In order to develop antibiotics, scientists need to understand how bacteria grow, divide, and spread during an infection. An essential part of bacterial growth is RNA synthesis because RNA must be synthesized before proteins can be assembled. If RNA synthesis is blocked, bacteria will not be able to survive and reproduce.
Which of the following questions will best direct an investigation on how an antibiotic that inhibits RNA synthesis in bacteria can be developed?
A. Which chemical compounds add a hydroxyl (–OH) group to the growing RNA strand?
B. Which proteins are used to undergo cell division through binary fission?
C. Which chemical compounds block the 5’ end of the growing RNA strand?
D. Which chemical compounds block the 3’ end of a growing RNA strand?
Answers
The following questions that will be best direct an investigation on how an antibiotic that inhibits RNA synthesis in bacteria can be developed is option C. Which chemical compounds block the 5’ end of the growing RNA strand?
To develop an antibiotic that inhibits RNA synthesis in bacteria, it would be important to investigate chemical compounds that block the 5’ end of the growing RNA strand. This is because blocking the 5’ end would prevent the addition of nucleotides and halt the elongation of the RNA molecule, effectively inhibiting bacterial growth and reproduction.
RNA synthesis in bacteria begins with the initiation of transcription, where an enzyme called RNA polymerase binds to the promoter region of a gene on the DNA template strand. Once bound, RNA polymerase begins synthesizing RNA by adding nucleotides to the 3’ end of the growing RNA strand. The addition of nucleotides occurs through the formation of phosphodiester bonds between the 3’ hydroxyl group of the previous nucleotide and the 5’ phosphate group of the incoming nucleotide.
By specifically targeting the 5’ end of the growing RNA strand, an antibiotic could potentially disrupt the formation of phosphodiester bonds and block the elongation process. This would prevent the synthesis of essential RNA molecules necessary for protein assembly, ultimately leading to the inhibition of bacterial growth and reproduction.
Therefore , the correct answer is option C. Which chemical compounds block the 5’ end of the growing RNA strand?
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Related Questions
Stem cells are cells that are undifferentiated. This means that stem cells have not yet developed _[blank]_.
protective cell membranes
a nuclear membrane
a full set of DNA
their certain functions
Answers
Answer:
their certain functions
Explanation:
the protective cell membranes are present in the stem cells, so are the nuclear membrane and the full set of DNA, but their certain functions are not yet developed because they are undifferentiated cells
WBC count that can cause turbidity in the cyanmethemoglobin method resulting to falsely high hemoglobin value:_____.
Answers
A very high WBC count can lead to turbidity in the cyanmethemoglobin method resulting in falsely high hemoglobin value.
Cyanmethemoglobin method is a method which is used for the estimation of hemoglobin. In this method, hemoglobin is converted to cyanmethemoglobin by adding ferricyanide and potassium cyanide. The absorbance is then measured at 540nm using a spectrophotometer.
This is a very advantageous method as it is able to measure all forms of hemoglobin except sulphaemoglonin and also since spectrophotometer is used, subjective errors are avoided. But, if the WBC count is very high, it can lead to turbidity in the cyanmethemoglobin method resulting in falsely high hemoglobin value.
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How has pollution of the Huai River basin in China affected the lives of people there? Populations along the river have increased as water resources dwindle.
The people continue to fish from and drink the polluted river water.
The water is too toxic to fish from or live near.
Locals convinced the government to clean up the river.
Answers
Pollution in the Huai River basin has led to health issues, reduced water resources, and impacted fishing and agriculture.
The pollution of the Huai River basin in China has significantly affected the lives of people residing near the river. Contaminated water has led to health problems, including higher rates of cancer and other diseases.
As water resources dwindle, the growing population faces challenges in accessing clean water for daily use. Furthermore, the toxic river water negatively impacts fishing and agriculture, reducing local income and food availability.
In response to these issues, locals have successfully convinced the government to take action and work towards cleaning up the river and improving water quality.
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Answer: the water is too toxic to fish from or live near.
Explanation: i took the test and got my answer wrong so it showed me the correct answer!
it’s for 01.05 energy lab worksheet
Describe the five adjustments you made to the Rube Goldberg device in order to keep the
flow of energy going.
Answers
Answer:
The five adjustments I made to the Rube Goldberg device in order to keep the flow of energy going include
Changing the angle
Putting the rubber band firmly to the white ball
Changing the position of the weight
Attaching the 5lbs to the rope on the third platform found in close proximity to the green tube so it can enter into the see saw device.
Explanation:
agree with guy on top kjgcfvg
The DNA sequence that acts as a switch for turning the lac operon off or on is the __________. A) repressor B) promoter C) operator D) regulatory gene
Answers
The main answer to your question is C) operator.
The operator is a segment of DNA located between the promoter and the structural genes of the lac operon.
The operator serves as a switch that can turn the operon on or off by binding to a repressor protein.
When the repressor protein is bound to the operator, it blocks RNA polymerase from transcribing the structural genes, effectively turning off the operon.
When the repressor protein is not bound to the operator, RNA polymerase can bind to the promoter and transcribe the structural genes, turning on the operon.
In summary, the operator is a key regulatory element that controls the expression of genes in the lac operon.
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what is the set of reactions that cells use to break down larger molecules, release energy, and make ATP?
Answers
Answer:
Cellular respiration.
if the z value of a microorganism is 16.5°c and d121 is 0.35 minute, what is d110?
Answers
The D110 value is the time taken for a population of microorganisms to decrease by a factor of 10 as a result of heating to a specific temperature.
In this case, the specific temperature is 16.5°C. The calculation of the D110 value is based on the Arrhenius equation which states that the rate of a chemical reaction is proportional to the temperature raised to the power of the activation energy divided by the gas constant.
Using the D121 value (0.35 minutes) and the Arrhenius equation, the D110 value can be calculated. First, the temperature difference between 121°C and 110°C is calculated (11°C).
Then, the activation energy is divided by the gas constant to get the rate of reaction. This is then divided by 11°C to get the D110 value.
In conclusion, the D110 value of a microorganism at 16.5°C and with a D121 value of 0.35 minutes is 0.31 minutes.
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Someone plz help me :(
Answers
Answer:
C. The wrecking ball transfers kinetic energy to the wall
The fat rendered from beef carcasses used to make products such as soap and lubricantsa. Trueb. False
Answers
The fat rendered from beef carcasses is known as tallow, and it is used to make a variety of products, such as soap and lubricants.
Tallow is made by "rendering" the fat from beef or mutton, which is a process of heating the fat to remove the impurities and make it suitable for use in a variety of applications.
Tallow is a hard, white or yellowish fat that is used to make soap, candles, lubricants, and cosmetics. It is also used as a source of biofuel. Tallow has been used for centuries as a source of fuel and in the production of candles and soap, but its use has decreased in recent times due to the availability of other, cheaper, and more convenient alternatives.
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1. "I will drop a variety of objects from a height of 10 feet and use a stopwatch to record the time it takes for them to hit the ground." This is an example of an experiment.
Answer:
Answers
Answer:
just look it up man
Explanation:
The white matter of the cerebellum is known as the.
Answers
Answer: Arbor vitae
Explanation:..hi its me back again have a great day and burn it (pls mark me brainliest)
15
Select the correct answer.
Which species is likely to exhibit random dispersion?
OA. rushes that grow on the edges of bodies of water
OB. orchid plants that grow on the branches of a particular tree species
OC. squirrels that actively defend their territory against other squirrels
OD. frogs that live along the edges of ponds and streams
OE.
sweetgum, a tree species with wind-dispersed seeds
Reset
Nath
Answers
Answer:
i think its B
Explanation:
Answer: is E - Sweetgum, a tree species with wind-dispersed seeds.
How might bird population on a mountainside respond to a warning climate?
Answers
The response of bird populations on a mountainside to a warming climate can vary depending on various factors like Shifts in Altitude, Changes in Habitat Availability, Interaction with Other Species, etc.
Here are a few possible ways in which bird populations might respond:
The shift in Altitude: As temperatures increase, bird populations may respond by shifting their distribution to higher elevations, seeking cooler habitats within their preferred temperature range. This movement is often referred to as an "upslope shift" and allows birds to track suitable climate conditions.
Changes in Habitat Availability: Warming temperatures can lead to changes in vegetation patterns and habitat composition. Bird populations may experience changes in the availability of food sources, nesting sites, or suitable breeding areas. Some species may adapt and adjust to new habitat conditions, while others may face challenges in finding suitable resources.
Altered Timing of Migration and Breeding: Warming temperatures can influence the timing of migration and breeding for bird populations. As temperature cues change, birds may alter their timing of migration to align with the peak availability of food resources or adjust their breeding cycles to match optimal environmental conditions.
Interaction with Other Species: Climate change can disrupt the delicate ecological interactions between bird species and their prey, competitors, or symbiotic partners. Changes in the timing of food availability or the arrival of migratory species can have cascading effects on bird populations.
Range Contractions or Expansions: In extreme cases, some bird species may face range contractions if suitable habitat becomes limited due to warming temperatures. Conversely, certain bird species that are better adapted to warmer conditions may experience range expansions into higher latitudes or elevations.
It is important to note that these responses can vary among bird species depending on their ecological traits, adaptability, and ability to disperse and find suitable habitats. Additionally, other factors such as habitat fragmentation, availability of resources, and human impacts can also influence bird populations in a changing climate.
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Most of all cells enzymes are
a. Carbohydrates
b.lipids
c. Amino acids
d. Nucleic acids
e. Proteins
Answers
Most of all cell enzymes are proteins
it is during the stage of prenatal development that the developing organism begins to resemble a human being. a. placental b. germinal c. embryonic d. fetal
Answers
It is during the fetal stage of prenatal development that the developing organism begins to most clearly resemble a human being. So the correct option is d.
During the fetal stage, the body of the fetus is formed, organs and systems begin to develop, and the fetus begins to move around in the womb.
The fetal stage of prenatal development follows the germinal stage, in which the zygote divides into a blastocyst, which then implants into the uterine wall. In the embryonic stage, the body of the fetus begins to take shape and the major organ systems, such as the circulatory, nervous, and skeletal systems, begin to form.
At the onset of the fetal stage, the fetus is about one inch in length and weighs about one ounce. The fetus will grow rapidly during this stage, with the internal organs and external features such as eyes, ears, and fingers becoming more clearly defined. The fetus will also begin to move around in the womb.
During the fetal stage, the fetus will gain weight at an average rate of half an ounce to one ounce per day. As the fetus grows, its skin begins to thin and becomes more transparent.
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How can single-gene inheritance be more complicated than the simple autosomal dominance model?
(short answer response)
Answers
Single-gene inheritance can be more complicated than the simple autosomal dominance model in the following ways:Incomplete Dominance: Incomplete dominance refers to a situation in which one allele is not completely dominant over another.
The result is a third phenotype that blends the dominant and recessive characteristics together, resulting in an intermediate expression. A cross between two parents with pink flowers that represent incomplete dominance results in a ratio of 1:2:1 (red: pink: white). This suggests that a single gene does not determine flower color in this situation.Codominance: Codominance is a form of inheritance in which both alleles are expressed simultaneously in a heterozygote, resulting in both traits being visible. The ABO blood type system is an example of this, where both A and B blood group alleles are present, resulting in AB blood type.
This situation of blood type results in the presence of two different alleles, resulting in the expression of both and the production of a new protein or molecule.Pleiotropy: This type of inheritance occurs when a single gene has an impact on multiple traits, indicating that the impact of a single gene is not limited to a single trait. As a result, some characteristics may appear unrelated and may arise as a result of a single gene mutation. The Marfan syndrome is an example of this, which is caused by a mutation in the FBN1 gene that affects connective tissue in multiple parts of the body.X-Linked Dominance: Some characteristics are determined by genes located on the X chromosome, which can have an impact on both males and females. When a dominant allele is present on the X chromosome, it results in a condition known as X-linked dominance, which is more common in males than females. In this situation, the males appear to be more affected by the condition, while the females are carriers.
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How do cells at the completion of meiosis compare with cells that are in prophase of meiosis I? (A) The cells have half the number of chromosomes and half the amount of DNA. (B) The cells have the same number of chromosomes and half the amount of DNA. (C) The cells have half the number of chromosomes and one-fourth the amount of DNA. (D) The cells have half the amount of cytoplasm and twice the amount of DNA.
Answers
Cells at the completion of meiosis compare with cells that are in prophase of meiosis I is (A) The cells have half the number of chromosomes and half the amount of DNA.
The correct option is (A).
The cells produced at the end of meosis cell division have half the number of chromosomes (termed as Haploid), so they will have half the number of chromosomes but same DNA as that of the parent cell as DNA divides and makes a copy of the parent cell DNA.Meiosis is a form of cell division of germ cells that creates gametes such as sperm or egg cells in sexually reproducing animals. It consists of two rounds of division that result in four cells with just one copy of each chromosome (haploid). Prior to division, genetic material from the paternal and maternal copies of each chromosome is crossed across, resulting in novel code combinations on each chromosome. During fertilisation, the haploid cells generated by meiosis from a male and female will unite to form a zygote, a cell with two copies of each chromosome.To learn more about Meiosis.
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Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. When a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. Is the behavior of the male goose an example of an adaptation? *
Answers
Adaptation refers to how an organism change its behaviors, structure or function in order to be able to cope successfully with a new change in its environment.
The behavior of the male goose is an example of the territorial nature of male geese and their readiness to defend their family anytime they feel threatened. Male geese normally have well defined territory which they defend at all time from other male geese, other animals, humans and their pets. Male geese generally are very protective of their partners and offspring.
Parenteral includes any routes other than the _____.
Answers
Parenteral includes any routes other than the gastrointestinal (GI) route. The choice of route depends on the medication being administered, and the desired outcome.
The GI route involves the administration of medications or nutrients through the mouth, and the drug or nutrient is then absorbed by the digestive system. Parenteral routes, on the other hand, involve administration of medications or nutrients through routes other than the GI tract, such as intravenous (IV), intramuscular (IM), subcutaneous (SC), intradermal (ID), intra-arterial, and intrathecal. Parenteral routes are often used when oral administration is not possible or effective, or when rapid drug delivery is necessary. Intravenous administration provides the most rapid onset of action, while other routes, such as intramuscular and subcutaneous, provide a slower onset of action.
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plzz help
Which describes a promoter?
a. the first part of an operon that regulates where, when, and to what level a gene is
expressed
b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene
c. a cluster of genes that are expressed or repressed as a group
d.an enzyme that helps DNA unzip prior to transcription
Answers
Answer: A
Explanation: email for more help my address is
charlescarey0906(at symbol)g ma il.com
no spaces or caps
Answer:
a :)
Explanation:
Locate the DNA helicase (an enzyme) on Model 2. What do you think is the role of DNA helicase in the replication of DNA?
Answers
Helicase is an enzyme involved in DNA replication, and acts on the origin of replication separating the original strands by breaking hydrogen bonds between bases. It must be located in between the two original strands.
What is the helicase enzyme?Helicase is an enzyme involved in the process of DNA replication through which a DNI molecule duplicates.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The old existing strands are used to synthesize the new complementary strand.
Different enzymes act during replication. Helicase in particular is in charge of breaking nucleotidic hydrogen bonds, unpairing bases, and separating the original double-stranded molecule into two strands at the origin of the replication.
Helicase must be located between the bases of the strands, separating them.
Note: Since I could not find the model, I will attach a file indicating qhere the enzyme must be located.
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what is the general term that describes structures like the corpus callasum
Answers
White matter is the general term which is used to describe the structure corpus callosum.
Corpus callosum, also known as the white matter, performs the function of connecting the cerebral hemispheres. It is a very important structural as well as functional part of the human brain. It helps us in the death perception and also enables the two sides of the brain to communicate with each other.
The name corpus callosum basically means tough body. It is the largest white matter structure present in the brain both in terms of size, which is 700 square millimeters, as well as the number of axonal projections, which are about 200 million, between the two hemispheres.
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he inactivation of cdks by the action of apc/c triggers both anaphase and cytokinesis. group of answer choices true
Answers
The correct answer is true, as a choice. Anaphase and cytokinesis are both triggered by the inactivation of Cdks caused by the activity of APC/C.
A class of versatile enzymes known as CDKs can alter a variety of protein substrates necessary for cell cycle development. Phosphate groups from ATP are specifically transferred by CDKs to certain lengths of amino acids in the substrates to phosphorylate them. A multi-subunit cullin-RING E3 ubiquitin ligase that controls entry into S phase and regulates progression through the mitotic phase of the cell cycle is known as the anaphase promoting complex or cyclosome (APC/C). To promote DNA replication, for example, G 11start subscript, 1, end subscript/S cyclins send Cdks to S phase targets, whereas M cyclins send Cdks to M phase targets (e.g., making the nuclear membrane break down). The APC/C causes the separation of sister chromatids by removing anaphase inhibitory proteins; by eradicating mitotic cyclins, it generates the low CDK state required for cytokinesis and for rebuilding the pre-RCs complexes required for yet another cycle of genome replication.
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The table shows the classification of four mammals found in Texas. Peccary Pronghorn Fallow Deer Elk Animalia Kingdom Animalia Animalia Animalia Phylum Chordata Chordata Chordata Chordata Class Mammalia Mammalia Mammalia Mammalia Artiodactyla Order Artiodactyla Artiodactyla Artiodactyla Family Tayassuidae Cervidae Antilocapridae Cervidae Cervus Antilocapra Cervus Genus Tayassu Species T. tajacu C. elaphus A. americana Based on this table, which explanation best describes why elk and fallow deer are classified in the same genus? They are both in family Cervidae and share a more recent common ancestor. They mate and produce fertile offspring. C. dama They live in similar habitats. They are both in kingdom Animalia and have similar diets.
Answers
The fact that both elk and fallow deer belong to the Cervidae family and have a more recent common ancestor is the greatest justification for why they are included in the same genus.
Evolutionary relationships are the basis for classification, and similar organisms are placed in the same group. Elk and fallow deer have many traits, which is further supported by the fact that they belong to the same genus.
This suggests that they had a recent common ancestor. The other choices are not directly related to their genus categorization.
MammalsOrganisms are categorized in a hierarchical manner using evolutionary relationships. Four Texas-based mammals are categorized in the following table, including their kingdom, phylum, class, order, family, genus, and species. As members of the same genus, elk and fallow deer are more closely related to one another than to the other organisms in the table. This is due to the fact that they have a more recent common ancestor than the creatures in the table or other species share a common ancestor. They belong to the same family (Cervidae) in this instance, making them more closely related to one another than to peccary or pronghorn, which are members of distinct families.
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If a child has blood type ------------ when his mother has blood type a, o for his father?
Answers
If a child has blood type O when his mother has blood type A and his father has blood type O, it is possible but less likely, as the child would have inherited the O allele from both parents.
Blood type inheritance follows specific patterns based on the ABO system. Each person inherits two alleles for blood type, one from each parent. The A allele and the B allele are dominant, while the O allele is recessive. In this case, the mother has blood type A, which means she could have two possible genotypes: AO (heterozygous) or AA (homozygous).
The father has blood type O, which means he has the genotype OO (homozygous). Since the O allele is recessive, the child can only have blood type O if they inherit the O allele from both parents.
If the mother is heterozygous (AO) and the father is homozygous for O (OO), there is a 50% chance of the child inheriting an O allele from the mother and a 100% chance of inheriting an O allele from the father. Thus, the child has a 50% chance of having blood type O.
However, if the mother is homozygous for A (AA) and the father is homozygous for O (OO), it is impossible for the child to have blood type O, as the child would definitely inherit an A allele from the mother.
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What would happen to the beetle population if, over a period of many years, the bark on all the trees becomes spotted?
The population of spotted beetles would increase and the population of plain beetles
would decrease
The population of plain beetles would increase and the population of spotted beetles
would stay the same
The population of plain beetles would increase and the population of spotted beetles
would decrease
The population of spotted beetles would increase and the population of plain beetles
would increase
Answers
Help! What is the supply chain?
Answers
Answer:
A and b bro
Explanation:
the small circular molecules of dna commonly found in bacteria are called _______
Answers
The small circular molecules of DNA commonly found in bacteria are called "plasmids."
What are plasmids?
Plasmids are separate from the main bacterial chromosome and can be transferred between bacteria. Restriction enzymes are proteins that can cut DNA at specific sequences, and they are often used in molecular biology to manipulate plasmids for various purposes, such as cloning or gene editing.
Role of plasmids:
The small circular molecules of DNA commonly found in bacteria are called plasmids. These plasmids can be cut by restriction enzymes, which are enzymes that recognize specific DNA sequences and cut the DNA at those sites. This ability to manipulate plasmids with restriction enzymes has made them an important tool in genetic engineering and biotechnology.
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What is a tide?
A.an extreme pull from the gasity of the Sun
B.something that happens to the ocean every two days
C.a cyclical pattern of temperatures in seas and oceans
D. a continua rise and fall of water in seas and oceans
Answers
Answer:
D. a continuous rise and fall of water in season oceans
a monoclonal antibody binds to g‑actin but not to f‑actin. what does this tell you about the epitope recognized by the antibody?
Answers
The epitope recognized by the monoclonal antibody is specific to g-actin and not present on f-actin. This suggests that the antibody recognizes a unique structural feature or conformational difference between g-actin and f-actin.
A monoclonal antibody binds to g‑actin but not to f‑actin. An epitope, also known as an antigenic determinant, is a specific portion of a antigen molecule that is recognized and specifically bound by an antibody or T cell receptor. The epitope can be a linear sequence of amino acids or a three-dimensional structure on a protein or other large molecule. The recognition of epitopes is a crucial step in the immune response, as it allows the immune system to specifically target and neutralize pathogens or foreign substances. by this we can see that the antibody recognizes a unique structural feature or conformational difference between g-actin and f-actin.
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