when the lac repressor protein binds to lactose, why does it fall off its binding site at the operator?

Answers

Answer 1

Answer:

English is not my native language so sry if there's any grammaticaly mistake

Explanation:

cuz it changes its shape and forme u got that?!

Answer 2

Lactose falls off its binding site at the operator because the allolactose binds to the repressor causing it to fall off the operator side.

What do you mean by Lac repressor?

Lac repressor prevents the transcription of genes involved in lactose utilization in E. coli, such as lac genes.

When lactose becomes available a small amount of it is taken up by lactose permease and converted to allolactose by the enzyme beta-galactosidase.

Therefore, Lactose falls off its binding site at the operator because the allolactose binds to the repressor causing it to fall off the operator side.

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Related Questions

which joint is considered the most flexible joint in the body?

Answers

Answer:

The shoulder.

Explanation:

The shoulder is the most flexible joint in the body, making it the most susceptible to instability and injury. This mobility provides the upper extremity with tremendous range of motion. The shoulder join is also known as a 'ball-and-socket' joint.

What explains a child's growth over time?

New atoms and molecules are added to the body through cellular respiration.

New cells with identical DNA are created through cell division.

Answers

Answer:

New cells with identical DNA are created through cell division.

Explanation:

what are processes of the water cycle that return water to the atmosphere

Answers

Answer:

Evaporation and transpiration change liquid water into vapor, which ascends into the atmosphere due to rising air currents.

What type of shock occurs when bacterial toxins trigger vasodilation and increase capillary permeability

Answers

Septic shock occurs when bacterial toxins trigger vasodilation and increase capillary permeability.

Vasodilation occurs during inflammatory processes thereby leading to an increase in blood flow. Septic shock cause the release of numerous vasodilatory chemicals thereby leading to lethal hypotension.

Septic shock is caused by changes in hemodynamic profile as a result of endothelial dysfunction with increased capillary permeability thereby leading to hypotension.

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define active transport in your own words

Answers

Answer: Define Active transport

Explanation: The moving of molecules or ions across the cell membrane.

Hope this helps!

Explain how pollution from one location
can affect the environment far away from the
source of the pollution

Answers

Answer:

Air quality is affected by natural processes. Wind can move pollutants from their source to far-away locations. It can still spread and harm living creatures and destroy their environments.

Explanation:

Air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

What is Pollution?

Pollution is defined as the introduction of harmful materials into the environment where the harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash which can also be created by human activity, such as waste or runoff produced by factories. Pollutants harm the quality of air, water and land.

Many things produce pollution such as cars spewing pollutants from their exhaust pipes. Burning coal to generate electricity pollutes the air. Industries and homes generate waste and sewage that can pollute land and water. Pesticides which is chemical poisons used to kill weeds and insects which is seep into waterways and harm wildlife.

Thus, air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

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at what point in sperm production do you hypothesize that loss of the testis-blood barrier would have an immunological effect on sperm production?

Answers

Answer:

when u do ittttt

Explanation:

Describe the relationship between the atmosphere and the geosphere regarding the movement of carbon.

Answers

Answer:

Several processes move carbon from the geosphere to the atmosphere. Volcanic eruptions release carbon dioxide from molten rock beneath the earth's surface. The production of cement that's used for homes, skyscrapers, streets and other hardscapes around the world releases an enormous amount of carbon dioxide.

Explanation:

which is not involved with an inflammatory Response
A. Fever - increased temperature
B. Slowed blood flow
C. White blood cells move to the area of infected
D. inflammation in area

Answers

Slowed blood flow is not an inflammatory response.
Reasoning: a fever is caused by the body trying to kill off any unwanted pathogens with the heat. This is an inflammatory response to the body being infected.
White blood cells move to the infected area in an attempt to kill any pathogens. Since white blood cells are mainly meant to help kill pathogens, it is an inflammatory response to send white blood cells to kill the pathogen.
Lastly, inflammation is caused by the body trying to rid the infected area of the pathogens. Similar to the name “inflammatory”, the body will often cause inflammation in an attempt to get rid of any unwanted pathogens in the body.

This is an inflammatory reaction to an infection in the body. Option D is correct.

What is the inflammatory response?

When tissues are harmed by toxins, germs, trauma, heat, or any other cause, the inflammatory response (inflammation) ensues. A fever is induced by the body's attempt to destroy any infections with heat.

Histamine, bradykinin, and prostaglandins are among the substances released by injured cells. Because of these substances, blood vessels leak fluid into the tissues, producing swelling.

White blood cells migrate to the affected location to destroy any germs. Because white blood cells are primarily intended to aid in the killing of infections, sending white blood cells to destroy the pathogen is an inflammatory reaction.

Finally, inflammation results from the body's attempt to cleanse the contaminated region of microorganisms. Similar to the label “inflammatory,” the body will frequently create inflammation in an attempt to cleanse the body of any undesirable infections.

Therefore, option D is correct.

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1. Transcription happens in the _______ and translation happens at the _________.
a. mitochondria, chloroplasts
b. chloroplasts, mitochondria
c. nucleus, ribosome
d. ribosome, nucleus

2. Proteins are long chains of _________ assembled by _____ bringing them to the ribosomes.
a. nucleotides, mRNA
b. mRNA, nucleotides
c. amino acids, tRNA
d. tRNA, amino acids

3. What are three amino bases on the mRNA strand that codes for a specific amino acid is? What is the complementary bases on a tRNA molecule called?
a. Genetic code, DNA
b. DNA, RNA
c. Codon, anticodon
d. bird, dog

Answers

Answer:

1. C

2. C

3. C

Explanation:

Hope this helps.

the words ""antigen"" and ""virus"" are interchangeable.

Answers

Answer:

False

Explanation:

A virus (which is a pathogen) has a lot of antigens on its surface, so they can't be used interchangeably.

What percentage of the earth’s land and what percentage of the earth’s oceans have been disturbed by human activities?

Answers

Answer:

the first 1 :)

Explanation:

Why would you use sodium hydrogen carbonate in an investigation

Answers

Answer:

Investigating photosynthesis. The effect of light intensity on photosynthesis can be investigated in water plants. ... Sodium hydrogen carbonate - formula NaHCO 3 - is added to the water to supply carbon dioxide - a reactant in photosynthesis - to the plant.

Explanation:

hope this helps

A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?

Answers

Answer:

50 percent

Explanation:

O is a recessive trait. The father has a B and an O, using a punnet square you are able to determine that the possible outcomes are BO, BO, OO, and OO

rele existente entre o modo verta do como Loonie na propaganda o trecho que revela a tras de cor Por que algumas partes do dos foram grafadas com as palavra do circunstancia OS orgbos tonponsáveis pela publicação anuncio publicat 10 Qual o tipo discursivo predominante do texto?​

Answers

Answer:

what??speak English please

Explanation:

i don't really understand

I'm sorry I'm really sorry plss

forgive me

Plz help! 15 points

• Would a plant be able to survive if the ground tissue was damaged?

Answers

Answer:  I don’t think so because it needs the carbohydrates produced by the plant.

Explanation: No because the soil would be contaminating the soil until it reaches a point where the soil begins to tear and cracks will open in the soil and the air will be polluted, it would be an uninhabitable planet

Which of the following can be used to assess the biological diversity of an area?.

Answers

Answer:

genetic variation within each species and number of species present

Explanation:

A mordant that is applied after the primary stain to bond chemically the alkaline dye to the bacterial cell wall is

Answers

Answer:

A mordant that is applied after the primary stain to chemically bond the alkaline dye to the bacterial cell wall is: safranin.

Explanation:

Helpppoo please no filessss

Answers

Answer:

i can’t see the answer choices

Explanation:

What is generally the site of cellular respiration?

Answers

The site of cellular respiration is generally the mitochondria.

The following list of events happens during meiosis:

Prophase I: Crossing over between homologous chromosomes occurs.
Metaphase I: Tetrads line up at the metaphase plate.
Anaphase I: Tetrads are separated.
Telophase I: Nuclear envelopes reform around the separated chromosomes.
Prophase II: Chromosomes condense.
Metaphase II: Chromosomes line up at metaphase plate.
Anaphase II: Sister chromatids separate into daughter chromosomes.
Telophase II: Nuclear envelopes reform around the daughter chromosomes.
Identify the answer choice that correctly lists the events from above that lead to new genetic combinations in the gametes.

(1 point)

1 and 2

1, 2, and 5

5 and 6

5, 6, and 7

Answers

Meiosis is a form of cell division that occurs in the sex chromosomes. This form of division ensures genetic diversity and also allow for the chromosome set to be halved.

The events from above that lead to new genetic combinations in the gametes include:

Prophase I: Crossing over between homologous chromosomes occurs.

Metaphase I: Tetrads line up at the metaphase plate

(1 and 2) option a.

During meiosis, possibilities of new genetic combinations occurs which allows for variations to exist between the offspring and parents. These ensures that offspring are not entirely identical to the parents and also allow for survival and other benefits.

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5 A prokaryotic cell is 5.0 um in length. A virus particle is 300 nm in length. How many times larger is the prokaryotic cell compared to the virus particle?
A 2
B 17
C 60
D 167​

Answers

The prokaryotic cell is 17 times larger as compared to the virus particle.

Both values first need to be converted to the same unit.

5.0 um = 5.0 x [tex]10^-^6[/tex] m

300 nm = 3.0 x [tex]10^-^7[/tex] m

Dividing both values:

   5.0 x [tex]10^-^6[/tex] m/3.0 x [tex]10^-^7[/tex] m

                        = 16.667

Hence, the prokaryotic cell is approximately 17 times bigger than the virus particle.

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What is the grouping of organisms by their energy source

Answers

Cell-tissue-organ-organ system-organism

when two haploid gametes unite, they create a diploid cell called a

Answers

2 haploid gametes combine to produce a diploid zygote

What are villi?



don't spam​

Answers

Answer:

Villi are finger-like outgrowths on the inner walls of the small intestine. The villi increase the surface area for absorption of the digested food.

Answer:

Villi are tiny finger-like projections seen in the small intestine. They are more than millions of villi in the small intestine performing the following functions: The villi absorb nutrients from the food and cause their conversion into glucose.

low does natural selection lead to the evolution of a population?

Answers

Explanation:

when natural selection is cartried out it leads to the species being the fittest inorder words it is called survival of the fittest inorder to promote evolution

Toll-like receptors are eukaryotic membrane proteins that bind with bacterial surface molecules and: ____________

a. cause the cell to phagocytize the bacteria.
b. activate the complement cascade.
c. cause the release of antibiotics to kill the bacteria.
d. form channels through which bacterial proteins can enter the eukaryotic cell.
e. cause the release of cytokines that trigger host defenses against the bacteria.

Answers

Answer:

release cytokines that trigger host defenses against the bacteria

Explanation:

The basic pattern of blood flow from the lungs to the rest of the body is:
pulmonary vein; left ventricle; left atrium; vena cava.
O pulmonary artery; left atrium; left ventricle; aorta.
O vena cava; aorta; right ventricle; right atrium.
O pulmonary vein; left atrium; left ventricle; aorta.

Answers

Answer: pulmonary vein; left atrium; left ventricle; aorta

Explanation: I just did this question in the final exam of A&P and it was correct, hope this helps:)

The basic pattern of blood flow from the lungs to the rest of the body is: pulmonary vein; left atrium; left ventricle; aorta. The option (B) is correct.

What are pulmonary vessels?

Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. Your pulmonary veins are part of your body's pulmonary circuit. This is a system of blood vessels that moves blood between your heart and your lungs. This circuit also includes your pulmonary arteries.

For the exchange of gases to occur effectively, the lungs require a dual vascular supply known as pulmonary and systemic circulations. The pulmonary circulation is responsible for bringing deoxygenated blood from the body to the lungs for gaseous exchange and then returning oxygenated blood to the heart.

There are 4 total pulmonary veins—with 2 pulmonary veins coming from each lung, left and right—that empty into the left atrium of the heart.

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Which unit should be used when measuring the height of an adult?

Answers

Answer:

Feet and inches, or centimeters unit should be used when measuring the height of an adult

Explanation:

in turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, what is the probability of an individual offspring having yellow feather?


50%
0
25%
100%

Answers

Answer:

50%

Explanation:

trust me because the heterozygous is so weird but I know this.

In turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, than the probability of an individual offspring having yellow feather is 50%. Thus, option A is correct.

What will be produced in turkeys a dominant gene?

In turkeys a dominant gene, R, produces the familiar bronze color; its recessive allele, r, results in red. Another dominant gene, H, results in normal feathers; its recessive allele, h, produces feathers without webbing, so that they resemble tufts of hairs.

Two bronze turkeys with normal feathers were mated, and their offspring consisted of eight bronze with normal feathers, three bronze with hairy feathers, two red with normal feathers, and one red with hairy feathers.

Since, this offspring received a recessive red, r, allele from each parent and a recessive hairy, h, allele from each parent, both parents must heterozygous for both characters: RrHh.

Therefore, In turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, than the probability of an individual offspring having yellow feather is 50%. Thus, option A is correct.

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