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
expeople1 [14]
3 years ago
9

It is commonly know that freshly cut fruits turn a brownish color when exposed to the air for a number of minutes (see below). T

his is due to the action of the enzyme polyphenol oxidase. It is also well known that the formation of the brown color can be prevented or slowed by chilling the fruit, boiling it, or rubbing it with lemon juice (which contains ascorbic acid). Explain why each of these three methods work to slow down the browning process.
Biology
1 answer:
Mnenie [13.5K]3 years ago
3 0

Answer: These methods works by denaturing the enzymes. The first and the second method is to change the temperature and the third method is to change the pH.

Explanation:

The browning of the fruits or vegetables takes place due to the action of the enzymes. The enzymes inside the body of the organism works under specific conditions.

These conditions are temperature and pH. Change the optimum pH and temperature of the environment of enzymes could denature it.

In these case the enzymes would not work efficiently and the browning of fruits will not take place.

By cooling or boiling the fruit changes the temperature of the enzyme and in this temperature the enzymes do not work effectively.

In case of ascorbic acid the pH is acidic and enzymes do not work at lower pH.

So, by changing the pH and temperature, the enzymes do not work.

You might be interested in
3) What are some examples of alternative energy sources?<br> What are alternative energy sources?
puteri [66]

Answer:

Biofuels, Natural Gas, Wave Energy, etc.

Explanation:

what is it? Alternative energy sources is any energy sources that is alternative to fossil fuels

4 0
3 years ago
Models are important in science. Some models are verbal models, which are full elaborate descriptions that can help someone visu
statuscvo [17]

The main layers of Earths interior are the inner core, the outer core, the mantle and the crust.

<h3>What is the indirect evidence that helped us determine the layers?</h3>

Use of seismic waves is the indirect evidence that helped us determine the layers. When earthquakes occur they produce seismic waves.

The flow of matter occurs by convection. The dense crust subducts back into the mantle exert forces on crustal plates that then move, producing tectonic activity.

So we can conclude that The main layers of Earths interior are the inner core, the outer core, the mantle and the crust.

Learn more about earthquake here: brainly.com/question/248561

#SPJ1

5 0
2 years ago
Please help me and hurry
miskamm [114]

Answer:

5

Explanation:

-5 0 5 10

---------------------------------------------------------

start at 0, move right 3, so ur at 3. then move left 4, so its -1. Then 6 to the right so its 5.

0+3=3-4=-1+6=5

8 0
3 years ago
Which describes the reproduction of plants?
Otrada [13]
Asexual reproduction that produces a zygote
6 0
3 years ago
Which statement describes one feature of chemical changes? They never change a substance’s properties. They change a substance’s
Liono4ka [1.6K]

They change a substance’s identity.

8 0
3 years ago
Other questions:
  • What kind of charge does an atom get after gaining an electron
    10·1 answer
  • Help asap this is a Plato question !!
    6·1 answer
  • I am a human cell with 92 chromosomes. I still have a nuclear membrane. Where am I in the
    15·1 answer
  • The typical state of a neuron is the _____ potential, but when electrical signals stimulate it to its threshold, the _____ is im
    13·1 answer
  • How has the manufacture of medicines been improved biotechnology
    14·1 answer
  • The dew point is reached when___.
    6·1 answer
  • Imagine you do fingerprinting in a forensics lab. you obtain six samples from a crime scene
    9·2 answers
  • Helpp pwzz i need help :DDD
    8·1 answer
  • Elizabeth is a schoolteacher. She is drawing a marine food chain on the board. Which marine organisms should be at the base of t
    15·1 answer
  • What is the function of fibrous connective tissue covering the long bones called?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!