Imagine that you discover a new operon, called the hfc operon. This operon includes a series of structural genes: hfc A, hfc B, and hfc C. Each of these structural genes encodes an enzyme. These enzymes are involved in a metabolic pathway that results in the production of Molecule X. The gene hfc q, which is found outside of the operon, encodes Protein Q. When Molecule X binds to Protein Q, Protein Q binds to the operator of the hfc operon. When Protein Q binds to the operator, the structural genes of the operon are not transcribed. In the absence of Molecule X, Protein Q cannot bind to the operator, and the structural genes of the operon are transcribed.

Required:
Is the hfc operon inducible or repressible?

Answers

Answer 1

Answer:

what

Explanation:


Related Questions

Which process occurs by osmosis?


Select one:
a. plant roots absorbing water from the soil
b. the small intestine absorbing fatty acids into the blood
c. the small intestine absorbing glucose into the blood
d. plant roots absorbing mineral ions from the soil

Answers

The answer is A.
Because osmosis involve water.

Plant roots absorbing water from the soil occurs by osmosis.

Are roots absorbing water osmosis?

Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.

Do plants absorb water through osmosis?

Plants absorb water and minerals salt from the soil with the help of root hairs. They absorb water by the process of osmosis. Osmosis is the movement of water molecules (solvent) from a lower concentration solution to a higher concentration solution through a semi-permeable membrane.

Learn more about osmosis here https://brainly.com/question/11534932

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5. In 1928, Alexander Fleming noticed that a mysterious blue-green fungus had grown on some bacterial colonies that were known to cause strep throat. Upon closer inspection, he noticed that the bacterial colonies did not survive when introduced to the fungus. He questioned if something in the fungus stopped the bacteria from growing. Which steps in the scientific method are included in this story

Answers

Answer:

The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.

Explanation:

The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.

In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.

based on the fossil evidence the correct sequence in which life evolves in PLEASSE HELPPP THIS IS A BIG GRADE

Answers

Answer: Fossil evidence that shows the correct sequence in which life evolves is B i think im not sure but im pretty sure its B

what are some examples of heart healthy fats?​

Answers

Answer:

Omega-3 fatty acids can help lower triglycerides, a type of fat that clogs arteries. Monounsaturatedfatsincludecanola,olive, and peanut oils. Other good sources are olives, avocados, nuts, and nut butters. These fats can help lower "bad" (LDL) cholesterol and raise "good" (HDL) cholesterol.

Explanation:

My dad takes omegas because he has high cholestrail which that also helps with heart problems.

Which of the following are similarities between meiosis and mitosis?
Check all that apply.
2 points
There are two rounds of division
DNA gets replicated during S stage of interphase
prophase, metaphase, anaphase, and telophase occur in that order
four haploid daughter cells are produced

Answers

Answer: DNA gets replicated during S stage of interphase

prophase, metaphase, anaphase, and telophase occur in that order

four haploid daughter cells are produced

Explanation:

What is the role of the respiratory system?
What happens when you breathe?
What happens in the circulatory system?
What are the structures of the heart?
How does blood flow through the circulatory system?
What does blood contain?

Answers

Answer:

The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. It contains these parts: two lungs. ... various structures in the chest that allow air to move in and out of the lungs.

Is there a human carrying capacity on Earth? Explain why or why not.

Answers

Answer: Every species has a carrying capacity, even humans. However, it is very difficult for ecologists to calculate human carrying capacity. Humans are a complex species. We do not reproduce, consume resources, and interact with our living environment uniformly.

HOPE THIS HELPS

what stores groundwater

Answers

Answer:

An aquifer is a rock layer that stores groundwater and allows the flow of groundwater.

How did Bourne believe that an object could be made to rise and sink at will?
a.
By increasing and decreasing volume
c.
Putting more force on the object than the buoyant force
b.
Using a series of weights
d.
Piping air in from the surface


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

A

Explanation:

a. By increasing and decreasing volume

14. Cats have bones in their front legs that are similar to humans and also similar to the bones in the front flipper of a turtle. What do scientists hypothesize that
this means?
a These are homologous structures - they have similar structure despite their different functions and provide evidence that they evolved from a common ancestor.
b These are homologous structures - because of their different functions they do not provide evidence of a common ancestor and the limbs did not evolve from a single
common ancestor.
c These are analogous structures - they have similar structure despite their different functions and provide evidence that they evolved from a common ancestor.
d These are analogous structures - because of their different functions they do not provide evidence of a common ancestor and the limbs did not evolve from a single
common ancestor.


Accounts with not serious answers will be reported

Answers

Answer:

I believe that the answer is D.

Explanation:

This is because these organisms don't seem to evolve from a common ancestor but do seem to look similar.  

What is an immune response?

Answers

Answer:

The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.

Hope this helps!

write it in your own words
Why is it important to know there are good and bad bacteria?

Answers

It is important to know there are good and bad bacteria because most bacteria cause diseases and harm your body while the good bacteria helps your body and keep the diseases away. Good bacteria helps protect the cells in your body from invading pathogens and promotes the repair of damaged tissue, because of the good bacteria the bad bacteria wouldn’t have a single chance to grow and cause diseases!

Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart

Answers

The correct option is :

=》arteries do not have valves and veins do have valves.

Arteries don't have valves because back flow of blood isn't possible due to high pressure, but blood in veins doesn't have high pressure just like arteries, so to stop backflow of blood, veins have valves.

An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
A. The eruption preserved an ancient human civilization.
B. The eruption's heat and energy killed all the farmers in its path.
C. The eruption contributed to global warming.
D. The eruption's ash and gas significantly dimmed the sun.
sun
E. The eruption killed many local people.

Answers

D. Leading to reduced crop output

What is the most important influence of the forest ecosystem on the environment

Answers

Answer:

Forests

Explanation:

Forests have also sanitary influences upon environment due to the production of oxygen through photosynthesis.

The study of the environment is called ecology. There are two types of factors for an ecosystem and these are a biotic and abiotic factors.

The correct answer is light

What is photosynthesis?

The process of the formation of food by trapping the sunlight with the help of chloroplast is called photosynthesis.

According to the question, the most influential factor which affects the environment is light as all the plants directly depend on the light for the formation of food and all the other species are dependent on plants either directly or indirectly.

Hence, the correct answer is light.

For more information about the light, refer to the link:-

https://brainly.com/question/1388366

What is the answer to number three and four I’m like totally confused


Answers

Answer:

I think it is true for 3 and false for 4 but i am 100% so i won't trust me fully so yeah.

Explanation:

Compare and contrast the outer core and the inner core. Mention 2 differences between the two cores.

Answers

Answer:

The outer core is colder than the inner core, and they are both inside the Earth. The inner core is the deepest layer of Earth's layers.

Explanation:

Question 42
1 pts
A man with type O blood has a child with a women who is tye AB. What is the probability
that they will have a child with type o blood?
O 100%
O 50%
O 0%
25%

Answers

Dababy dababy dababy dababy

I need to know what is the answer for number 6 and 7 and that’s all

Answers

Answer:

you have it right

Explanation:

the boundary between two air masses IS CALLED A FRONT

A STATIONARY FRONT causes light rain over several days

The virus first hypothesis, suggests that:

a.
viruses evolved from the living cells
b.
viruses may have been the first self-replicating entities
c.
viruses originate from bacteria cells
d.
viruses don't evolve

Answers

Answer:

b.

viruses may have been the first self-replicating entities

Explanation:

The “virus-first” hypothesis states that viruses predated cells and contributed to the rise of cellular life. A significant proportion of all the viral genomes encode for genetic sequences that lack clear cellular homologs. Presence of such virus-specific sequences provides support to their unique origin.

the correct answer is B

have good day/night !

What can cause thermal expansion that results in a change in the density of ocean water?

a climate change
b freezing temperatures
c weathering and erosion
d addition of sediments

Answers

Answer:

Explanation:

B because Thermal expansion is caused when seawater expands because of the higher temperature of the water. Since the oceans absorb heat from the atmosphere, when the atmosphere becomes warmer so will the oceans. Warm seawater has a greater volume than cold seawater.

Eukaryotic gene regulation takes place through the use of RNA-
binding proteins called ________
and
short regions of DNA that help position RNA polymerase called
_________.
At the organism level, ________.
control the differentiation and development of cells during
embryonic development.

Answers

Answer:

Hi your answers would be transcription factors, TATA boxes, and homeotic genes

Eukaryotic gene regulation takes place through the use of RNA- binding proteins called transcription factors and short regions of DNA that help position RNA polymerase called TATA boxes.

At the organism level, homeotic genes control the differentiation and development of cells during embryonic development.

Transcription factor:

Transcription factors are proteins involved in the process of converting, or transcribing, DNA into RNA.  Transcription factors include a wide number of proteins, excluding RNA polymerase, that initiate and regulate the transcription of genes.  Regulation of transcription is the most common form of gene control.

Find more information about genes here:

brainly.com/question/1480756

Which cell division phase is shown in the image?
A) telophase
B) metaphase
C) prophase
D) anaphase

Answers

Answer:

metaphase is the correct answer of this

Answer:

b is correct

Explanation:

ok ok ok ok ok ❤️❤️

Potential energy is energy that is not in
motion. Which of the following is an
example of potential energy?
A. riding your bicycle
B. sitting on a bench
C. mowing your lawn
Copyright © 2003 - 2021 Acellus Corporation. All Rights Reserved.

Answers

The answer is B sitting on the beach. The only answer that is not in motion is sitting on the beach. Hope this helped

Describe at least two costs and two benefits of using a desalinization plant to obtain more freshwater?

Answers

Answer:

Advantages:

1. provide drinking water in desertic regions

2. excellent water quality  

Disadvantages:

1. high cost to obtain freshwater

2. possible harmful effects on the aquatic ecosystem

Explanation:

Desalinization plants are centers that provide an independent source of water, critical for human needs. Desalination plants function to remove salt from seawater, thereby turning this water into potable drinking water, which is of vital importance for areas where freshwater is scarce (e.g., desertic regions). Moreover, desalinization plants meet (or even may exceed) standards for water quality because they are prepared to remove impurities (not only salts) from seawater. Nonetheless, desalinization plants may also exhibit disadvantages. In the first place, desalinization is an expensive process that requires an important amount of electricity to push water through a filter (desalinization occurs via reverse osmosis). Finally, desalinization plants may alter aquatic ecosystems in a negative way since the discharge of seawater modifies the salinity and decreases the oxygen levels in the water at the disposal site.

Calculate the net force in Newtons of the following situation <-2N+->8N

Answers

Answer:

The correct answer is: + 6 N to the right side.

Explanation:

In this question, there are two opposite forces one towards the left and the second one towards the right. The left-pointing force value of 2 [N] while the other Force points to the right with a value of 8 [N].

In arithmetic representation it could be demonstarted or write as:

F = -2 + 8

F = + 6 [N]

The force pointing right side is more and will have the force of = 6 N

What makes human populations increase or decrease in size?

Answers

Human populations are increased when people give birth and the population decrease after the death of humans.

Are the following structures found in plant cells, animal cells, or both?
cell membrane
cell wall
nucleus
ribosomes
chloroplasts
mitochondria

Answers

cell membrane- both
cell wall-plant
nucleus-animal
ribosomes-plant
chloroplasts-plant
mitochondria-both

Answer:

chloroplasts

Explanation:

During which process does heat transfer occur because of density differences in water or air?
A. Conduction
B. Pollution
C. Radiation
D. Convection
2. Explain your answer.

Answers

Answer: D. Convection

Explanation: As water's temperature increases in the presence of a heat source, it will become less dense and rise. As it moves up and away from the heat source, it cools and becomes denser and sinks.

Answer:

The correct answer is D. Convection.

Explanation:

Convection occurs due to the differences in density, and only happens in gases or liquids. The heat is transferred by the movement of a heated fluid, which is air or water.

Hope this helps! :)

PLS HELP WILLING TO GIVE BRAINLIEST

Answers

Answer:

1.  In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed then recolonized following the disturbance.

2.  Primary and secondary succession occur after both human and natural events that cause drastic change in the makeup of an area.

3.  Volcanic eruptions, Retreat of glaciers, Flooding accompanied by severe soil erosion, Landslides, Nuclear explosions, Oil spills.

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