1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zina [86]
2 years ago
7

When an apple is cut, it often turns brown. What does the color change indicate?

Chemistry
1 answer:
Setler79 [48]2 years ago
8 0

Answer:

C

Explanation:

When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products

You might be interested in
What is the primary role of the United States Bureau of Counterterrorism?
zubka84 [21]

o advance counterterrorism efforts in other countries

7 0
3 years ago
Read 2 more answers
How many moles are there in 3.612 x 1024 molecules of CaO?
melamori03 [73]

The number of moles in  3.612 x 10²⁴ molecules of CaO is  6 moles.

<h3>Number of moles in the molecules</h3>

The number of moles in  3.612 x 10²⁴ molecules of CaO is calculated as follows;

6.02 x 10²³ molecules = 1 mole

3.612 x 10²⁴ molecules = ?

= (3.612 x 10²⁴ ) / (6.02 x 10²³ )

= 6 moles

Thus, the number of moles in  3.612 x 10²⁴ molecules of CaO is  6 moles.

Learn more about number of moles here: brainly.com/question/15356425

3 0
2 years ago
[ 1.3 ] What is the concentration (%) of solute in the RBC (i.e., what is the concentration of all solute molecules combined?) A
ch4aika [34]

Answer:

0.9%

Explanation:

At the instance where you add RBCs to a solution of 0.9% NaCl, they will maintain their shape as well as their size, this is simply to indicate an equilibrium. That entails that the solution is isotonic to the RBCs. This must mean that the concentration of solutes on each side must be equal otherwise osmotic pressure would force water either in or out of the membrane. Therefore, one can also safely assume that RBC's also have a solute concentration of 0.9%.

3 0
3 years ago
A form of energy produced my a machine
sergij07 [2.7K]
Sound, heat, light etc
3 0
3 years ago
What is the key building block of living tissue and ecosystems?<br><br> Hope u can help!
myrzilka [38]

Answer:

Your answer is cells. Hope this helps!

7 0
2 years ago
Other questions:
  • A thin sheet of aluminum can block _____.
    15·1 answer
  • If you are given the number of molecules in an unidentified chemical compound, can you calculate the number of moles in this sam
    9·2 answers
  • 1.42 mol sample of neon gas at a temperature of 13.0 °C is found to occupy a volume of 25.5 liters. The pressure of this gas sam
    9·1 answer
  • Plan a chromotography experiment to investigate the colours in an ink​
    11·1 answer
  • The reaction of 60.0 g of aluminum oxide with 30.0 g of carbon produced CO gas and 22.5 g of aluminum metal. What is the percent
    6·1 answer
  • How many grams of oxygen, O 2 , is consumed when 41.9 g of propane, C 3 H 8 , burns?
    8·1 answer
  • Can someone help me with this question. <br><br> I’ll mark brainliest
    6·1 answer
  • What is the specific heat of copper when heated to 221.32
    9·1 answer
  • A person rides in an elevator.
    5·2 answers
  • Seawater is around a 3% aqueous salt solution.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!