 years ago
Scientists have been experimenting with gene therapy, which often involves the use of bacteria or viruses to deliver new or modi
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