A promoter is a segment of DNA that is upstream of a gene and marks the beginning of transcription.
What is DNA?DNA stands for deoxyribonucleic acid. It is defined as a sophisticated molecule that carries all the data required to create and maintain a creature.
Repressor: a transcription factor that binds to the operator of a gene to block the creation of mRNA. Insulator: a component that obstructs the signal between enhancers and promoters. A gene that affects transcription to promote or inhibit the expression of one or more genes Regulational gene. A tiny chemical that stimulates transcription by preventing repressor protein activity. A small segment of DNA close to the promoter region called the inducer is identified by the repressor protein.
Thus, a promoter is a segment of DNA that is upstream of a gene and marks the beginning of transcription.
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sustainable development must be considered during the developmental activities justify this statement
What is the process in which an mrna molecule is used to synthesize a specific polypeptide on a ribosome?.
The process in which an m-RNA molecule is used to synthesize a specific polypeptide on a ribosome is called translation.
m-RNA stands for messenger RNA. It is the main coding enzyme that encodes the information from the DNA sequence to be translated to the protein. It is transcribed from the DNA with the help of enzyme RNA Polymerase II in eukaryotic cells.
Ribosome is a nucleoprotein. It is the main machinery for the synthesis of protein. The ribosome is composed of two subunits: a small subunit and a large subunit. There are two types of ribosomes: 70 S type and 80 S type.
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Explain how a change in breathing rate is a homeostatic mechanism for a person at a higher
altitude.
An increased breathing rate takes in more oxygen to the lungs and bloodstream to maintain oxygen levels.
Which of the following compounds can be classified as a proteins?
what is microbial antagonism?
Microbial antagonism is the competition between microbial organisms for food assets and territory. As a result, if one organism out competes the other, this leads to the inhibition of the organism that failed to thrive in the surroundings.
Microbial antagonists have an indirect advantageous effect on plant life due to the fact they lessen the pressure from soil borne pathogens on the crop vegetation. however there is also a brilliant quantity of microorganisms inside the soil, that have a right away high-quality impact on plant increase and health (Somers et al., 2004).
Microbial antagonism continues ordinary microbiota from colonizing a few parts of the human body. Microbial antagonism takes place whilst members of the regular microbiota prevent pathogens from colonizing and turning into mounted within the frame.
Antagonism, in ecology, an affiliation among organisms in which one benefits at the expense of the opposite. As existence has evolved, herbal choice has favoured organisms which can be capable of correctly extract electricity and nutrients from their surroundings.
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a(n) cell contains two sets of chromosomes, one set of chromosomes inherited from each parent. multiple choice question.
A diploid cell contains two sets of chromosomes, one set of chromosomes inherited from each parent.
A diploid cell contains two full sets of chromosomes. With 23 chromosomal pairs totaling 46 chromosomes, diploid human cells predominate. 22 pairs of autosomes and a pair of sex chromosomes make up this.
Chromosomes are arranged in homologous pairs in diploid cells. The term "diploid chromosomal number" refers to how many chromosomes are present in a cell as a whole (2n). In a diploid human cell, there are 46 chromosomes altogether since in this case, 2n = 46.
The DNA from both of the organism's parents makes up the homologous chromosomal pairs; the mother and father each contribute one chromosome to each pair.
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A parallel circuit ha a 12V power pack. It ha 2 branche each with a light bulb on. What i the potential difference of each of the light bulb?
The potential difference between each of the light bulbs will be 6.
According to ohms law,
V=IR
V=12v
R=2 (2 branches draw current so they serve as resistance)
I=V/R
=12/2
=6 A
This current will serve as the voltage difference between each light bulb.
The potential difference may be a degree of the sum of vitality exchanged between two points in a circuit. Potential contrast is additionally known as voltage and is measured in volts (V).
The potential difference over a component is measured by employing a voltmeter set in parallel with the component. Voltage, moreover, known as electric weight, electric pressure, or (electric) potential contrast, is the distinction in electric potential between two focuses.
In an inactive electric field, it compares to the work required per unit of charge to move a test charge between the two focuses.
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A life cycle in which the only multicellular form is haploid is most typical of __________.
A life cycle in which the only multicellular form is haploid is most typical of fungi.
In the lifecycle process of fungi, the haploid stage of lifecycle is known to be multicellular and it is te dominant stage.
As a result of the haploid multicellular stage, specialized cells that are also haploid are made.
The process through which these haploid cells will be made is mitosis as for meiosis sexual process has to take place.
After mitosis, the specialized haploid cells that were produced are fused so that a diploid zygote can be formed which will grow into a new fungus.
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perspective that our genes and environmental influences work together to determine our characteristics
Environmental factors often influence traits independently of genes. Either of these effects can change the proteins that are made from a gene, which in turn affects traits.
How do environment and gene determine our personality?
Some genes increase the characteristic and others work to decrease the same characteristic-complex relationship among the various genes, as well as a variety of random factors, produce the final outcome.
Because of their genetic makeup, individuals differ in their responsiveness to the qualities of the environment. There are unique, genetically influenced reactions to particular experiences to which we are exposed.
The presence of drugs and chemicals in an organism's environment can also influence gene expression in the organism. The environment can affect morphological and physiological development whereas genes influence morphology and physiology, creating a framework within which the environment acts to shape the behavior of an individual.
Hence in this way, genes and environmental influences work together to determine our characteristics.
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compared with cells that are surrounded by a lipid membrane, viruses . . . choose one:a. may be surrounded by a membrane synthesized by viral proteins.b. may be surrounded by a membrane derived from the host cell.c. are also always surrounded by a lipid membrane.d. are never surrounded by a lipid membrane.
Not even all viruses have an envelope-like membrane surrounding the capsid. Viruses do have a wall outside of the capsid, but it originates from the host.
What do viruses possess?
A virus's outer layer is formed of a nutrient coat that serves as the nucleus of its mitochondrial Genome, either RNA or Genetic material. The second spikey coat of the mailbox is occasionally seen around the virus. Viruses are able to attach to and enter new hosts.
How do viruses become made?
It's probable that mobile genetic elements that had the ability to move between cells gave rise to viruses. They might be related to organisms that were once free-living but later switched to a parasitic mode of reproduction. It's possible that viruses existed before cellular life developed and helped to shape it.
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The trend for women to delay childbirth until their late 20s or early 30s has ___________ while the peak years for female fertility are ____________.
While the peak years for female fertility are declining, the trend for women to put off having children until their late 20s or early 30s has a high fertility rate.
Is childbirth more difficult in your 30s?After you reach your mid-30s, pregnancy is something to think about more. Women who are older have a higher risk of miscarriage or stillbirth. They are more likely to experience preeclampsia, gestational diabetes, and to give birth to a very little child.
When do women start having children?The prime reproductive years for women are from their late teens to late 20s. Age 30 marks the onset of a reduction in fertility (the capacity to become pregnant). Once you're in your mid-30s, this drop accelerates.
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The nervous tissue outside of the central nervous system composes the ________ nervous system.
The nervous tissue outside of the central nervous system composes the peripheral nervous system.
Nervous tissues are the tissues found in the brain, spinal cord and also the nerves. There are two main types of cells in the nervous tissue: nerve cells and glial cells. Their function is to regulate all the body functions by the receiving and transmission of signals.
Peripheral nervous system is a type of nervous system which is further subdivided into: autonomic nervous system and somatic nervous system. The components of peripheral nervous system are the nerves that branch off from the spinal cord and extends to the whole body.
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In an experiment, you test whether the number of times you rub a cloth against a balloon changes how long it will stick against the wall. You start by rubbing the balloon 10 times with the cloth and stick it to the wall. You repeat this three times and record your results in a table.
Observation
Number of Times Balloon is Rubbed by Cloth Trial #1 Trial #2 Trial #3
10 6 seconds 20 seconds 20 seconds
What statement best reflects why you should do repeated trials in an experiment?
Rubbing the balloon against a cloth 10 times produces very different results each time it is repeated.
The first trial is right because it is done with new materials that give the best results.
The second and third trials were wrong because they were very different from the first trial.
You would make a wrong conclusion if it were based on the first trial in the experiment.
The statement that best reflects why you should do repeated trials in an experiment is:
You would make a wrong conclusion if it were based on the first trial in the experiment; option D.
What are experiments?Experiments are tests or procedures performed to test a given hypothesis or theory about a given observation.
In performing experiments, the procedure usually involves the repetition of steps in the reaction.
Repetition is necessary in order to remove bias in measurements and to lower sampling and random error.
The steps in conducting experiments include the following:
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What happens when human DNA is inserted into a bacterial plasmid?
Answer:
creates a so-called recombinant plasmid
Researchers can insert DNA fragments or genes into a plasmid vector, creating a so-called recombinant plasmid. This plasmid can be introduced into a bacterium by way of a process called transformation. Then, because bacteria divide rapidly, they can be used as factories to copy DNA fragments in large quantities.
What is inserting a human gene into a bacterial plasmid?
Recombinant DNA is a technology scientist developed that made it possible to insert a human gene into the genetic material of a common bacterium.
What is it called when DNA is inserted into a plasmid?
In a typical cloning experiment, researchers first insert a piece of DNA, such as a gene, into a circular piece of DNA called a plasmid. This step uses restriction enzymes and DNA ligase and is called ligation.
Thus, by inserting human DNA into a bacterial plasmid, bacteria divide rapidly and they can be used as factories to copy DNA fragments.
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Drag each tile to the correct location.
Sort the statements based on whether they describe DNA replication in eukaryotes or prokaryotes.
Replication takes place in
the nucleus.
Replication happens at just
one point on the chromosome.
There is only one origin of
replication.
Replication takes place
in the cytoplasm.
Prokaryotes
G
There are multiple origins
of replication.
Replication occurs at multiple
points along the chromosome.
Eukaryotes
The nucleus is where replication occurs in eukaryotes. Replication has several different origins. Along the chromosome, replication takes place several times. Prokaryotes replicate within their cytoplasm. Only one location on a chromosome experiences replication. There is just one origin for replication.
The process of DNA replication, which is managed by the enzyme DNA polymerase, involves the genetic material of a cell—in this case, the DNA—making a perfect copy of itself. In comparison to bacteria, which replicate at a pace of about 500 nucleotides per second, mammals replicate at a rate of about 50 nucleotides per second.
Prokaryotic DNA replication happens through a single origin of replication, whereas eukaryotic DNA replication occurs through numerous replication origins. This is the primary distinction between prokaryotic and eukaryotic DNA replication.
Thus, we can conclude that the location, complexity, and size of the cell have a role in the differences between DNA replication in prokaryotic and eukaryotic cells.
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which statement characterizes commensalism?
a) both organisms are negatively affected.
b) one organism benefits while the other organism experiences harm.
c) one organism benefits while the other organism is not affected.
Answer:
c) one organism benefits while the other organism is not affected.
Proper segregation of plasmids into daughter cells may incorporate which of the following strategies? o Random partitioning due to high copy number
o Polymerization of a filament that binds to, and physically separates plasmids
o Post-segregational killing via toxin / antitoxin system
Random partitioning due to high copy number, Polymerization of a filament that binds to, and physically separates plasmids and Post-segregational killing via toxin/antitoxin system are the ways incorporated to Properly segregate the plasmids into daughter cells.
Plasmids not only replicate, copying across to a daughter cell when a bacterium divides, but they can also pass between unrelated bacteria via mechanisms such as cell-to-cell contact or a 'bridging connection' in a process known as 'conjugation,' which has been described as the bacterial equivalent of sex.
Plasmid purification consists of three basic steps: bacterial culture growth, bacterial harvesting and lysis, and plasmid DNA purification. Low-copy number plasmids require a segregation mechanism to ensure that one-half of the plasmid copies are distributed to each daughter cell during cell division. This can be accomplished directly by partitioning plasmid copies via a mechanism similar to eukaryotic mitosis.
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2 liters of 2% sucrose solution from 10% concentrated stock solution
In order to get 2 liters of 2% sucrose solution from 10% concentrated solution, 0.4 liters of the stock would be taken and diluted with 1.6 liters of water.
DilutionThe problem here is that of a simple dilution. The dilution principle affirms that the number of moles before and after dilution must be constant.
[tex]m_1v_1[/tex] = [tex]m_2v_2[/tex]
where:
[tex]m_1[/tex] = initial concentration or concentration of the stock solution.
[tex]m_2[/tex] = final concentration or concentration of the diluted solution.
[tex]v_1[/tex] = initial volume or volume of the stock solution to be diluted.
[tex]v_2[/tex] = final volume or volume of the diluted solution
In this case:
[tex]m_1[/tex] = 10%
[tex]m_2[/tex] = 2%
[tex]v_2[/tex] = 2 liters
[tex]v_1[/tex] = [tex]m_2v_2/m_1[/tex]
= 2 x 2/10
= 0.4 liters
Thus, 0.4 liters of the 10% stock solution would be taken and diluted up to the 2 liters mark (by adding 1.6 liters of water) to make a 2% solution.
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what percentage of offspring will have a homozygotes dominate dominant genotype?
0 percent
100 percent
25 percent
50 percent
Answer:
100 percent
Explanation:
Which of the following best describes the genetic material a person receives from each parent?
Is O2 (oxygen gas) a molecule
Is H2O (water) a molecule
Is N2 (nitrogen gas) a molecule
Is CO2 (carbon dioxide gas) a molecule
Is CH4 (methane gas) a molecule
this is 5th grade science btw!
HELP PLEASE!!! Match the correct term with the corresponding definition or description.
AND ANSWER ALL!!!!
The image below has the solution. To read the text, enlarge it.
A student is developing a model of sex cell formation.
X
X
XX
XX
X
t
DI
00
00
Which of the following conclusions can be made from the student's modol of why the dna of the daughter cells is different from the dna of the parent cell?
Answer:
Can you please include the answer choices....
Explanation:
Thanks. I'll answer it tho.
Why is photosynthesis and cellular respiration considered a cycle?
Answer:
Cellular respiration and photosynthesis are considered a cycle because the product (end material) of one reaction serves as the starting material for the other reaction
Explanation:
The starting material for cellular respiration is sugar and water and the products are carbon dioxide and water. Water and carbon dioxide are starting material for photosynthesis.
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what is an index fossil? group of answer choices a marker used to determine the age of a geological layer the ideal specimen of that species that all later descriptions must refer to the type specimen of a species a fossil found in a particular site
An index is a fossil use to categories a stratigraphic layer.
What is index fossil ?Geological periods are identified using index fossils. The term "commonly found, widely distributed fossils that are limited in time span" can be used to describe these fossils. One can estimate the age of a layer if they discover an index fossil in it. The geological eras are identified by using index fossils.
Index fossils are the remains of organisms that lived briefly and widely, leaving behind a large number of fossils. Scientists can match rock layers using index fossils. The age of two rock layers that contain the same index fossil but are located in different locations is similar.Learn more about Index fossil here:
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which of the following would be the first step in biosynthesis of a virus with a - (minus) strand of rna?
a. synthesis of protein from - strand RNA used as a template
b. synthesis of DNA from - strand RNA used as a template
c. synthesis of + stranded RNA from - strand RNA used as a template
d. synthesis of - stranded RNA from - strand RNA used as a template
Answer: Synthesis of double-strand RNA from an RNA template.
Explanation:
During photosynthesis, the energy used to pump protons comes from ___________, whereas in cellular respiration it comes from _____________.
During photosynthesis, the energy used to pump protons comes from ______light_____, whereas in cellular respiration it comes from ______NADH/FADH₂_______.
What are the steps in photosynthesis?The first step in photosynthesis is the absorption of light by chlorophyll bound to chloroplast thylakoid proteins. The absorbed light energy is used to remove electrons from electron donors such as water to form oxygen.The electrons are then transferred to the primary electron acceptor, quinine (Q.). Electrons are further transferred from the primary electron acceptor to the final electron acceptor (usually NADP⁺).Proton transfer from the thylakoid lumen to the stroma via the F₀F₁ complex generates ATP from ADP and Pi.The NADP and ATP produced in steps 2 and 3 provide the energy, and the electrons power the process of reducing the carbon to a six-carbon sugar molecule.The first three steps of photosynthesis, are directly dependent on light energy and are thus, called light reactions, while the reactions in the last step are independent of light and thus are termed dark reactions.
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a farmer performs a cross between two species of flowers and expects a distribution of red, pink, and white flowers. out of flowers, the following numbers of red, pink, and white flowers were observed. calculate the expected number of each type of flower.
Due of the flowers' inability to consistently produce the necessary 1:2:1 ratio of bloom colors, the farmer will be unable to meet demand. There are 250, 500, and 250.
A common flower is what?The most widespread and well-liked flower genus in the world is undoubtedly the rose. There are over least 360 species of flowers in the Rosa genus, which includes these blooms. These blooms naturally occur in a variety of hues, including red, pink, apricot, and white.
What kind of flower is lovely?Rose. The rose is known as the "queen of the garden" since it is thought to be the most flower petal in the entire world. It is one of most well-liked flowers on the planet and is available in a variety of hues and sizes. They are also widely distributed around the world.
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What defines a substantial increase in a jellyfish population within a short time?.
As a result of a greater reproductive rate, a jellyfish bloom is described as a significant rise in a jellyfish bloom within a short period of time.
What drives the growth in the number of jellyfish?Because jellyfish can survive with less oxygen than many other marine animals, the rise in their population has been linked to hotter waters and even increasing pollution.
What does it signify when there are many jellyfish present?The recent period of sunny skies and southerly winds may have increased the amount of nutrients in the water, enhancing the conditions for jellyfish repopulation. One aspect that contributes to enormous jellyfish spawning like those is eutrophication, which is the scientific word for an overabundance of nutrients.
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Why are soft-bodied organisms less likely to leave a fossil trace than hard-bodied organisms?.
The soft body parts of the organism are more likely to deteriorate when buried inside the earth and hence they do not leave any fossil trace than the hard-bodied organisms.
Fossils are the remains, traces or impressions of the animals and plants that dies millions of years ago and were buried deep down in the Earth. The fossils provide information about the organisms of those times and also help in establishing the ancestral history of current organisms and their evolution.
Evolution is the change in species that occurs in long periods of time for generations over generations. The term evolution is a population concept because evolution can never be seen in one individual but is visible in a population.
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