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
Afina-wow [57]
3 years ago
15

Describe how the lac operon functions, and explain how it permits E.coli to produce the enzymes needed to breakdown lactose when

it is present in the bacterium
Biology
1 answer:
Charra [1.4K]3 years ago
3 0

Explanation:

            Basically, lac operon is an enzyme, and enzymes work in a very well known way called lock key system . This lock key system works pretty simply, imagine the lock as the enzyme, and this lock needs a specific key to open it, thinking about an enzyme, it needs the specific substrate to breakdown the lactose, this enzyme is called lactase, and it's present in some animals and bacterium too. This doesn't only work for lactose, it's the same lock system for every enzyme, all of them need specific substrate to break it down into things that the body can use for many things.

You might be interested in
How many degrees north or south would you traverse if you went from the equator
fredd [130]

Answer:

14°

Explanation:

in north and south poles it is cold and sunlight does not reach fully

7 0
1 year ago
What rule of magnetism is illustrated by the lines of the iron filings with unlike poles?
Debora [2.8K]

Answer:

The rule of magnetism illustrated is the field lines are more concentrated at the poles and also about the direction of magnetic field.

Explanation:

  • Every magnet has two pole, north pole and south pole. The like poles repel each other and unlike poles attract each other.
  • The direction of magnetic field is from north to south that can be seen by the iron filling experiment.
  • When the iron fillings are kept near the bar magnet, we observe that most of the fillings are attached to either poles.
  • It is due to the fact that the concentration of magnetic field is highest at the poles.
6 0
3 years ago
The main function fo the placenta is to
Mariana [72]

Answer:

The organ that supplies oxygen and nutrients to the growing baby

Explanation:

7 0
4 years ago
Contains only one double bond between carbons.
zlopas [31]

Correct option b) A saturated fatty acid

When only one double bond in the molecules that is also known as monounsaturated fat. If there is more than one double bond that is known as polyunsaturated fat.

Unsaturated fatty acids have one or more than one carbon- carbon band  double bonds. That indicates the maximum possible numbers of hydrogen atoms are bonds to each carbon in the molecule. These carbon  form double bonds with the carbons next to them.

Alkenes contain carbon- carbon double bonds and unsaturated hydrocarbons with the molecular formula is Cn H2n. This is made of chains where some carbon atoms are not fully saturated with hydrogen atoms.

To learn more about polyunsaturated fat here

brainly.com/question/13141983

#SPJ4

7 0
1 year ago
HELPPPPPP QUICK please!
denpristay [2]

HI~ I hope this helps

(these answers were hand-written meaning I did not copy and paste so, feel free to use the answers freely)

1.

When ecosystems change rapidly the fundamental environmental cycles such as the circulation of water, carbon and nutrients can change as ecosystems depend on them. The usage of factors such as freshwater, carbon dioxide emissions and fertilizer provides a large benefit to humas therefore meaning, that large and rapid changes to an ecosystem could also effect the things we as humans rely on.

2.  

Complex organic matter is broken down by decomposers into carbon dioxide, water etc. The ecosystem is affected based upon the fact that the decomposition of organic matter that is produced by plants, animals and soil organisms is an important process which affects the different important ecosystem processes like nutrient cycling and carbon sequestration.

3. (could have two answers- I recommend the second)

Adaptation- due to the mutation process which results in changes in the structure and function of organisms, these ecosystems would be different as well as unique. The organisms which possesses the traits needed to adapt could then survive as its unique characteristics due to mutation would provide a strong ability

Rise in temperature- If the temperature located on earth was to rise, organisms would have a higher living rate as bacterial life flourishes in warmer temperatures and dies out in colder ones.

4.

~The rapid change of increased food production provides better life sustainability to those living in the ecosystem.

~The rapid change in a large increasing number of organisms could be helpful as they often live of off one another.

5.

~Rapid growth of things such as phytoplankton which cause dead zones are harmful to the ecosystem. Dead zones create zones where too much oxygen is consumed resulting in areas where plants and sea life can no longer survive.

~Whereas the rapid increase of organisms could also be harmful to an ecosystem as the possibility of the organism outnumbering the food sources could become prominent.

8 0
3 years ago
Other questions:
  • What is a example of allele
    13·1 answer
  • Which is the mRNA made during transcription of the following DNA template?
    12·2 answers
  • What tool can be used to measure the mass of a package being mailed?
    9·1 answer
  • Suppose chromosomes in a skin cell are damaged by ultraviolet radiation. if the damaged genes do not effect cell cycle regulatio
    12·2 answers
  • What kind of biomolecule can store more energy than others?
    14·1 answer
  • Which factor in the Southwestern desert ecosystem is abiotic?
    14·1 answer
  • Morgan breeds and sells snakes. He knows that he can make the most money by breeding and selling albino snakes. Albinism is a re
    10·1 answer
  • 1. Which of these best identifies biotic factors in a forest environment?
    13·1 answer
  • What level of organization is formed when many cells come together ?
    14·2 answers
  • Select all the job(s) of the membrane:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!