Transcriptional regulation:A) Is highly efficient at completely preventing transcription.B) Allows the cell to only produce proteins that are needed at the time.C) Can be induced by a repressor protein.D) All of these.E) None of these
Answers
B.) Allows the cell to only produce proteins that are needed at the time. Transcriptional regulation is a crucial biological mechanism that enables the cell or organism to respond to a range of intra- and extracellular inputs.
To determine cell identity throughout development, to maintain it throughout its lifetime, and to coordinate cellular activity.
The process by which a cell controls the transcription the process of turning DNA into RNA and so coordinates the activation of genes is known as transcriptional regulation. The amount of RNA copies that are produced or the timing of when the gene is transcribed are only two examples of the many ways that a single gene can be controlled. This regulation enables the cell or organism to respond to various intracellular and external signals and elicit a response.
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Related Questions
Do you think people use energy before modern times why or why not
Answers
Answer:
Yes
Explanation:
Before the modern times, energy consumption was vital in order to survive. For example, you need heat (thermal energy) to cook food and also be in a decent state of temperature for your body. If they had be never used energy, the generations wouldn't go on. Energy is our main source of living. Solar energy provides sunlight to plants so they can be grown healthily to provide nutritious fruits and vegetables.
To conclude, yes, people did use energy before the modern times otherwise, they would've not survived.
Before the manufacturing revolution, our energy demands were mediocre. For heat, we relied on the sun. Whenever the sun disappointed us, we scorched wood, hay, and withered dung. Our society's energy use changed forever, even with the low-cost automobile and the expanse of electricity. Energy usage increased rapidly, doubling every decade. The price of energy production was decreasing unwaveringly, and the efficient use of energy was not a concern. Drivers lined up at gasoline stations to purchase gas, and President Jimmy Carter went on television to announce that energy preservation was "the moral equivalent of war." New factory orders had already stopped because of multibillion-dollar price overruns, soaring-high inflation, and a slowdown in electricity demand growth due to the early effects of energy preservation. So I think people used energy before modern times.
Hi, which of the following is true about Adaptions?
1. Adaptions help organisms attract more predators.
2. Adaptions do not help organisms in any way.
3. Adaptations help the organism survive in their environment.
I would really appreciate it, thanks so much!
Answers
our sequence is 5' - cttataaagccgtacaaaatctttctagcgcaaaa - 3'. for simplicity sake, only consider the 5' to 3' direction. consider the underlined c. would a change to a g result in a change in gene expression?
Answers
No, a change to a G would not result in a change in gene expression as the underlined C is a non-coding nucleotide and does not have any effect on gene expression.
Non-coding DNA corresponds to the portion of an organism's genome that does not code for amino acids, the building blocks of proteins. Some noncoding DNA sequences are known to play functional roles such as regulation of gene expression, whereas other regions of noncoding DNA have no known function. Other regions of non-coding DNA are important for protein assembly. By altering one of these regions, a variant (also known as a mutation) in the noncoding DNA can turn on the gene, causing the protein to be produced in the wrong place or at the wrong time. There are two types of SNPs in the coding region.Synonymous and non-synonymous SNPs. Synonymous SNPs do not affect the protein sequence, whereas non-synonymous SNPs change the amino acid sequence of the protein.
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a population of fungus have either balloon or flat shaped mushrooms. 5 years ago, the population had 250 individuals with 220 balloon alleles in the gene pool. now this same population has 400 individual mushrooms with 448 flat mushroom alleles in the gene pool. what is the current observed frequency of balloon alleles and did the population evolve? question 10 options: 0.44; yes 0.44; no 0.56; yes 0.56; no 0.88; yes 0.88; no
Answers
The current observed frequency of balloon alleles in the population is 0.44, and the population has evolved. The correct option is A.
To determine the current observed frequency of balloon alleles, we need to calculate the proportion of balloon alleles in the gene pool.
Let's start with the initial population 5 years ago. The total number of alleles in the gene pool can be calculated by multiplying the number of individuals by 2 (since each individual has two alleles). Therefore, the initial gene pool size was 250 individuals × 2 alleles/individual = 500 alleles.
In the initial gene pool, there were 220 balloon alleles. To find the initial frequency of balloon alleles, we divide the number of balloon alleles by the total number of alleles: 220 balloon alleles / 500 total alleles = 0.44.
Now let's consider the current population. We are given that there are 400 individuals in the population and 448 flat mushroom alleles in the gene pool. Following the same calculation as above, the total number of alleles in the current gene pool is 400 individuals × 2 alleles/individual = 800 alleles.
To find the current frequency of balloon alleles, we subtract the frequency of flat mushroom alleles from 1 (since there are only two types of alleles in the gene pool): 1 - (448 flat mushroom alleles / 800 total alleles) = 1 - 0.56 = 0.44.
The current observed frequency of balloon alleles is 0.44, which matches the frequency we calculated for the initial population. Since the frequency of balloon alleles has remained constant over time, we can conclude that the population has not evolved. Option A is the correct one.
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A person without the allele for sickle cell anemia has children with a person who is a carrier for sickle cell anemia but doesn’t have the disease. What percentage of their children will have sickle cell anemia? What percentage of their children will be carriers for sickle cell anemia? Show your work with a Punnett square. Plese help!!!!
Answers
If one parent has sickle cell trait (HbAS) and the other does not carry the sickle haemoglobin at all (HbAA) then none of the children will have sickle cell anaemia. There is a one in two (50%) chance that any given child will get one copy of the HbS gene and therefore have the sickle cell trait.
what is sickle cell anemia ?Sickle cell anemia is a type of hereditary disease provides less oxygen to cells due to a change in the shape of red blood cells, so that it fails to carry oxygen to cells.
The effected or mutated part is the beta gene which is generally makes hemoglobin but due to the mutation in the amino acid, the protein formed is defected and fails to perform its normal function.
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Tonicity scenario biology
Answers
In the given scenario, the solution's Tonicity scenarios (6,9,13,14) are Hypertonic, (7,15) are Isotonic, and (8,10,11,12) are Hypotonic.
What are Hypertonic, Hypotonic, and Isotonic solutions?The concentration of a solution in relation to another solution is referred to as tonicity. The quantity of solutes dissolved in a solution is referred to as concentration.If the solute concentration is lower than that of another solution the solution is Hypotonic. Water molecules leave the cell from the outside in this solution.If the solute concentration is higher than that of another solution then the solution is Hypertonic. So, water molecules enter the cell from the outside in this solution.Isotonic solution is the one that has the same solute concentration as another solution.In a hypotonic solution, cells will expand, whereas, in a hypertonic one, they will shrink.6. Hypertonic
7. Isotonic
8. Hypotonic
9. Hypertonic
10. Hypotonic
11. Hypotonic
12. Hypotonic
13. Hypertonic
14. Hypertonic
15. Isotonic
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Stakes have been set 50 feet apart. There is a 1 foot rise from stake 1 to stake 2 Determine the percent slope. Is it nearly level, gently sloping, sloping, or is it moderately steep?
Answers
Answer: I'd say Gently sloping, if not then nearly level cause the slope is 2%
Explanation: rise over run times 100= percentage slope
Two species that occasionally mate and produce zygotes, but that have incompatible genes that prevent the resulting embryo from developing, are affected by:________
Answers
Two species that mate and produce zygotes, but that have incompatible genes that prevent the resulting embryo are affected by Reduced Hybrid Viability.
What is Reduced Hybrid Viability?Reduced Hybrid Viability is a biological phenomenon that occurs when two different species are able to mate and produce descendence but offspring have fertility problems.
In conclusion, two species that occasionally mate and produce zygotes, but that have incompatible genes that prevent the resulting embryo from developing, are affected by Reduced Hybrid Viability.
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Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Turner syndrome occurs when a female has an incomplete set of sex chromosomes. Symptoms of Turner syndrome include swollen hands and feet, short stature, and infertility. Which type of chromosomal mutation is responsible for causing Turner syndrome?
polyploidy
tetraploidy
aneuploidy
trisomy
Answers
The type of chromosomal mutation responsible for causing Turner syndrome is aneuploidy.
Turner syndrome is caused by the partial or complete absence of one X chromosome. This is called monosomy and is typically caused by chromosomal nondisjunction. Nondisjunction occurs when chromosomes fail to separate properly during cell division.
Therefore, the type of chromosomal mutation responsible for causing Turner syndrome is aneuploidy which is a type of chromosomal mutation that involves an abnormal number of chromosomes.
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Nearly all of the energy that Earth receives from the Sun is used in photosynthesis.
Please select the best answer from the choices provided:
TRUE
FLASE
Answers
arrange the order of events for the internalization of ldl particles into cells: ldl, made up of combination of cholesterol and apolipoprotein, binds to ldl receptors and becomes internalized as endocytotic vesicles. the environment of the endosome becomes acidic, which causes the ldl to dissociate from its receptor; additionally, the endosome fuses with a lysosome. several endocytotic vesicles fuse to form an endosome. the ldl particle is degraded by the lysosome. ldl receptors migrate to the cell surface and cluster in clathrin-coated pits. view available hint(s)for part a arrange the order of events for the internalization of ldl particles into cells: ldl, made up of combination of cholesterol and apolipoprotein, binds to ldl receptors and becomes internalized as endocytotic vesicles. the environment of the endosome becomes acidic, which causes the ldl to dissociate from its receptor; additionally, the endosome fuses with a lysosome. several endocytotic vesicles fuse to form an endosome. the ldl particle is degraded by the lysosome. ldl receptors migrate to the cell surface and cluster in clathrin-coated pits. 5-1-3-2-4 5-2-3-1-4 5-4-1-3-2 1-5-3-2-4
Answers
The correct order of events for internalization of LDL into cells is
5 - 1 - 3 - 2 - 4
To know the order of the process, read this following explanation.
How cells take up the LDL?Despite having a bad reputation as a high-risk factor for cardiovascular disease, cholesterol is an essential component. It is an integral part of cell membrane, also serves as a precursor of bile, Vit D and steroid hormones.
Cholesterol, together with other lipids, is transported in blood plasma within large particles known as lipoprotein which is an assembly of lipids and protein. Lipoprotein are classified based on their density, one of them is low density lipoprotein (LDL).
LDL carries cholesterol from the liver to other tissues. Peripheral cells take up LDL by endocytosis using LDL receptors. The process how cells take up LDL is described as follows :
LDL receptors migrate to the cells surface and cluster in Clathrin-coated pits.LDL binds to LDL receptors at the plasma membrane and the complex assembly in a coated pit.The internalized pit is converted into Clathrin-coated vesicle that fuses with endosomes after the Clathrin coat is removed. The LDL dissociates from its receptor in the acidic environment of the endosomes and degraded in lysosomes.Learn more about LDL internalization by clicking this link https://brainly.com/question/13650088
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Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?
Answers
Answer: it is nitrous oxide
The greenhouse gas, such as hydrofluorocarbon, that is emitted from commercial air conditioners and refrigerators. These greenhouse gases increase the earth temperature.
What is a greenhouse gas?
Greenhouse gases are the major reason for global warming. Gases such as carbon dioxide, hydrofluorocarbon, and water vapor are the major greenhouse gases. These gases, when present in large amounts, raise the temperature of the earth.
Short radiation enters the Earth but returns as longer radiation. When these greenhouse gases are present in abundance, they don't let the radiation pass. As a result of this radiation, the earth's temperature increases. Due to this, the ice in the polar regions melts, the water level rises, and animals and plants can't do their cellular activities properly.
There are many other effects that can be seen, such as air pollution, natural calamities, less production of foods as agricultural land goes sterile, etc. These greenhouse gases are derived from many man-made things, such as refrigerators, air conditioners, vehicles, etc.
Hence, greenhouse gases such as hydrofluorocarbons are emitted from commercial air conditioners and refrigerators.
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which type of pollen cause pollen allergies?
Answers
Answer:
Pollen from grass, weeds, and trees are common to cause hay fever (allergic rhinitis).
There are three main types of pollen that cause allergies
Tree pollen Grass pollen Weed pollenIt happens when the immune system begins to produce chemicals including histamine to fight against the pollen. This is known as an allergic reaction, and the specific type of pollen that causes it is known as an allergen. The allergic reaction leads to numerous irritating symptoms:
SneezingStuffy noseWatery eyesWhat does the presence of gill slits in a human embryo suggest?
Answers
Answer:
The presence of the gill slits suggests that a long time ago humans and fish shared a common ancestor. The similarities between embryos suggest that these animals are related and have common ancestors.
Explanation:
The active site of an enzyme Group of answer choices lasts only long enough to catalyze only one reaction. changes to conform to the substrate. is the part that binds to the substrate. is compatible with many different substrates, depending on the situation. is the part that is permanently altered by the reaction.
Answers
The active site of an enzyme is the specific region where the substrate binds, and where the catalysis occurs.
An enzyme is a biomolecule responsible for the acceleration of chemical reactions. The enzyme works on a substrate, which is a molecule upon which an enzyme acts.
The active site of an enzyme is the specific region where the substrate binds, and where the catalysis occurs. The active site is created when the enzyme folds into a three-dimensional structure. This site is not permanently altered by the reaction and it lasts long enough to catalyze only one reaction.
The active site is created when the enzyme folds into a three-dimensional structure. The site is not permanently altered by the reaction and it lasts long enough to catalyze only one reaction. The active site of an enzyme is the part that binds to the substrate.
In conclusion, the active site of an enzyme is the part that binds to the substrate.
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How do female-specific needs in the marketplace push
innovation by women entrepreneurs?
Answers
The female-specific needs in the marketplace push innovation by women entrepreneurs by inspiring them to create products or services that meet those needs.
Women entrepreneurs recognize that female consumers may have unique requirements, and they want to provide solutions that cater to those needs. Therefore, they come up with innovative ideas and create businesses that offer products or services that solve these problems. They work towards creating innovative solutions for women.
The female-specific needs that women entrepreneurs address may include products that cater to female hygiene, safety, or beauty. For instance, women’s clothing and shoes should be comfortable and suitable for various activities. Women need to feel secure while engaging in outdoor activities, such as running or hiking. Female-specific needs can also include products that cater to pregnant women, such as prenatal vitamins or nursing bras.
In conclusion, female-specific needs in the marketplace push innovation by women entrepreneurs by inspiring them to create products or services that meet those needs. They recognize that female consumers may have unique requirements, and they want to provide solutions that cater to those needs.
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Phylogeny is the type of classification that names and identifies different organisms primarily by their: A. Physical similarities B. Similarity to humans C. Physical differences D. Evolutionary relationships
Answers
Answer:
D. Evolutionary relationships
Explanation:
phylogeny describes the relationships of organisms which evolved on most closely related species
Phylogeny is the type of classification that names and identifies different organisms primarily by their evolutionary relationship. The correct option is D.
What is phylogeny?Phylogenetics is the analysis of the evolutionary history and interactions between or within organism groups in biology.
Phylogenetic inference methods that concentrate on observed heritable traits, including such DNA sequences, protein amino acid sequences, or morphology, are used to determine these relationships.
Thus, the correct option is D.
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A sample of wood contains 3.125 of its original carbon-14 what is the estimated age of this sample
Answers
A sample of wood contains 3.125 of its original carbon-14, the estimated age of this sample is approximately 18170.37 years.
The estimated age of the sample of wood can be found by using the formula for radioactive decay, which is A = A0 * (1/2)^(t/h), where A is the final amount, A0 is the initial amount, t is the time elapsed, and h is the half-life of the substance. In this case, we know that A = 3.125, A0 = 1 (since we are looking at the fraction of the original amount), and h = 5730 (the half-life of carbon-14). We can plug these values into the formula and solve for t:
3.125 = 1 * (1/2)^(t/5730)
3.125 = (1/2)^(t/5730)
log(3.125) = (t/5730) * log(1/2)
t = (5730 * log(3.125)) / log(1/2)
t = 18170.37 years
Therefore, the estimated age of the sample of wood is approximately 18170.37 years.
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in regards to the ribs where is the location of the intercostal vessels and nerves. what is the clinical significance of this information
Answers
The intercostal vessels and nerves are located between the ribs. The intercostal veins, arteries, and nerves run through the intercostal space on each side of the thoracic cavity.
There are 11 intercostal spaces (paired), and each space has an intercostal vein, artery, and nerve (VAN). The intercostal VANs are crucial in the transfer of sensory and motor information between the upper limbs, thorax, and abdomen.
The VANs are responsible for transferring sensations such as pain, touch, temperature, and pressure from the thorax, and transferring them to the central nervous system (CNS). The VANs also carry signals that control the muscles in the thoracic wall and aid in respiration and other body movements.
This information has clinical significance since knowledge of the location of intercostal VANs can help medical professionals to correctly diagnose and treat many medical conditions. For instance, patients experiencing pain in their ribs may have intercostal neuralgia, a condition caused by the irritation or inflammation of the intercostal nerves.
Similarly, fractures or breaks in the ribs may cause intercostal VANs damage, leading to difficulties in breathing or problems with body movement. Additionally, the intercostal VANs are vulnerable during many medical procedures such as intercostal nerve blocks, chest tubes, and thoracotomy.
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Which of the following factors would have a negative impact on the survival of a species? a A high level of biodiversity in the organism's ecosystem b Access to multiple sources of fresh water c Barriers restricting access to resources d Reduction in the population of competing species
Answers
Answer: The answer is...
Explanation: I dont know
Which phrase describes the process of succession?
A. One disturbance replacing another disturbance
B. An ecosystem changing from one biome to another biome
C. One community gradually replacing another community
D. A species changing from one niche to another niche
Answers
The expression that describes succession is C. One community gradually replacing another community.
What is succession?Succession is the process of changing a community in an ecosystem to become another community of a different type. These changes generally occur over a long period of time.
Succession occurs due to several factors, one of which is natural disasters that damage ecosystems such as forest fires. After a mass extinction occurs in an ecosystem, a new ecosystem will slowly form which has a different species structure from the previous one.
The succession process can take quite a long time for tens of years to hundreds of years in one go. Succession is divided into two types, namely primary succession and secondary succession.
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Please help me with this
Answers
Answer:
1. Physiological 2. Behavioral 3. Behavioral 4. Structural 5. Physiological 6. Physiological 7. Physiological 8. Behavioral
Explanation:
which is NOT part of the cell theory?
A) all living thing a are composed of cells
B) Cells are the building blocks of germs
C) All cells come from other cells
D) Cells are the basic units of structure and function in living things
Answers
Answer:
B.
Explanation: Hope this helps! ^^
Describe at least one part of the experiment procedure you thought was essential for getting good results. Did you find that certain steps in the procedure had to be followed carefully to get consistent results? If you wanted better results, do you think there is a step that could have been added to the procedure? Discuss your thoughts on the overall lab design. Did it help you understand the concepts better, or did it raise more questions? Do you think you could have designed a better experiment? If so, explain how and then discuss it with your classmates. Share some of your knowledge with them to learn a little more about this experiment.
Answers
Answer:
Control environment is the most important procedures for getting good results.
Explanation:
The control environment for an experiment is the essential part for getting good results. In control environment, there is no or less chances of infestation from the external environment which can cause the results of the data more acceptable. So the scientists prefers laboratory for performing experiment as compared to outer environment. So in my opinion for getting better results, the control environment is the most necessary experimental procedure.
Yes, for getting better results I think there is a step that could have been added to the procedure is to follow the international standard procedures for taking the readings by the experimenter.
Answer:
1. Describe at least one part of the experimental procedure that you thought was essential to getting good results. Did you find that certain steps in the procedure had to be followed carefully in order to get consistent results? If you wanted better results, do you think there is a step that could have been added to the procedure?
- Having a controlled environment (like in the Phet lab) is the most important procedure for getting good results.
----------
2. Discuss your thoughts on the overall lab design. Did it help you understand the concepts better, or did it raise more questions? Do you think you could have designed a better experiment? If so, explain how and then discuss it with your classmates. Share some of your knowledge with them or learn a little more about the experiment you just did.
- The overall lab design helped me understand circuits and current so much better. No, the experiment was well-designed and very helpful to my progress through the unit.
Explanation:
a p e x :))
What structures of the knee joint function to separate and align the articular surfaces within the joint capsule
Answers
Answer:
Two menisci
Explanation:
They separate and align the femoral and tibial joint surfaces.
Someone help me define these pls
Answers
Original Horizontality—The Principle of Original Horizontality states that layers of sediment are originally deposited horizontally under the action of gravity. It is a relative dating technique. The principle is important to the analysis of folded and tilted strata.
lateral continuity—The principle of lateral continuity states that layers of sediment initially extend laterally in all directions; in other words, they are laterally continuous. As a result, rocks that are otherwise similar, but are now separated by a valley or other erosional feature, can be assumed to be originally continuous.
Superposition—Superposition is the ability of a quantum system to be in multiple states at the same time until it is measured.
Which event in the Calvin cycle would be the LEAST affected by a malfunction in the electron transport system?
A. synthesis of G3P
B. production of ADP
C. regeneration of RuBP
D. production of 3-PGA
PLease HElp
Answers
Answer:
I think its C
Explanation:
Answer:
The answer is
D. Production of 3-PGA
Explanation:
Took the test
What is a characteristic that helps a living thing survive and
reproduce in a given environment called?
Answers
Answer: An adapation
Explanation:
Give 3 examples of laws and/or government actions that have helped to preserve natural habitats and protect resources. Briefly explain each.
Answers
Three examples of laws and government actions that have helped to preserve natural habitats and protect resources are: The Endangered Species Act (ESA), The Clean Air Act and The National Parks System.
1. Endangered Species Act (ESA): The ESA is a U.S. federal law enacted in 1973, which aims to protect and conserve endangered and threatened species and their habitats. This law prohibits the harm, harassment, or killing of listed species and provides a framework for their recovery.
2. The Clean Air Act: Established in 1963 and amended in 1970 and 1990, the Clean Air Act is a U.S. federal law designed to control air pollution. It sets limits on emissions of harmful pollutants and establishes standards for air quality, thus helping to preserve natural habitats and protect resources by reducing pollution.
3. The National Parks System: Created in 1916, the National Park Service (NPS) is a U.S. federal agency responsible for managing national parks and monuments. Its mission is to conserve natural and cultural resources for the enjoyment, education, and inspiration of current and future generations. This system has helped protect and preserve important ecosystems and wildlife habitats across the country.
Each of these laws and government actions plays a significant role in preserving natural habitats and protecting resources, ensuring that they are available for future generations to enjoy and benefit from.
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Use the drop-down menus to complete each statement about Steven Businger’s work with volcanoes in Hawaii.
Volcanoes release a hazy smoke called
.
Steven Businger helped develop a
that predicts how this smoke spreads.
To model the smoke conditions, scientists measure the amount of
gas a volcano is spewing.
Answers
Answer: 2 2 3
B B C
vog, computer model, sulfur dioxide
Explanation:
someone's sending a pipe bomb to my house