The kidney releases erythropoietin, a hormone that functions in the maturation of white blood cells
This is not the function of urinary system, because erythropoietin secreted by the kidney stimulates red blood cell production (erythropoiesis) not white blood cells. Erythropoietin also called hematopoietin is secreted as a response to hypoxia (Insufficient oxygen). Elevated levels of this glycoprotein are usually in disorders such as anemia, and hypoxemia (extremely low oxygen levels) due to chronic lung disease.
Among the stated choices, the function that is not performed by the urinary system is 'The kidney releases erythropoietin, a hormone that functions in the maturation of white blood cells.' Erythropoietin, produced by the kidneys, is involved in the production of red blood cells instead.
Explanation:The urinary system serves several crucial functions including the excretion of metabolic wastes, maintenance of water-salt balance, pH balance, and the production of hormones such as erythropoietin, which triggers the formation of red blood cells. However, among the stated functions in the question, the following is NOT a function of the urinary system: 'The kidney releases erythropoietin, a hormone that functions in the maturation of white blood cells'. While the kidney does release erythropoietin, it is actually involved in the maturation and production of red blood cells, not white blood cells.
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Which of the following statements apply to the variation in human skin color? Select all that apply. Select all that apply. Human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of Africa. Variability in human skin color can be explained by the activity of a single gene. The color of human skin and the skin of our closest primate relative exhibits a similar range in variability. Human skin color variation is primarily determined by the type and amount of melanin pigment in the skin. Human skin color variation likely evolved in response to differences in the intensity of sunlight around the world.
The correct answers are:
Human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of Africa.
Human skin color variation is primarily determined by the type and amount of melanin pigment in the skin
Human skin color variation likely evolved in response to differences in the intensity of sunlight around the world.
A skin pigmentation of an individual is under the influence of both:
• Genetics-individual's parents' genetic makeup,
• Environment-exposure to sun.
Human skin color evolved by a process of natural selection in order to regulate the amount of ultraviolet radiation that penetrates the skin.
Pigment responsible for skin color is melanin, produced by skin cell-melanocytes through the process of melanogenesis. Melanogenesis is initiated by exposure to UV radiation, which causes the skin to become darker.
Human skin color variation evolved as our ancestors migrated out of Africa in response to differing sunlight intensity around the world. This variation cannot be attributed to a single gene but is determined by the type and quantity of melanin, involving multiple genes. The range of variability in human skin color is far wider than in our closest primate relatives.
Explanation:Human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of Africa. In fact, all humans are believed to have descended from Africa, reflected by the genetic variance found throughout the world. Moreover, skin pigmentation underwent adaptation during the Neolithic era in response to variations in ultraviolet radiation, leading to different skin tones within our species.
However, it is incorrect to state that variability in human skin color can be explained by the activity of a single gene. Human skin color is largely determined by the type and amount of the melanin produced by melanocytes in our skin, and this process involves multiple genes. As for the comparison with our closest primate relatives, the range of human skin color variability is far wider and complex than that observed in primates.
The variation in human skin color likely evolved in response to differences in the intensity of sunlight around the world. Populations living near the equator, where sunlight is most intense, tend to have darker skin which provides a certain level of protection against UV damage. On the other hand, populations living at higher latitudes, where sunlight is less intense, generally have lighter skin, which allows for better Vitamin D synthesis.
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The enzyme dna _______ chemically bonds together two dna strands and removes nicks in a dna duplex.
The enzyme DNA ligase chemically bonds together two DNA strands and removes nicks in a DNA duplex.
This enzyme is catalyzer for the formation of a phosphodiester bonds. Three major processes in which DNA ligases are involved are:
• DNA replication- after the RNA primers are removed, the remained nicks are replaced by the enzyme DNA ligase
• DNA repair-usually single-strand breaks are repaired by DNA ligase and complementary strand of the double helix is used as a template
• Recombination of DNA in experiments- in gene cloning, DNA ligase joins DNA molecules together to form recombinant DNA.
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Which phrases describe this plate boundary?
Check all that apply.
A) may occur in oceans
B) may form rift valleys
C) is a type of transform boundary
D) is a type of convergent boundary
E) is a region where earthquakes occur
The phrases that describe this plate boundary is
A. may occur in the oceans
C. is a type of transform boundary
E. is a region where earthquakes occur
Answer:
The following are the phrases that describe the mentioned plate boundary are:
It may take place in the oceans,
Is a kind of transform boundary, and
Is a region where earthquake take place.
Explanation:
In the plate tectonic theory, the lithosphere gets dissociated into tectonic plates that goes through some kind of bigger scale motions. The boundary regions among the plates are also known as plate boundaries. On the basis of their motions with regard to each other, these plate boundaries are of three types: convergent, divergent, and transform.
sunlight is an example of what type of energy?
Sunlight is energy that is radiating and transferable
The correct answer would be, Electromagnetic Radiation.
Sunlight is an example of Electromagnetic Radiation.
Explanation:
Sunlight is the light that we get from the sun. Sunlight provides us energy in the form of Electromagnetic Radiation. This sunlight is responsible for the life of all the living things. Sunlight is important for humans, as well as for animals and plants.
Infrared, visible, and ultraviolet light are the ones given off by the sun. These rays are the parts of electromagnetic radiations.
Sunlight reaches the Earth by passing the Ozone layer, which means the sunlight is filtered from the harmful rays before reaching the Earth. Earth gets the sunlight when the Sun is above the horizon and that is the time of the day.
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When you go to a salon, do you ask to straighten your hair or iron your hair?
Whats the correct term?
straighten your hair ! its worded properly and its the most common way of saying it.ironing your hair sounds wrong and difficult its much better to cut to the chase and say you want your hair straightened
always be professional in a work place! :)
have a good day <3
When you go to a salon, you ask for a hair straightening treatment to make your hair straight. It is different from ironing your hair.
Explanation:When you go to a salon and want to make your hair straight, you usually ask for a hair straightening treatment. This involves using heat or chemicals to make the hair smooth and remove any curls or waves. It is different from ironing your hair, which refers to using a flat iron or hair straightener to temporarily straighten the hair.
What is limb darkening?
A.
The periphery of the chromosphere appears darker than the center.
B.
The periphery of the corona appears darker than the center.
C.
The periphery of the core appears darker than the center.
D.
The periphery of the photosphere appears darker than the center.
D. The periphery of the photosphere appears darker than the center.
Explanation;Limb darkening is the phenomenon whereby the Sun is darker near its limb than near the center of its disk.Photosphere is the region in the solar atmosphere from which most of the visible light escapes into space and the limb is the apparent edge of the Sun as seen in the sky.Limb darkening is the feature in which the sun appears darker near the edges.Final answer:
Limb darkening is an effect where the periphery of a star's disk, notably the photosphere, appears darker than the center due to light traversing a longer path through the atmosphere at the edges, leading to more absorption and lower intensity as we observe it. This effect is influenced by the temperature and the density of the sun's gases and is more pronounced for shorter wavelengths like the blue light.
Explanation:
Limb darkening is an optical effect observed in stars, such as the Sun, where the center part of the star's disk appears brighter than its edge or limb. The reason for this phenomenon involves the star's atmosphere and its interaction with light. Light that comes from the edge has to travel through more of the star's atmosphere compared to light coming from the center which makes the light from the edges appear darker.
The photosphere is the layer of a star that we typically see as its surface. When we observe limb darkening, we are looking at the effects of varying temperatures and densities as well as the light-absorbing properties of the star's atmosphere. Light emanating from the center of the disk has traveled less through the atmosphere compared to the light coming from the periphery. Therefore, the center is seen as brighter, and the limb appears darker.
This darkening is more pronounced at the blue end of the spectrum and is influenced by factors such as the overall absorption of the sun's rays by the atmosphere and the varying depths to which we can see into the sun's gases based on our viewing angle.
According to the Anti-Malthusians, we should be more concerned with ______ than overpopulation.
A. genetically modified foods
B. population shrinkage
C. the effects of pollution
D. keeping cities in chec
The answer is B population shrinkage
Why are frameshift mutations likely to be more detrimental than point mutations, in which a single pyrimidine or purine has been substituted?
because their effect is likely to be detrimental for transcription
because their effect extends to all chromosomes
because they are likely to change more than one amino acid
because they are likely to damage ribosomes
The answer is:
Because they are likely to change more than one animo acid
HOPE THIS HELPS
Make sure its CORRECT!
Frameshift mutations likely to be more detrimental than point mutations, in which a single pyrimidine or purine has been substituted because they are likely to change more than one amino acid.
What is meant by amino acid?Amino acids are molecules that combine to form proteins.Amino acids and proteins are the building blocks of life.Amino acids are concentrated in protein-rich foods such as meat, fish, and soybeans.Frameshift mutations likely to be more detrimental than point mutations, in which a single pyrimidine or purine has been substituted because they are likely to change more than one amino acid.
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Microscopic thin-walled tubes carrying blood are called
A : Arterioles
B : Capillaries
C : Arteries
the answer is B. please let me know weather its right or wrong
Capillaries are the microscopic thin-walled tubes that carry blood.
Explanation:The correct answer is B: Capillaries. Capillaries are microscopic thin-walled tubes that carry blood between arterioles and venules. They are the smallest blood vessels in the body and play a vital role in the exchange of oxygen, carbon dioxide, nutrients, and waste products between the blood and surrounding tissues.
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How do loon, heron, and kingfisher differ in methods by which they hunt for fish?
Loons, herons, and kingfishers have different methods of hunting fish based on the movement of their feet over the water body.
What are the different methods of hunting fish?Loons, herons, and kingfishers are the birds that catch fish as their prey. The birds have sharply pointed beaks, but their methods of hunting are different.
The hunting of fish by birds is done as follows:
The loon has feet similar to the duck. Loons propel the fish with their feet and duck down to catch the fish from the water. The loons have the ability to flip and change direction.The herons are able to stand still in the water body where they have their prey. The herons have long necks, and they dip their heads inside the water to catch the running fish.The kingfisher is able to catch the prey by keeping an eye on them. The kingfisher spots the prey and attacks it by submerging itself in the water body.Thus, the birds catch their prey with the movement of their feet over the water bodies.
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Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa? When an area is malaria free, the HbS allele frequency is between 0 and 2.02. When an area is holoendemic, the HbS allele frequency is between 0.52 and 4.04. When an area is malaria free, the HbS allele frequency is between 12.64 and 18.18. When an area is holoendemic, the HbS allele frequency is between 0 and 0.51.
The best explanation for the relationship between HbS allele frequency and malaria endemicity in Africa is that in holoendemic areas, b) where malaria is prevalent, the HbS allele frequency is higher (between 0.52 and 4.04) due to natural selection favoring its resistance to malaria. In contrast, in malaria-free zones, the frequency remains low (between 0 and 2.02) as there is no selective benefit to the allele.
The relationship between HbS allele frequency and malaria endemicity in Africa is influenced by natural selection due to malaria resistance. Individuals with the HbS allele have sickled erythrocytes that are poor hosts for the malaria-causing Plasmodium parasite, therefore they have a survival advantage in malaria-endemic areas. Consequently, in regions with high malaria incidence such as holoendemic areas, the HbS allele frequency is higher due to natural selection preferring traits that confer resistance to malaria. However, in malaria-free areas, there is no selective advantage to having the HbS allele, and therefore its frequency remains lower.
Applying this knowledge to the provided statements, the best explanation is that b) when an area is holoendemic, the HbS allele frequency is between 0.52 and 4.04. This range indicates a higher prevalence of the HbS allele where malaria is widespread. On the other hand, when an area is malaria-free, the advantage of having the HbS allele disappears, resulting in much lower frequencies which would be between 0 and 2.02.
What happens as a result of ion flow at a presynaptic terminal?
Synaptic vesicles migrate to the plasma membrane and release acetylcholine.
Acetylcholine is passively transported from the presynaptic neuron.
Acetylcholine is actively transported to the postsynaptic neuron.
Ligand-gated sodium channels open.
Sodium ions diffuse into the cell.
The correct answer is: Synaptic vesicles migrate to the plasma membrane and release acetylcholine.
Action potential travels through the membrane of the presynaptic cell causing the channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine), Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells.
According to the nebular hypothesis, when did nuclear fusion begin?
After the planets formed.
When the sun was 5 billion years old.
When the nebula first exploded outward into space.
When particles were pulled together so tightly they combined.
When particles were pulled together so tightly they combined.
Explanation;The solar nebular hypothesis describes the formation of our solar system from a nebula cloud made from a collection of dust and gas.It is believed that the sun, planets, moons, and asteroids were formed around the same time around 4.5 billion years ago from a nebula.According to this theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas and dust.Answer:
The correct answer is "When particles were pulled together so tightly they combined".
Explanation:
The nebular hypothesis is the most accepted hypothesis about how the Solar System was created. According to this hypothesis a nebula collapsed and created the particles that later formed the Solar System. First the gravitation force put the particles close to each other. Later, nuclear fusion began when particles were pulled together so tightly they combined and sufficient temperature and pressure was achieved.
Which of the following statements is a part of the cell theory
I would say either C or D beside A say most living things are made of cells. No, all living things have cells. And B is right but C or D makes more sense.
Answer:
E. A, B and C only.
Explanation:
The cell theory was formulated by Theodor Schwann, Matthias Schleiden, and Rudolph Virchow. It consist of 3 major components:
The cell is the basic unit of lifeAll living organisms are made of cellsCells arose from pre-existing cells.Options A, B, and C are in accordance with the cell theory.
Hence, the correct option is E.
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From the list below, select four types of agricultural research that could lead to more sustainable farming.
the improvement of nutritional quality
the storage of crops
economic resources
farming without funding
the building of tractor parts
the study of ancient tools
the use of pesticides
the production of crops
the marketing of crops
The improvement of nutritional quality, economic resources, the production of crops, and the marketing of crops.
The improvement of nutritional quality will help make better crops so that they turn out beautiful.
Economic resources helps make the crops so that you have a ton of crops.
The production of crops will help with more sustainable farming.
The marketing of crops will help you with getting money and to afford for making more crops next year.
The four types of agricultural research that could lead to more sustainable farming are given below:
The improvement of nutritional quality.Economic resources. The production of crops. The marketing of crops. What is sustainable farming?Sustainable farming may be defined as a methodology that strives to support farmers, resources, and communities by encouraging farming approaches and strategies that are beneficial, environmentally valuable, and adequate for communities.
Therefore, it is well described above.
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Hanges of motion are caused by A) all forces. B) strong forces. C) balanced forces. D) unbalanced forces.
D. unbalanced forces
Answer:
D. Unbalanced forces
Explanation:
Say you have a Box sitting on the ground. If you have two people pushing the box with the same amount of force, its not going to go anywhere. But if you have two people pushing it with unequal amounts of force, the box will go towards the person with the weaker side because there is more force going against it.
Which statement about the beak size of finches on the island of Daphne Major during prolonged drought is true? Each bird's survival was strongly influenced by the depth and strength of its beak as the drought persisted. The frequency of the strong-beak alleles increased in each bird as the drought persisted. Each bird evolved a deeper, stronger beak as the drought persisted. Each bird that survived the drought produced only offspring with deeper, stronger beaks than seen in the previous generation.
The survival of finches on Daphne Major during prolonged drought was influenced by the depth and strength of their beaks. This example of natural selection led to an increase in the average beak size in the surviving population. However, this doesn't mean that individual birds evolved stronger beaks within their lifetime, but rather that the larger-beaked birds had a survival advantage and were more likely to reproduce.
Explanation:The accurate statement about the beak size of finches on the island of Daphne Major during prolonged drought is: This phenomenon can be observed as an example of natural selection. During the drought period in 1977, small seeds that small-beaked finches usually consumed were much less available. Hence, finches with deeper and stronger beaks, which were suitable for larger, harder seeds, had a survival advantage. This natural selection process led to an increase in the population's average beak size in the following generation.
This is not to say that the birds themselves evolved deeper, stronger beaks within their lifespan; evolution occurs over many generations through changes in genetic make-up. Individual birds did not change their beak size, nor did they selectively produce offspring with only stronger and deeper beaks. Instead, the natural selection process resulted in the better survival and more frequent reproduction of large-beaked birds, which then led to higher percentage of large-beaked offspring in subsequent generations.
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The true statement regarding finch beak size is that each bird's survival was strongly influenced by the depth and strength of its beak during the drought. Finches with larger, stronger beaks had a survival advantage, leading to a change in the population's average beak size. This is evidence of evolution by natural selection and represents microevolution within the population.
The statement about the beak size of finches on the island of Daphne Major during prolonged drought that is true is: Each bird's survival was strongly influenced by the depth and strength of its beak as the drought persisted. This observation was made by biologists Peter and Rosemary Grant, who studied the finches during a significant drought in 1977. They noted that finches with larger, stronger beaks were able to crack open larger and tougher seeds, thus they had a better chance of surviving the drought. As a result, those birds were more likely to reproduce, leading to an increase in the average beak size in the finch population within two years, which is evidence of evolution by natural selection. This is an example of microevolution, as it is a change in the characteristics within a population over a relatively short period of time.
What was the most significant conclusion that Gregor Mendel drew from his experimentswith pea plants?
A) There is considerable genetic variation in garden peas.B) Traits are inherited in discrete units, and are not the results of ʺblending.ʺC) Recessive genes occur more frequently in the F1 than do dominant ones.D) Genes are composed of DNA.E) An organism that is homozygous for many recessive traits is at a disadvantage.
The correct answer is: B) Traits are inherited in discrete units, and are not the results of ʺblending.ʺ
Important conclusions form Mendelian experiments are:
• The inheritance of each trait is determined by "units" or "factors" (we call it genes today) that are passed on offspring unchanged
• An individual inherits one unit from mother and another from father (for each trait)
• A trait may not show up in an individual but can still be passed on to the next generation (allele).
Gregor Mendel's most significant conclusion from his experiments with pea plants was that traits are inherited in discrete units, not through blending. This concept set the foundation for modern genetics.
Explanation:The most significant conclusion that Gregor Mendel drew from his experiments with pea plants is B) Traits are inherited in discrete units, and are not the results of blending. He proposed this after observing how the traits in peas, such as color and shape, followed specific patterns of inheritance across generations. These 'discrete units' are what we refer today as genes. A key aspect of Mendelian genetics is the concept of dominant and recessive genes. Contrary to option C, recessive genes do not occur more frequently, but rather are masked by the dominant genes in the F1 generation. Mendel's work formed the basis of modern genetics and his principles are still used in genetic studies and are taught in schools worldwide.
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What liver secretion is responsible for the emulsification of lipids in the duodenum?
Bile is responsible for the emulsification of lipids in the duodenum. Fat and lipids are hard modules that are broken down and emulsified by drops of water secreted in order to aid in passing waste through the digestive tract.
You just discovered a new organism while walking through the woods. Upon observation, you begin to determine this creature is a primary consumer. Which of these observation would prove your theory correct? Question 3 options: A. Your new organism feasted on a mushroom, but was then eaten by a hawk. B. Your new organism was eating the remains of a deceased bird. C. Your new organism at a succulent mouse who was nibbling on some grass. D. Your new organism was rooted in the ground and its petals point towards the sunlight.
Answer: C. Your new organism at a succulent mouse who was nibbling on some grass.
A food chain can be defined as a linear sequence in which one organism is consumed by another organism so as to sustain it's life. A primary consumer can be defined as the organism which is typically a herbivore which feeds upon the primary producers like plants and other autotrophs.
According to the situation given, a succulent mouse can be considered as primary consumer who was nibbling on some grass.
All the complex feeding relationships among a number of different organisms make up the _____.
food chain
ecosystem
food web
Answer: Food web
Explanation: The complex relationship based on the feeding habits of animals is known as food web.
In this Producers make food by the help of sunlight and the food is consumed by animals. All the animals are interconnected among each other.
There is no hierarchy and it is not unidirectional. One organism can be eaten by one or more than one organism.
A hunter tells his doctor that he's been feeling fatigue, headaches, and dizziness for the past two weeks. upon examination, the doctor notices the man has a red rash on his leg that has a red center surrounded by rings of lighter red. which disease does the doctor suspect?
That would be Lyme Disease
Proteins coded for by nuclear dna but found within mitochondria move from the cytoplasm into mitochondria using _____.
Nuclear DNA codes for proteins that are found within the mitochondria. This is done through the formation of mRNA, which carries the genetic code for the protein into the cytoplasm. The proteins are then translated and moved to their required locations, including the mitochondria, by the endomembrane system.
Explanation:The proteins coded for by nuclear DNA but found within mitochondria move from the cytoplasm into the mitochondria using a specific process that involves the endomembrane system and translation of RNA. The nuclear DNA is first transcribed to form messenger RNA (mRNA) within the nucleus. This mRNA then exits the nucleus, carrying the genetic code for the needed protein into the cytoplasm, where it is translated by ribosomes into proteins.
These proteins then move to their required locations, including the mitochondria if necessary. The movement is facilitated by the endomembrane system, which includes structures like the endoplasmic reticulum (ER) and Golgi apparatus. These structures help in processing, modifying, and shipping the proteins to their destined locations.
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Trisomy 21, also known as Down syndrome, is an example of a disease that results from __________.
A.telophase
B. nondisjunction
C.independent assortment
D. crossing-over
B. nondisjunction
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the best answer u got here is B. nongisjunction
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External fertilization occurs mostly in _____.
A.) aquatic animals
B.) insects
C.) animals that reproduce asexually
D.) land animals
E.) mammals
A) Aquatic Animals
That should help you hope I helped
Table salt is the result of a(n) _____. covalent bond ionic bond hydrogen bond
Answer:
Ionic
Explanation:
Answer:
ionic bond
Explanation:
Table salt is also known as common salt with chemical formula NaCl. In this chemical compound the Na represents element sodium while Cl represents element chlorine. Both of these elements are bonded with each other with the help of ionic bond.
An ionic bond is formed when one atom looses its electron to form an ion with positive charge and another atom gains this electron and forms negatively charged ion. Since opposites attract, these two ions interact with each other to form a bond thereby achieving stability.
For example:
Na⁺ + Cl⁻ → NaCl
Here, an electron is being transferred from Na⁺ which is received by Cl⁻ thereby leading to the formation of ionic bond between sodium and chloride ion.
Women who become pregnant during __________ are more likely to have premature deliveries. menopause midlife adolescence illness
menopause - hope this helps!!
A land form characterized by high elevation and a more or less level surface is called a
Answer: plateau.
Explanation:
Axon diameter and degree of myelination determine nerve impulse conduction velocity.
True or False?
It is true, the bigger the diameter the slower the velocity of the impulse and myelin sheet helps the impulse travel in one direction.
Which one of the following accurately describes the Lac operon? A. RNA polymerase is prevented from transcribing the lac genes when lactose is present. B. The repressor protein binds to the operator when lactose is present. C. The repressor is freed from the operator when lactose is present. D. RNA polymerase transcribes the lac genes when lactose isn't present
The correct answer is: C. The repressor is freed from the operator when lactose is present
The lac operon is found in bacteria (E. coli) and it contains genes involved in lactose metabolism which are expressed only when lactose is present and glucose is absent. Lac operon is regulated and can be turned on and off thanks to regulators: lac repressor and catabolite activator protein (CAP).
The lac repressor blocks transcription of the operon when there is no lactose (it binds to operator so RNA polymerase cannot bind to the promoter). When lactose is present, (repressor is a lactose sensor), the repressor is freed from the operator.
CAP, on the other hand, acts as a glucose sensor- activates transcription when glucose levels are low.