Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If she moves the operator to the far end of the operon, past the transacetylase (lacA)gene, which of the following would likely occur when glucose levels are low?

A. The inducer will no longer bind to the repressor.

B. The lac operon genes will be transcribed continuously.

C. The repressor protein will no longer be produced.

D. The operon will never be transcribed.

E. The repressor will no longer bind to the operator.

Answers

Answer 1

Answer:

Option B

Explanation:

The lac operon genes will be transcribed continuously.

In as much as the pathway's substrate is still available and present for this operon, there would be continuously transcription of the genes. Due to yellow level of glucose, more cAMP accomplish and then RNA polymerase binds to the lac promoter effectively only when the CAP-cAMP complex is also bound.

The activity of the repressor is not present here as placing the operator to this position does not disturb its transcription.


Related Questions

How do catalyst work?

Answers

Answer:

Catalysts increase the reaction rate of a chemical reaction, allowing it to use less energy to start a chemical reaction and doesn't change the chemical properties or formulas.

Explanation:

You are now taking a ride on the Magic School Bus with Ms. Frizzle. This bus is magic because it can go anywhere within the body. Today’s lesson is on Central Dogma. Ms. Frizzle takes your class directly to the nucleus to start your field trip. Since this trip is about the central dogma, what three major cellular process will be involved? Where will you bus be going within the cell during each of these processes? For each process, describe in your own words and in general what is going on?

Answers

Answer:

See the answer below

Explanation:

The trip will involve a bit of stoppage inside the nucleus during which replication and transcription will take place before proceeding to the cytoplasm where synthesized mRNA will become translated into protein.

The central dogma refers to a series of processes during which genetic information in the DNA of a cell is encoded and expressed in living cells. The 3 major steps involved in these processes are:

1. Replication

2. Transcription

3. Translation

Replication involves the synthesis of a double-stranded DNA molecule from a template of another double-stranded DNA molecule within the nucleus. In order words, replication is a process during which a DNA molecule reproduces itself. Each of the strands of the DNA acts as a template for the synthesis of another new strand. Eventually, 2 new double-strand DNA molecules are formed each consisting of one old strand and one new strand.

During transcription, the information contained in deoxyribonucleic acids is encoded and transcribed into another molecule known as the messenger ribonucleic acid. This process happens in the nucleus of the cell.

After transcription and processing of the mRNA produced, the resulting mRNA is then transported to the cytoplasm where, together with the ribosome and transfer RNA, the encoded information becomes translated into protein. Each of the genetic codes in the mRNA is translated to their respective amino acids and the amino acids are linked together by peptide bonds to form a protein.

the procces of filtration occures at the

Answers

Answer:

The process of filtration (or filtrate formation) occurs at the filtration membrane.

Explanation:

The filtration membrane is located at the boundary between the glomerulus and Bowman's capsule.

:)

What is the primary cause of weather due to?

Answers

Answer:Temperature Wind Pressure Moisture. Sun.

Explanation:

Answer:

What is the primary cause of weather due to?

The answer is The state of the atmosphere.

Explanation:

I hope this helps :)

Why is the "dorsal-ventral" axis not synonymous with the "posterior-anterior" axis in the whole human nervous system?

Answers

Answer:

The ventral side is towards the belly side

The Dorsal side is back to the belly side

Anterior is Before the belly side

Posterior is after or coming after to the belly side.

Explanation:

The ventral side is associated with the animal or a person belly side which related to the organism digestion and respiratory organs.

The anterior is the before or in front of side position which is associated with the front line of an organism.

The posterior side is related to the after side or it is opposite to the anterior position of an organism.

It is depend on the organism position, that these sides are related to each other in some instances. In some cases these are orthogonal in some times.

what are the 4 phases of mitosos

Answers

Answer:

prophase, metaphase, anaphase, and telophase.

Explanation:

which animal look very different when it is grown up from when it was young

Answers

Answer:

Explanation:

Animal which looks very different when it is grown up from when it was young is a tadpole.

Hope this picture is clear and easy to understand

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If the herbivore population in an ecosystem increased, what would most likely happen to the size of the carnivore population? It would decrease. It would increase. It would die off. It would remain the same.

Answers

Answer:

I think the Carnivore population would increase

Explanation:

There would be more prey for the Carnivores. Leading to more food, which leads to more mating.

Answer:

well increase because if we look at the food chain or according to it the carnivore would get more food more food leads to mating

hope it helps

imagine you are a detective examining a crime scene you are trying to identify the person who committed the crime so you collect many samples at the crime scene which sample would be most useful in identifly the person who commited the crime A. a book found on the ground at the crime scene B. a pair of shoes found at the crime scene C. an uneaten burger and fries left at the crime scene D. a piece of fingernail found at the crime scene

Answers

D. A piece of fingernail found at the crime scene

Answer:

The answer would be D

Explanation:

Only logical answer here


Protein is needed for growth and repair.
The digestion of protein begins in the stomach and is completed in the small intestine,
What are the products of the digestion of protein.
Tick the correct box
amino acids
energy
sugars
vitamins
1 mark
Amino acids
O Energy
O Sugars
Vitamins​

Answers

Answer:

Amino acids

Explanation:

Hope it helps.

what is cellular affinity in biology?

Answers

Answer:

affinity. Attraction between particles. Biology: A measure of the attraction of one biological molecule toward another molecule, either to modify it, destroy it, or form a compound with it. Examples are enzymes and their substrates, or antibodies and their antigens.

Air pollution in national park is effecting the environment in which way

Answers

Answer:

Nature

Explanation:

Air pollution harms plants and animals and even contaminates water – it stifles tree and crop growth, causing leaves of tree species to blacken and wither.

Besides the HCT, what other component of blood could be measured to give a better understanding of oxygen-carrying capacity? Explain your answer.

Answers

Answer:

The haemoglobin levels or counts can be used.

Explanation:

The oxygen carrying pigment of the blood is the heamoglobin (Hb).it is a protein molecule with for heam groups,Each of the latter can bind with  4 molecules of oxygen in a cooperate bonding.The more oxygen molecules binding by Hb,the more oxygen is carry in RBC.

Therefore if the number of Hb counts is reduced in an individual the volume of oxygen in the RBC of the subject should  reduced,Therefore, this should be a good indicator of the lower oxygen capacity of the blood of the individual.

Basically in a physiological female the Hb count/100ml of blood is 12-16g/ml,like wise 13-18g/100mI in a physiological  man.

Therefore fluctuations in the levels of these values below the set points  is an indicator of distortion in the oxygen carrying capacity of the blood.

The  amount of the blood in volume that contains RBC is called Hematocrit. Therefore for accuracy the HCT together with the Hb counts are good indicators of oxygen capacity of the blood.

Hematocrit refers to the volume percentage of the red blood cells in the blood. Oxygen-carrying capacity can be measured by several techniques.

The co-oximetry and Arterial Blood Gas can be used to determine the oxygen-carrying capacity.

The techniques can be explained as:

Co-oximetry is a type of blood test used to measure the oxygen-carrying capacity of the hemoglobin in the blood. The test uses the light of different wavelengths that can pass through the blood to determine oxygen capacity.

Arterial blood gas or ABG test is a type of blood test used to measure the pH and oxygen-carrying capacity of the blood present in the artery. It is used to determine the efficiency of the lungs to exchange the gas oxygen and carbon dioxide from the blood.

Thus, the co-oximetry and ABG test can be used to determine oxygen levels in the blood.

To know more about blood tests, refer to the following link:

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The functions of the oral cavity include all of the following, except:_________a. mechanical processing of food. b. digestion of carbohydrates. c. analysis of material before swallowing. d. lubrication. e. absorption of monosaccharides.

Answers

Answer:

e. absorption of monosaccharides

Explanation:

The oral cavity is the first part of the digestive system where food is received, crushed, mixed with digestive enzymes secreted at that level, and also where the food is turned into the form of bolus before it is being channeled down through the pharynx into the alimentary canal for further digestion.

The oral cavity is also a site for respiration and speech production.

It is made up of the teeth, hard and soft palate, tongue and other vital parts that play different roles in food digestion.

The function of the oral cavity does not include absorption monosaccharides.

What is the ecological relationship between the monk seal and the octopus/eel/triggerfish?

Answers

Answer:

The monk seal and the octopus/eel/triggerfish also live in close proximity to each other and have an ecological relationship between them. The monk seals are the predators to octopus/eel/triggerfish in the ocean.

The monk seal preys on octopus/eel/triggerfish in the ocean for their survival and competes with sharks and other marine animals for food.

Hence, the monk seal and the octopus/eel/triggerfish have ecological relationship of the predation in which one animal feed on another.

The ecological relationship between the monk seal and the octopus/eel/triggerfish - predator and prey.

The monk seals are seals with no ear and are found in the tropic climate.

These are the organisms that are live in close proximity to the octopus/eel/triggerfish.The seals are the predators to eels, triggerfish and octopuses at the bottoms of the ocean floor.Sharks are present in the same habitat and feed on the same organisms so they are in competition.

Thus, the ecological relationship between the monk seal and the octopus/eel/triggerfish - predator and prey.

Learn more:

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What is the current classification of bacteria formerly termed members of the Bethesda-Ballerup group? g

Answers

Answer:

Explanation:

This group is made up bacteria that utilizes of citrate and are slow lactose-fermenting. They belong to the family Enterobacteriaceae which share some particular feature with the lactose-fermenting citrobacters.

Thus, they have now been included in the genus Citrobacter with no regards to how fast or slower their lactose fermentation is.

Triangle KLM was dilated according to the ruleDO,0.75 (x,y).

Answers

The answer is

A. DO, 0.75 (x,y) = (0.75x, 0.75y)

B. LM is parallel to L'M'.

and C. The vertices of the image are closer to the origin than those of the pre-image.

Answer:

the correct options are A, B, and D

Explanation:

when a vegtalble is place in very salty water it becomes shriviled up why does this happen

Answers

No it is because of osmosis (diffusion in water) it does the same with gummy bears

Que son las células procariotas?

Answers

Answer:

En biología, con el término procariotas se hace referencia a las células que no tienen un núcleo formado, en contraste con las células que han formado un núcleo, las células eucariotas.

Estas células tienen una estructura más simple que las células eucariotas y son de menor tamaño.  Externamente, las células procariotas están separadas del medio ambiente por la membrana celular, pero internamente no tienen ninguna otra formación. En su mayor parte, los organismos procariotas son unicelulares y pertenecen al grupo de bacterias.

What allows enormous lengths of DNA to
be folded inside the nucleus and prevents
chromatin from becoming tangled
during mitosis?
A. chromosome
B. ribosome
C. centrioles
D. nucleosome

Answers

The answer is D a nucleosome; a nucleosome has DNA wrapped around histones which prevents chromatin from tangling :)

Answer:

D

Explanation:

A particular protein (Vac8) found in yeast has this N-terminal sequence, Met-Gly-Ser-Ser-Cys.... The corresponding DNA sequence in the coding strand is 5' ATG GGC TCA TCG TGC.... If the DNA sequence is mutated to 5' CTG GGC TCA TCG TGC..., what will happen to this VAC8 gene? (in RNA, CUG codes for Leu)

Answers

Answer:

The protein will not be synthesized because this point mutation produces the loss of the start codon (substitution of Met by Leu).

Explanation:

The mutations are changes in the DNA sequence that have diverse effects on protein synthesis. A mutation in the start AUG codon may lead to the reduction and even the elimination of protein synthesis. In consequence, this type of point mutation is usually referred to as 'start-loss mutation'.

What is a substrate? a molecule that acts as a catalyst a place where the reaction occurs a place on the product where the enzyme fits a reactant that is catalyzed by an enzyme

Answers

Answer:

a reactant that is catalyzed by an enzyme

Explanation:

Reactants are often referrred to as substrates as those are what enzymes mostly act upon to create products or some desired consequence

Option (d). a reactant that is catalyzed by an enzyme is called the substrate.

Substrate

A substrate exists as a molecule on which an enzyme acts. Enzymes catalyze chemical reactions that concern substrate, where the substrate binds to the enzyme's active site, and an enzyme-substrate complex is created. By action of the enzyme, the substrate exists transformed into a product, released from the active site, and free to obtain another substrate.

Enzyme catalysis exists as the increase in the rate of a process by a biological molecule, an "enzyme". Most enzymes exist in proteins, and most such processes are chemical reactions. Within the enzyme, naturally, catalysis happens at a localized site, called the active site.

The reactant in an enzyme-catalyzed reaction is named a substrate.

Because enzymes can expand reaction rates by enormous factors (up to 1017 times the uncatalyzed rate) and tend to be very precise, typically producing only a single product in quantitative yield, they exist the focus of active research.

Hence, Option (d). a reactant that is catalyzed by an enzyme is called the substrate.

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The protein thorain is encoded by the gene thrL, and thorain is a negative regulator of the thrMN operon. Assume there is no other regulation taking place. Predict the phenotype of a thrL- mutant that encodes a nonfunctional thrL protein.

a. The thrM and thrN genes would be transcribed at higher levels compared to non-mutant.
b. The thrM and thrN genes would be transcribed all lower levels compared to non-mutant.
c. The thrM and thrN genes would not be transcribed

Answers

Answer:

The correct answer is option a, that is, the thrM and thrN would be transcribed at high levels in comparison to non-mutant.

Explanation:

Based on the given information, in the existence of thorain the expression of thrM and thrN will be prevented as thorain functions as a negative regulator. In case, if the gene, which codes for thorain, that is, thrL gets mutated, the coding for the functional thorain would get prevented.  

With the encoding of the non-functional thrL protein, there would be an enhancement in the expression of thrN and thrM genes and it will get transcribed at higher levels in comparison to the non-mutant or the wild-type.  

To what kingdom do coccidia belong? Monera, Animalia, Protista, Protozoan

Answers

Answer:

Protozoan

hope this help you



Which is an example of how the cell membrane of a tube worm maintains a
stable environment?
O A. It communicates with other cell membranes.
OB. It prevents salt from flowing in.
O c. It allows the temperature to change quickly.
OD. It allows large molecules to enter.​

Answers

Answer:

It prevents salt from flowing in.

Explanation:

so the tubeworm's cell membrane prevents minerals from flowing in and salt is a mineral so it won't allow salt to flow in.

Answer:

it prevents minerals in the water from flowing into the cell

Explanation:

APEX

What can carbon atoms do that makes them different from atoms of the five
other common elements of life?
A. Form compounds with nitrogen and phosphorus
B. Form compounds with hydrogen and oxygen
C. Form polyatomic ions
D. Form four covalent bonds

Answers

Answer:

B. is the answer

Explanation:

form compounds with hydrogen and oxygen .

Answer:

Form four covalent bonds

Explanation:

Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen.

Where does the electron-acceptor molecule
transfer electrons?
photosystem 1
photosystem II
the thylakoid space
the electron transport system

Answers

Answer:

The answer is photosystem 1

Explanation:

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Answer: A.) photosystem I

Explanation: i hope this helps :)

Exchange of respiratory gases takes place in an earthworm through (A) moist skin (B) gills (C) trachea (D) lungs

Answers

The lungs is the answer

Explanation

Earthworms do not have specialized respiratory organs like we do; instead, they take in oxygen and expel carbon dioxide directly through their skin. Oxygen diffuses through the earthworm's body surface and diffuses inward to the network of capillaries lying just under the body surface.

Answer:

I believe skin is the answer on edg.

Explanation:

Compare the potential energy stored in lipids,proteins, and carbohydrates. In which order does the body look for these molecules as a source of energy.​

Answers

Answer:

carbohydrate,lipids then protein

Select all that apply.
A food chain or food web can provide good information including
the flow of energy in an ecosystem
the eating patterns of organisms
thing
the types of food that are best for you to eat
how much energy is transferred from one organism to another
MOTORICTION
DCAN NEYT SECTION
ACV AD UUD

Answers

Answer:

the eating patterns of organisms thing

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