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
babymother [125]
4 years ago
6

Which gene in the lac operon codes for the enzyme that break down lactose?

Biology
1 answer:
Anastaziya [24]4 years ago
5 0

Answer:

Gen lac z: codifies the enzyme β-galactosidase, that hydrolyzes lactose in glucose and galactose.  

The other two structural genes are lacy, which is a permease that helps to transfer lactose into the cell. Finally, lacA is a trans-acetylase.

Also, the operon counts with a promoter, that is the region recognized by the RNA polymerase. An Operator region, that is recognized by the LacI repressor, and the repressor gen lacL.  

You might be interested in
Regardless of size or origin, vernacular regions have what type of character
Lesechka [4]
<span>Vernacular geography is a place of sense in ordinary peoples language. Vernacular region is a distinctive area where the inhabit of themselves and corrected in a history. Major source of this geographical information is submitted by no specialists. From these outcomes the geographical source are arranged by spatial coordinates.</span>
3 0
3 years ago
Messenger RNA carries a(n) ___________ of the DNA’s instructions out of the nucleus to the ___________.
AleksandrR [38]

Answer: The correct option for the fill in the blank is  B) Transcript, ribosome.

mRNA is formed by a template of DNA in the nucleus of eukaryotic cells. The genetic information from DNA is transferred to mRNA in process called Transcription. mRNA is transported outside nucleus and helps in protein synthesis at the site called ribosomes.

mRNA thus carries a transcript of DNA instruction out of the nucleus. It helps in the formation of synthesis at ribososme ( present in the cytoplasm of the cell).

Thus, option B) is the right answer.

8 0
4 years ago
A possible reaction for the degradation of the pesticide DDT to a less harmful compound was simulated in the laboratory. The rea
Bas_tet [7]

Answer:

This exercise is incomplete, missing the value of k (decay constant), which is equal to 4x10⁻⁸s⁻¹ at 25°C

The answer is 0.549 years

Explanation:

Given:

first order of reaction

k = 4x10⁻⁸s⁻¹

For a first order of reaction, the half-life time for the degradation of DDT is equal to:

t=\frac{0.693}{k} =\frac{0.693}{4x10^{-8} } =17325000s=0.549years

8 0
4 years ago
For each molecule of glucose that is processed by glycolysis and the citric acid cycle, what is the total number of nadh fadh2 m
elena-14-01-66 [18.8K]

12 is the total number of NADH FADH2 molecules that will be produced.

In each citric acid cycle, one molecule of FADH2 is formed during the conversion of succinic acid to fumaric.

The CAC is called a cycle because the starting molecule, oxaloacetate is regenerated at the end of the cycle.

It is also known as Krebs cycle. This is actually a part of a huge process called cellular respiration. The citric acid cycle captures the energy stored in the chemical bonds of acetyl CoA (processed glucose) in a step-by-step process, trapping it in the form of high-energy intermediate molecules.

NADH:- It is an energy shuttle that delivers high energy electrons to the electron transport chain where they eventually get to power the production of 2 to 3 ATP molecules.

FADH:- This is another energy shuttle that carries high energy electrons to the electron transport chain, where they will ultimately drive production of 1 to 2 ATP molecules.

To learn more about cellular respiration here

brainly.com/question/14987280

#SPJ4

5 0
2 years ago
Cual es la célula más grande en el humano
Vsevolod [243]

Answer:

El óvulo (o gameto femenino) es la célula más grande del organismo humano, que fecundada por un espermatozoide dará lugar a un embrión.

Explanation:

8 0
3 years ago
Other questions:
  • A parent with type AB blood could not produce a child with type
    8·1 answer
  • How does meiosis contribute to genetic variation
    15·1 answer
  • If the potato cells decreased in mass what was lost from the cells:
    13·1 answer
  • How are atoms in molecules being rearranged into different molecules
    15·1 answer
  • Giraffes have long necks that allow them to eat leaves in trees. What characteristic of life is this most directly an example of
    13·2 answers
  • Mucosae of a healthy intestinal tract _____. (Select all that apply.)
    6·1 answer
  • Which metabolic pathway is correctly paired with an example?
    13·2 answers
  • A oceanic to continental convergence boundary would produce what type of volcano?
    6·1 answer
  • Even though scorpions are related to spiders, there are many differences between the two organisms. One difference is that scorp
    10·1 answer
  • Describe the joint-associated problems that can occur as normal changes to the articular cartilage as an individual ages.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!