A transcriptional repressor that controls the transcription of gene A is not normally active unless bound by an effector molecule X. In a certain cell, the domain of the repressor that binds to the silencer of gene A is mutated so that the repressor-X complex can no longer bind to its recognition site. With all other factors being the same, what effect do you predict on the transcription of gene A if X is increased in the cell and the cell is already expressing gene A

Answers

Answer 1

Answer:

Transcription of gene A is not affected

Explanation:

A transcriptional repressor is a DNA/RNA-binding protein that acts to suppress gene expression and/or protein synthesis by binding to target sequences. Moreover, a silencer is a DNA region that binds to particular transcriptional repressors in order to suppress gene expression. In this case, the transcriptional repressor is activated by binding to an effector molecule X (e.g., another protein). In consequence, and since the activated repressor-X complex is not more able to bind the silencer of gene A, it is expected that such complex will not be able to affect transcription of the target gene.


Related Questions

Can someone help me with the order of the carbon cycle ?

Answers

Answer:

First what is it? Carbon cycle is, nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.

1.Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.

2.Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.

3.Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.

4.Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration.

5.Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. Most of the remainder becomes dissolved in seawater.

6.Carbon moves from the atmosphere to the oceans. The oceans, and other bodies of water, absorb some carbon from the atmosphere. The carbon is dissolved into the water.

Explanation: This should help

1
Which of the following types of pollution can cause eutrophication in a body of water?

residential
construction
agriculture or all of the above

Answers

I would say residential possibly

Which statement correctly identifies one advantage and one disadvantage of relying on trains for
transportation?
Your answer:
Trains are inexpensive to build, but require too much open land.
O Trains are convenient and comfortable, but have a limited range.
Trains can damage habitats from pollution, but can be easily rerouted.
Trains can reduce congestion, but typically increase overall fossil fuel use.
Trains can have inconvenient schedules, but produce less pollution than cars do.

Answers

Answer:

The correct answer is - Trains can have inconvenient schedules, but produce less pollution than cars do.

Explanation:

Trains are expensive to build and also required land for making routes and stations and platforms for passengers but that can be reimbursed by fare in a longer time period.

Trains also produce pollution but in comparison to cars these are way less contribute to the pollution, However, these are not convenient as they start and reach at a specific time and also sometimes not comfortable like cars.

The property of water in which water resists in changing it's temperature is called


capillary action


surface tension


universal solvent


high specific heat

Answers

Answer: high specific heat. Brainliest??

Explanation:

what is the scientific name of frog and man?​

Answers

Answer:

Explanation:

The Latin name for the organism, which is made up of two words.

The genus name comes first and must be written in capital letters, followed by the specific name.

Carl Linnaeus (tenth edition of Systema Naturae, 1758), the founder of binomial nomenclature, is the source of today's scientific names.

Currently, international regulations govern scientific nomenclature is (International Code of Scientific Nomenclature).

The scientific name for Frog can be written as:

Rana  temporaria

The scientific name for Man is:

Homo  sapiens

what does the term conversion nation mean in regards to energy​

Answers

Answer:

https://search.yahoo.com/search?fr=mcafee&type=E210US91088G91495&p=brainly.com

Explanation:

I NEED HELP! PLEASE ASAP

Answers

Answer:glucose

Explanation:

Answer is :Glucose hope this helped

write out the pathway that a drop of blood takes, starting in the right ventricle. As you describe the path, include the names of the blood vessels and the valves, and indicate if the blood is oxygenated or deoxygenated g

Answers

Answer:

The correct answer is - Right atrium, right ventricle, pulmonary arteries, lungs, pulmonary veins, left atrium, left ventricle, aorta, arteries, arterioles, capillaries, venules, veins, vena cavae

Explanation:

Throughout the vascular system or cardiovascular system, the drop of deoxygenated blood moves through right atrium and right ventricle to the lungs within the pulmonary arteries. Then the oxygenated blood transfers via pulmonary veins t the left atrium of the heart that pumps the oxygenated to the rest of the body by the left ventricle through the aorta.

Arteries help in the flow of the systemic circulation then blood moves from arterioles to capillaries. The deoxygenated blood is returned through the veins to the heart that come to the superior and inferior vena cava and back to right atrium and cirlculation repeat again.

Within which structure in the human body does
specialization of parts of the developing baby take
place?
A) ovary
B) uterus
D) pancreas
C) testis

Answers

Uterus is the answer

When comparing 2 populations of animals, which statement most likely indicates that
they are the same species?

Answers

Answer:

they are able to produce fertile offspring

Explanation:

A species is a group of organisms that are able to produce fertile offspring. This criterion is the basis of the biological concept of species proposed by Mayr in 1970, who defined a species as a group of genetically similar interfertile populations which are reproductively isolated from other groups. In consequence, only those populations whose individuals can interbreed (mate) with one another to produce viable and fertile offspring must be considered to be part of the same species.

6. Compare the DNA of an offspring to the DNA of its parents.

Answers

Answer: In DNA the parent duplicates itself through a process known as mitosis. Any offspring is going to have the same exact DNA as the parent. (same characteristics, everything).

The comparison of the DNA of an offspring to the DNA of its parents is determined by the fact that every offspring gets 50% of its genome from each parent, but it is always a different 50%.

How does the DNA of parents compare to that of offspring?

In the process of sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote. In other words, an offspring inherits half of the genetic material from each parent. The children resemble their parents, but they are not identical to them.

During the process of meiosis, gametes get a random chromosome from each pair. This means that there are over 8 million possible DNA combinations from 23 chromosome sets. Due to this, the difference in the genetic material or DNA sequences is occurred due to the process of variations between them while DNA copying.

Therefore, the comparison is made due to the mechanism through which every offspring gets 50% of its genome from each parent, but it is always a different 50%.

To learn more about DNA comparison, refer to the link:

https://brainly.com/question/1523538

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Which of the following is not a characteristic of enzymes?
Each is used to break down substances.
Each has a specific substrate.
Each has an optimal temperature and pH.
O
Each has an active site.

Answers

Answer:

Each is used to break down substances.

Explanation:

Enzymes merely speed up a chemical reaction, not necessarily break down substances.

Each enzyme is used to break down substances is not a characteristic of enzymes. The correct option is A.

Thus, enzymes aren't just utilized to degrade things. Enzymes perform additional crucial tasks in addition to being essential for the breakdown (catabolism) of substances. In living things, enzymes operate as biological catalysts to quicken chemical processes.

Enzymes achieve this by reducing the activation energy needed for a reaction to happen and thereby speeding up the reaction rate. While some enzymes are engaged in the breakdown of chemicals, others are involved in the synthesis or modification of other molecules (anabolism).

Thus, the ideal selection is option A.

Learn more about enzymes here:

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When a pollutant is removed from the air by a natural process, it _____.


is gone forever

ends up somewhere else

causes chemical reactions

disrupts natural processes

Answers

Is gone forever .....

Answer:

it's ends up somewhere else

AG CLASS

Which of the following professionals would a city hire to oversee the trees in its parks and street plantings?


pomologist

viniculturist

arborist

botanist

Answers

[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]

Botanist

Answer:

Hello There!!

Explanation:

I think the answer is arborist because arborists are like tree surgeons.

hope this helps,have a great day!!

~Pinky~

Ed
Home
ENG
MATH
HI
1. The first person to describe cells was:

Answers

Answer:

Robert hooke

Explanation:

The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name.

HELP
Which of these is not a process that can cause speciation?

Answers

Answer:

I believe it's D. asexual reproduction

Match the description to the job title.
oversees the overall operations of a farm
helps keep farmers up-to-date with industry
technologies and practices
handles the care and condition of livestock
and their habitats
: agricultural extension agent
:: farm manager
:: feedlot manager

HELPP!!! ASAP

Answers

Answer:

oversees the overall operations of a farm - farm manager helps keep farmers up-to-date with industry  technologies and practices - agricultural extension agent handles the care and condition of livestock  and their habitats - feedlot manager

Explanation:

A farm manager manage and maintain the overall farm and supervise all activities ranging from seeding to harvesting.

Extension Agents are subject matter expert that make farmers aware of market trends, latest technological interventions, diet & nutrition, economic etc.

Feedlot Managers take care of day to day activities of feed yards.

Describe the difference between the level of classification known as a domain versus species. I will give brainliest

Answers

The major levels of classification are: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.Explanation:

4. which of these substances cannot pass through cell membranes?
A.Starch. B.Glycerol.
C. Amino acids. D. Monosaccharides​

Answers

cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.

Answer:

C. Amino acids. D. Monosaccharides

Explanation:

I think this is the answer hope it helps!

What is the life cycle of the sun? What are the phases of its life? Birth What is it now? ________________ What will it become? ______________ What will it be called as it dies out? _______________

Answers

Answer:

Main sequence, red giant, white dwarf.

Explanation:

The life cycle of the sun is called as solar cycle and is the phase of solar development. There are about seven-stage in its life cycle. Starting with the birth of the sun that is found in the solar nebula theory took place about 4.56 billion years.  The sun starts to enter the T Tauri stage, followed by the main sequence stage where the sun is currently in. After this stage that is when the sun runs out of hydrogen from its core.  It will produce violent helium flashes and will shrink its size. When this happens it will reach the tip of the red giant stage. Later on, the naked core will form into a white dwarf.

What is the outer skin called

Answers

Answer:

Epidermis

Explanation:

The epidermis is the thin outer layer of the skin.

Answer: The epidermis is the thin outer layer of the skin.

Explanation:

Question 18 (5 points)
During which stage of the cell cycle does the cytoplasm of a cell divide?
interphase
1)
cytokinesis
synthesis
prophase
B
ОООО
0

Answers

Answer:

I think brown going in a little while I’m on my way to work now I’m going in a little bit I’m late I can get my car done with you I don’t need you I can do you see you I don’t have any time I will miss it bye thanks bye bye coke bye bye hi bye bye coke bye bye hi hi Johnny for you

Explanation:

1. Which of these organisms provides the most energy in a typical forest ecosystem?
birds
lynx
moose
trees

Answers

Answer:

D. trees

Explanation:

trees are everywhere are really great for many things

Answer:

I believe the answer should be trees

(08.01 MC)
A skunk living in the northern part of the United States is exposed to extreme cold and food shortages during the long winter months.
Based on the climate, what do you predict the skunk's innate response to these environmental factors will be?

A: Increase cellular respiration and ATP production
B:Estivate with a period of dormancy until the warmer weather arrives
C:Migrate to regions of warmer weather
D:Slow down its metabolic rate and lower its body temperature

Answers

Answer: cccccccc

Explanation:

Answer:

I think the answer should be B, because skunk doesn't migrate or hibernate, and A doesn't make sense because when animal facing temperature drop and food shortage they do not speed up metabolic process, instead they will slowdown the metabolic process and save as much energy as possible.

(if you know what the correct answer is please tell me I'm stuck with this question too:) )

Explanation:

Research the Internet about a problem that occurs with the nervous system. For your first post, write a description about the disease/disorder you chose. What are some of the symptoms? Is it treatable/curable? If so, how? Is it genetic or caused by something environmental? Why did you choose this particular problem? Does it affect a particular group of individuals more than others? Etc? Do you have any personal experience with this problem? List at least one source from your research.

Answers

Answer:

Alzheimer's disease.

Explanation:

It is A progressive disease that destroys memory and other important mental functions.

Brain cell connections and the cells themselves degenerate and die, eventually destroying memory and other important mental functions.

Symptoms :

Cognitive: mental decline, difficulty thinking and understanding, confusion in the evening hours, delusion, disorientation, forgetfulness, making things up, mental confusion, difficulty concentrating, inability to create new memories, inability to do simple maths, or inability to recognise common things

Behavioural: aggression, agitation, difficulty with self care, irritability, meaningless repetition of own words, personality changes, restlessness, lack of restraint, or wandering and getting lost

Mood: anger, apathy, general discontent, loneliness, or mood swings

Psychological: depression, hallucination, or paranoia

Also common: appetite loss, difficulty with skilled movement, or paraphasia

there is no cure for Alzheimer's disease or a way to stop or slow its progression, there are drug and non-drug options that may help treat symptoms.

Cause:

Alzheimer's disease is thought to be caused by the abnormal build-up of proteins in and around brain cells.

I chosed it because it is very common

Over 1.5 million people come up with this disease

should humans be used as subject for experiment​

Answers

Answer:

Human experimentation refers to the use of human beings as experimental subjects. A subject is defined as an individual who is observed or experimented with by an investigator; an investigator is a qualified individual who conductsresearch. Humans have long been used as subjects for a variety of experiments.

Explanation:

An amusement park has recently been constructed along the coast, increasing automobile traffic in the area. What is the impact of the increased traffic in the area on oceans?

a) Increases in fossil fuel emissions and greenhouse gases
b)Decreases in atmospheric gases and biodiversity
c)Decreases in shoreline and bird migration distances
d)Increases in habitat for marine mammals and warmer water temperatures

Answers

Answer:

increases in fossil fuels emissions and greenhouse gases.

Explanation:

Answer:

A

Explanation:

2. Carbon trading is a mechanism by which companies may purchase the right to pollute over a set period, up to a certain quota, established by the government. In the market-based
approach, what's this tool called?
A. Market-based quota
B. Property rights instrument
C. Market-based instrument
D. Tax break

Answers

Answer:

Explanation:

Market-base instrument

Market-based instruments

What is carbon trading ?

Carbon trading is the process of buying and selling permits and credits that allow the permit holder to emit carbon dioxide.

What are market-based instruments ?

Market-based instruments (MBIs) are taxes, charges, levies, tradable permit schemes, deposit refund systems, subsidies etc.

To learn more about carbon trading here

https://brainly.com/question/26342478

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explain how mutation evolution might
occur in a population

Answers

Answer:

mutations create a new particular gene, a new allele. If that allele is passed down to the next offspring and the next, the mutation would be carried throughout the population. Some of the species in the population might not show any symptoms of a mutation or not feel the effects of it, but pass it down. If the mutation is neutral (causing no harm or no good), it may be passed down. If the mutation is beneficial to the species, and helps them survive, it may be passed down more. If the mutation is harmful, the mutation may eventually stop being passed down, and start to only appear if something happens genetically (mutation still may happen, but not because of passing down from parent to offspring).

Explanation:

what is extracellular matrix ? in simple words pls​

Answers

a three-dimensional network consisting of extracellular macromolecules and minerals, such as collagen, enzymes, glycoproteins and hydroxyapatite that provide structural and biochemical support to surrounding cells.
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Explain the significance of Gorbachevs domestic policy. Which situation is a result of geotropism?Select one:a. Gravity pulls down on all parts of a plant.b. Leaves are supported on strong stems.c. A plant falls down when it wilts.d. A stem turns to grow upward against gravity. On a scale drawing with a scale of 1 cm:0.75 ft, the height of a mailbox is 6.5 cm. How tall is the actual tree? A. 5.578 ft B. 4.578 ft C. 5.785 ft D. 4.875 ft Number six please help! Need a detailed explination to solve 4/5 = 0.8 by dividing (will give branliest) According to the video, what type of organization trains and employs most Air Traffic Controllers? private companiesnonprofit organizationsthe state governmentthe federal government HAMLETQUESTIONS ON EVERY SCENE:Act 1, Scene 11. Who are the characters who appear in this scene?2. Explain their relationships to one another.3. Explain the vital importance of this scene.4. How is it apparent that Barnardo is nervous?5. How many times has the ghost appeared?6. When the ghost appears, it is armed. What does this signify?7. Who is young Fortinbras? Why is he threatening to attack Denmark?8. What does Marcellus mean when he says, "the night is joint-labourer with the day"? What isthe cause of all this labour?9. Why does Horatio say he will cross the ghost?10. What do the three men decide to do about their experience and why? Using the human species as an example, explain what is meant by a variation of traits. A box shaped like a rectangular prism has a height of 17 in and a volume of 2.720 in^3. The length is 4 inches greater than twice the width. What is the width of the box?O -10 inO 8 inO 20 inO 40 in How has life for a Mexican immigrant changed in the past 100 years? _____ has been used for washing but not sewagegreywaterbrown watergroundwater ethanolblackwater Which of the following statements about womens rights is true?A)Women received the right to vote with the passage of the Fourteenth Amendment.B)Women received the right to vote before African Americans.C)In 1920, women received the right to vote nationally through an amendment to the Constitution.D)In 1920, the U.S. Supreme Court deliberated over womens voting rights and did not reach a consensus.Please just put one of A,B,C,D to make it simple CH3-o-CH _CH3[tex]c[/tex] On what level were the knights in the feudal system in medieval Europe? What was their role in society? A zoo has some new exhibits.In a survey, zoo attendees are asked to choose their favorite.The results are shown in the following table.(a)Find the percentage for each type of animal.Type of animal Number of zoo attendees PercentageKoala 648 find percentage Jaguar 216 find percentage Anteater 288 find percentage Gorilla 384 find percentage Penguin 864 find percentage (b)Construct a percent bar graph for the data. We are not sure when griots first became important parts of African culture, but the first reference to them in African culture came in the Suninka Daousi, which wereGroup of answer choicesan epic set of poems.records kept the inside of caves. Is a trapezoid always a square? Select the best answer in each drop-down list.Your boss is pointing out your mistakes on your last assignment. You should .You and a coworker are having a disagreement about how to handle a project. You should .Youve reached an agreement with a coworker on how to resolve the problem. You should now .You need to give constructive criticism to a coworker you don't really like. You should Waterways has a sales mix of sprinklers, valves, and controllers as follows.Annual expected sales: Sale of sprinklers 460,000 units at $26.50Sale of valves 1,480,000 units at $11.20Sale of controllers 60,000 units at $42.50Variable manufacturing cost per unitSprinklers $13.96 Valves $7.95 Controllers $29.75 Fixed manufacturing overhead cost (total) $760,000Variable selling and administrative expenses per unit:Sprinklers $1.30 Valves $0.50 Controllers $3.41 Fixed selling and administrative expenses (total) $1,600,000A) Determine the sales mix based on unit sales for each product.B) Using the annual expected sales for these products, determine the weighted-average unit contribution margin for these three products.C) Assuming the sales mix remains the same, what is the break-even point in units for these products? Ryan conducted a 6-day study observing the effects of an organic plant food on the growth of his sprouting bean plant. He tracked these two pieces of information: the amount of plant food remaining in the container after each day's feeding the height of the plant over time