Answer:
B. They contain slightly different codes for amino acids.
Explanation:
suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg, 3.7 pg , 7.3 pg pg, 7.3 pg pg , or 14.6 pg 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.
Each stage of the cell cycle to the corresponding amount of DNA contained within a cell at that stage are as follows:
1. Prophase - 3.7 pg
2. Metaphase - 7.3 pg
3. Anaphase - 14.6 pg
4. Telophase - 7.3 pg
3.7 pg of DNA are present in each cell during prophase. The number of DNA molecules per cell rises to 7.3 pg during metaphase as the chromosomes line up in the centre of the cell. The amount of DNA in each cell doubles to 14.6 pg during anaphase as the spindle fibres force the sister chromatids apart. As the chromosomes travel to the cell's opposing ends and the cell starts to divide, the DNA content per cell returns to 7.3 pg during telophase.
Deoxyribonucleic acid, or DNA. It is a double-helix molecule made up of two strands that carries genetic material. DNA, which is located in the nucleus of cells, is in charge of replicating and transmitting genetic material. Adenine, guanine, cytosine, and thymine are the four nitrogenous bases that make up this compound. The strands of the double helix are created by pairing these bases with one another in a particular order. The genetic information in a particular DNA sequence is determined by the arrangement of these nucleotides.
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Be able to discuss how all systems rely on the circulatory system with specific examples
Answer:
All systems in the body rely on the circulatory system to transport oxygen, nutrients, and other vital substances throughout the body.
Explanation:
The circulatory system, consisting of the heart, blood vessels, and blood, plays a crucial role in maintaining the health and function of every other system in the body.
For example, the respiratory system relies on the circulatory system to transport oxygen from the lungs to the rest of the body. The digestive system relies on the circulatory system to transport nutrients from the stomach and intestines to the cells and organs that need them.
The circulatory system also plays a vital role in the immune system by transporting white blood cells to the sites of infection or injury. The nervous system relies on the circulatory system to transport oxygen and glucose to the brain, which is essential for cognitive function.
The circulatory system also plays a vital role in the endocrine system by transporting hormones, which are chemical messengers that regulate various bodily functions, to the cells and organs that need them.
Overall, the circulatory system is essential for the health and function of every other system in the body, making it one of the most critical systems in the body.
Please help me finding what amino acid this is and if its nonpolar or polar
The amino acid with R group having hydroxyl group is threonine. it is a polar amino acid and is hydrophilic.
What is amino acid?Proteins are made up of substances called amino acids. Proteins and amino acids are the components of life.
An amino acid called threonine is necessary for the production of proteins. It is a polar, uncharged amino acid because it has a -amino group, a carboxyl group, and a side chain with a hydroxyl group.
One of these essential amino acids, threonine, is needed for the production of proteins. Proteins cannot correctly fold or function without threonine.
Polar and neutral amino acids include glutamine, serine, threonine, tyrosine, and asparagine. They're all hydrophilic.
Cysteine is hydrophobic, non-polar, and neutral. Histidine, lysine, and arginine are hydrophilic, positively charged, polar amino acids.
Thus, the given amino acid is threonine.
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Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers of 92, 94, 95, 96, 97, 98, and 100. Therefore, which of the following can be true? A) The isotopes of molybdenum can have between 50 and 58 protons.
B) Molybdenum atoms can have between 50 and 58 neutrons.
C) The isotopes of molybdenum have between 50 and 58 protons and have different electron configurations.
D) The isotopes of molybdenum have between 50 and 58 neutrons and have different electron configurations.
E) The isotopes of molybdenum have different electron configurations.
The true about molybdenum, it has an atomic number of 42, several common isotopes exist, with mass numbers from 92-100, and molybdenum atoms can have between 50 and 58 neutrons (option A)
Keep in mind that the atomic number is equal to the number of protons.
Molybdenum, with an atomic number of 42, also has 42 protons.
The mass = number of protons + number of neutrons.
So, if the mass number of molybdenum is 92, the eutrons = 92 - 42
= 50.
And if the mass number is 100, the neutron:
= 100 - 42
= 58
As a result, molybdenum atoms can contain between 50 and 58 neutrons.
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An animal virus can cause a ______ viral infection, in which disease symptoms are not produced immediately, but the viral information remains inside the cell.
An animal virus can cause a latent viral infection, in which disease symptoms are not produced immediately, but the viral information remains inside the cell.
Animal-infecting viruses are those that affect animals. All cellular life is infected by viruses. Each animal, plant, fungus, and protist species is infected by a different set of viruses, many of which only affect that species.
There is an informal division among vertebrate viruses into those that primarily affect humans and those that affect other animals. Veterinary virology and medical (or clinical) virology are the two study areas' respective names. The viruses that infect humans have been the subject of the most research, despite not being the first to be found and described
Various viruses can affect any of the body's organs or tissues, causing anything from minor discomfort to potentially fatal illnesses. The ability of humans to contract a plant- or
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5. what is the acceptable macronutrient distribution range for the following (see you text and slides)
The acceptable macronutrient distribution range for the following (see you text and slides) is 15-25% for fat, 7-20% for protein, and 55-70% for carbohydrates of an adult's energy intake.
Macronutrients are nutrients that the body needs in large quantities. There are three types of macronutrients that are important for the body, namely proteins, carbohydrates, and fats. Macronutrients are needed by the body in large quantities to provide energy for activities, the three types of macronutrients provide different amounts of energy.
AMDR or acceptable macronutrient distribution range is a range of intake for certain energy sources that the body needs. AMDR is the percentage of total energy intake that is associated with a reduced risk of chronic disease by administering macronutrients. Here the AMDR for fat is 15-25%, protein is 7-20%, and carbohydrates are 55-70% of an adult's energy intake. A carbohydrate AMDR of 55-70% means that on a 2,000 kilocalorie diet, a person should consume between 225 and 325 grams of carbohydrates daily.
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What are the two most specific levels of taxonomic organization?
Answer:
Organisms are commonly referred to according to the two most specific taxonomic levels: genus and species, which are often Latin. This is called binomial nomenclature.
Explanation:
Which statement accurately compares observations and opinions?
Responses:
Observations are made through the scientific process and opinions are not.
Both are affected by beliefs.
Standards are used in developing opinions, not observations.
Scientists use both in their conclusions.
The statement that accurately compares observations and opinions is A. Observations are made through the scientific process and opinions are not.
What is an Observation?Through our senses, we can learn about the outside world, and we can also record information using tools and instruments from science. An observation is any information gathered during an experiment.
Hence, it can be seen that an opinion, unlike an observation is not done through the scientific method.
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Observations are made through scientific processes and opinions are not. The first option.
Observations vs opinionsObservations represent a step in the scientific process. It is the first step involved in scientific methodology through which information is gathered about the natural world.
Opinions, on the other hand, are subjective statements made without any actual study or observing situations. While observations are made based on what is seen, opinions are made based on what people think.
In other words, observations are made through a scientific process while opinions are not.
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Suppose Spallanzani had put varnish on the wings of bats and found that the flight of bats was impaired, which of the following would be an appropriate conclusion to make?
A. Bats do not use hearing to guide their flight
B. Bats use the sense of touch based on sensitive hairs on the wings in order to guide flight
C. Bats with varnish on their wings don't fly well
D. All of the above
E. B and C are both reasonable conclusions
The appropriate conclusion to make from this experiment is that Bats use the sense of touch based on sensitive hairs on the wings in order to guide flight and Bats with varnish on their wings don't fly well. Correct answer: letter B and C.
This is because Spallanzani found that the bats with varnish on their wings were impaired in their flight, indicating that the sense of touch based on sensitive hairs on the wings is an important factor in the bats' ability to fly.
Sensitive hairs, also known as mechanoreceptors, are specialized cells located on the surface of the skin that are sensitive to mechanical stimuli, such as pressure and vibration. They are found throughout the body, including the fingertips, lips, and outer ear. They are responsible for detecting motion, touch, temperature, and pain. When stimulated, these hairs transmit electrical signals to the brain, which then processes the information and results in a response. Sensitive hairs are important for maintaining balance and coordination, as well as for providing sensory information.
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how would you design an experiment to test how robins capture worms? In addition to describing your experiment using words, help me visualize your experimental design by drawing diagrams and/or pictures of how you would set up the experiment. Be sure to include in your experiment description the following: variable, control group, and experimental group.
Answer:
To test how robins capture worms, the following experiment can be designed:
Variable: the method used by the robins to capture worms
Control Group: a group of robins using their natural method to capture worms
Experimental Group: a group of robins trained to use a new method to capture worms
Experimental Design:
Obtain a group of captive robins
Provide them with a habitat that includes soil, grass, and worms for food
In the control group, allow the robins to capture worms using their natural method
In the experimental group, train the robins to capture worms using a new method, for example, by digging the soil in a particular way or by shaking the soil to make the worms come out
Observe and record the number of worms captured by each group of robins
Compare the results to determine if the new method is more or less effective than the natural method.
Diagram:
Control Group (natural method)
| |
Robins ----> Soil ----> Worms
Experimental Group (new method)
| |
Robins ----> Trained Soil ----> Worms
How many cuts would the restriction enzyme Glu55 make?
an enzyme will average one cut for every 4n base pairs, where n is the length of the recognition site. Therefore, the longer a DNA molecule is, the greater the probability is that it contains one or more restriction sites.
How many cuts would the restriction enzyme Glu55 make?take the length of the genome, and divide by how often an enzyme cuts on average. For example Cori cuts at a 6bp site, the frequency of cutting is 4^6, so it cuts every 4096bp on average, as it's sequence will occur at random every 4096bp.
If a linear DNA molecule is digested with a restriction enzyme at four recognition sites, 4 fragments would be produced. II. If a closed circular DNA molecule is digested with a restriction enzyme at six recognition sites, 6 fragments would be produced.
Restriction enzymes are DNA-cutting enzymes. Each enzyme recognizes one or a few target sequences and cuts DNA at or near those sequences.Many restriction enzymes make staggered cuts, producing ends with single-stranded DNA overhangs. However, some produce blunt ends.DNA ligase is a DNA-joining enzyme. If two pieces of DNA have matching ends, ligase can link them to form a single, unbroken molecule of DNA.In DNA cloning, restriction enzymes and DNA ligase are used to insert genes and other pieces of DNA into plasmids.To learn more about DNA refers to;
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Humans produce sweat as a cooling mechanism to maintain a stable internal temperature. Which of the following best explains how the properties of water contribute to this physiological process?
(A) The high specific heat capacity of water allows the body to absorb a large amount of excess heat energy. (B) The high heat of vaporization of water allows the body to remove excess heat through a phase change of water from liquid to gas. (C) The high surface tension of water contributes to the physical process by which water leaves the body. (D) The high melting temperature of water allows the body to remove excess heat through a phase change of water from solid to liquid.
Humans produce sweat as a cooling mechanism to maintain a stable internal temperature. Water contributes to this physiological process through phase change therefore, option B is the right choice.
The glands that create sweat are located in the dermis, which is the deeper layer of the skin. The underarms, palms, and soles of the feet are the areas of the body that have the highest concentration of sweat glands, although they are found all over the body.
The majority of sweat is made up of water, however, it does have a few salts in it. The regulation of core temperature is the primary role it plays. The surface of the skin will get cooler as the water that is contained in the perspiration evaporates. Sweat serves multiple purposes, one of which is to assist in gripping by gently moistening the palms of the hands.
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Compare and contrast asexual and sexual reproduction. Be sure to include at least two similarities and three differences. Asexual and sexual reproduction have these two things in common : They involve cellular division and they result in production of offspring. These two processes differ by the number of cells needed for the reproduction, the type of cell division involved and the genetic structure of the daughter cells.
Asexual and sexual reproduction are two methods of reproducing and producing offspring. Here are some similarities and differences between the Asexual and sexual reproduction:
Similarities:
Involve cellular division: Both asexual and sexual reproduction involve the division of cells to produce offspring.Result in production of offspring: Both methods result in the production of offspring or progeny.Differences:
Number of cells needed for reproduction: Asexual reproduction requires only one parent cell, while sexual reproduction requires two parent cells.Type of cell division involved: Asexual reproduction involves a process called mitosis, which is a type of cell division that results in daughter cells that are genetically identical to the parent cell. Sexual reproduction involves meiosis, which is a type of cell division that results in genetically diverse daughter cells.Genetic structure of daughter cells: In asexual reproduction, the daughter cells are genetically identical to the parent cell, while in sexual reproduction the daughter cells are genetically diverse due to the exchange of genetic material between the two parent cells.Variation: Asexual reproduction lacks genetic variation, while sexual reproduction generates genetic diversity and variation.You can learn more about offspring production at
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This is the marine science
I don’t understand
And thank you if you help me
A cyclonic storm seems to be a violent and very often destructive storm that occurs when the wind moves in a circular pattern at high speeds.
What cause cyclonic storm?Cyclones have been caused by atmospheric disturbances in the vicinity of a low-pressure area, which are distinguished by rapid and often destructive air circulation. Cyclones are frequently accompanied by violent storms and inclement weather.Tropical storms include hurricanes, typhoons, and cyclones. The only distinction is where they form. Hurricanes form in the tropical Atlantic and the Pacific Ocean's eastern equator. Cyclones form south of the equator, off the coasts of Australia and Madagascar, among other places.A tropical cyclone is a rapidly rotating storm system with a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms causing heavy rain and squalls.To learn more about cyclonic storm refer to :
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Examine the two squirrel populations in the following figure. The populations are separated by a geographic barrier. If after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred?
a. Hybrid offspring of the two populations begin to appear.
b. One species will increase into a population size twice as large as the other species.
c. Polyploidy is creating new species.
d. The two populations are not interbreeding freely.
The two populations are not interbreeding freely to determine if speciation has occurred. In this case, Option D is correct
When two people or other organisms who are genetically closely related mate or breed, it is referred to as inbreeding.
By analogy, the term is used in human reproduction, but it is more frequently used to describe genetic disorders and other effects that may result from the expression of negative or recessive traits caused by incestuous sexual relationships and consanguinity. Animals rarely avoid incest.
Homozygosity, which is brought on by inbreeding, can raise the likelihood that a child will inherit recessive traits.
In severe cases, this typically results in a population's biological fitness, or capacity for survival and reproduction, temporarily declining[5][6] (a condition is known as inbreeding depression.
A person who inherits such negative traits is referred to as being inbred. The suppression of such harmful
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IM ON A QUIZZZ PLEASSE....
Olive oil has a density of 0.91 grams per cm3. If the items in the table are placed in a bowl of olive oil, which will sink?
glass and steel
cardboard and plastic
plastic, glass, and steel
cardboard, plastic, and glass
in the mature central nervous system, glial stem cells with the properties of astrocytes can give rise to......
A) Astrocytes
B) Neurons
C) Oligodendrocytes
D) Astroctyes and oligodendrocytes
E) Astrocytes, oligodendrocytes, and neurons
A) Astrocytes. In the neuroepithelium of the developing central nervous system, a variety of progenitor cell types give rise to astrocytes.
The well-known genetic mechanisms that define the lineage of various neuron subtypes and that of macroglial cells are strikingly comparable. Glial cells primarily support and safeguard neurons (nerve cells), maintain homeostasis, remove waste, and produce myelin. In essence, they take care of the neurons and the surroundings in which they live. Astrocytes are a diverse collection of cells with unique protein expression, morphologies, and functions. However, astrocytes are electrically active cells with significant electrophysiological variability and diversity, unlike neurons, which produce action potentials.
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Cells unit test question 8 9 and 10
Carmen conducted an experiment to determine if listening to different types of music would affect a person’s
pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to
seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and
then after each 30-second interval of music. The pulses were taken again after the music selections were
completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person
listened to different types of music.
1. What is the independent variable from her experiment?
A. the 30 second intervals of listening to music B. the types of music
C. the rate of the pulses D. not listening to music
Answer: The independent variable from Carmen's experiment is B. the types of music.
Explanation:
which of the following is an example of hormone release in response to a humoral stimulus? multiple choice question. your thyroid gland releases thyroid hormones due to increased tsh levels. in an emergency situation, your adrenal gland releases epinephrine into your bloodstream. after eating a candy bar your pancreas releases insulin.
An example of hormone release in response to a humoral stimulus is after eating a candy bar, your pancreas releases insulin, option C.
What is a humoral stimulus?A humoral stimulus refers to a stimulus that is mediated by the presence of a specific molecule in the blood or other body fluid. The molecule, also known as a hormone, triggers a physiological response when it reaches its target cells or tissues. This type of stimulus is a contrast to nervous stimulation, which is mediated by the nervous system.
Examples of humoral stimuli include increased levels of thyrotropin-stimulating hormone (TSH) leading to the release of thyroid hormones, increased levels of glucose in the blood leading to the release of insulin by the pancreas, and increased levels of adrenaline in response to an emergency situation.
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Classify the words or phrases as descriptions or examples of fibrous proteins, globular proteins, or both. Fibrous proteins Globular proteins Both Answer Bank polymers of amino acids intermediate filaments soluble in water function as structural proteins in the cell insoluble in water some function as enzymes structure is somewhat spherical exhibit secondary protein structure hemoglobin structure is rod-like
Answer:
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A diploid cell with 6 chromosomes undergoes Meiosis. Draw all the possible combinations at the Metaphase I plate. What are all the possible combinations of chromosomes in the new gametes (assuming no crossing over)?
During metaphase, two sets of chromosomes line up on the metaphase plate. The combination can be XX, XY, XXY, XYYY, and XXXY.
What are chromosomes?A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code.
The very long, thin DNA fibers in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
They are located inside the nucleus. Different organisms have different numbers of chromosomes. For example, humans have 46 chromosomes in each cell.
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How is global warming changing the sound transmission in the Beaufort lens?
Global warming is causing the melting of sea ice in the Beaufort Sea, which is altering the sound transmission in the region. The reduction in sea ice cover is leading to changes in the acoustics of the ocean, including increased absorption and sound scattering,
What is global warming?Global warming is the gradual warming of the Earth's surface that has been seen since the pre-industrial era (between 1850 and 1900), and is attributed to human activity, particularly the burning of fossil fuels, which raises the levels of heat-trapping greenhouse gases in the atmosphere. This phrase should not be used in place of "climate change."
Global warming occurs primarily in the troposphere, the lowest layer of the atmosphere, which rises between 6 and 11 miles above the surface of the Earth. The majority of Earth's clouds are found in this layer, which is also where most living beings, their habitats, and weather are found.
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Which of the following correctly describes….
Answer:
A control variable isn't the same as a control group. Control variables are held constant or measured throughout a study for both control and experimental groups, while an independent variable varies between control and experimental groups
Control group is the group of individuals that do not receive any new conditions. Control variables are the set of uniform conditions that are provided to everyone to prevent introducing other unknown variables. Statement (B) is correct.
What do you mean by control groups?In a clinical trial, the group that does not receive the new treatment being studied. This group is compared to the group that receives the new treatment, to see if the new treatment works.
The control group is important because it serves as a baseline, enabling researchers to see what sort of impact changes to the independent variable produce and strengthening researchers' ability to draw conclusions from a study.
Control groups are an important aspect of true experimental designs. The presence of control groups allows researchers to confirm that study results are due to the manipulation of independent variables (IVs) rather than extraneous variables.
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(a) describe three types of chemical bonds/interactions found in proteins. for each type, describe its role in determining protein structure.
Three types of chemical bonds/interactions found in proteins. for each type are hydrogen bonds, peptide bonds, and hydrophobic/hydrophilic interactions.
The role in determining protein structure is related to its function.
Protein is a macromolecular compound of amino acids linked by peptides. Thus, proteins are formed by the polymerization of amino acids. There are three types of chemical bonds in proteins, namely the first hydrogen bond is formed from polar molecules and contains hydrogen atoms which are found in the secondary structure of proteins. Both peptide bonds are bonds between amide groups on amino groups and hydroxyl groups on other molecules through a condensation process found in the primary structure of proteins. All three hydrophobic bonds are non-polar/hydrophilic R groups are polar R groups found in tertiary and quaternary structures of proteins.
In general, the function of protein is as a source of energy, to form various enzymes and hormones, to support the immune system. There are four protein structures, namely primary, secondary, tertiary, and quaternary structures, all of which provide different functions to proteins. And the structure of the protein can change due to pH, temperature, and competitive inhibitors that prevent the binding of substrates so that the activity of the enzyme is disrupted due to the changing shape.
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the missing restaurant lab
part two please i need the answers
Part 2
DNA-Typing AnalysisThe blood-typing evidence did not clearly reveal whether the bloodstainsbelonged to the missing victim. So, investigators turned to a newer technique called DNA fingerprintingor DNA typing. The DNA sequence of human genes (DNA that codes for proteins) follows fairly regularpatterns; however, the DNA sequences between genes (i.e. non- coding DNA) differ greatly amongindividuals. Scientists understand how to identify and analyze these special sequences, so they can tell iftwo DNA samples probably came from the same person. Since DNA is inherited from each parent, anindividual shares patterns within these sequences with his or her parents. Therefore, scientists can alsotell whether or not two samples came from individuals who are related.
hope it helps<3Mutations involved a change in the
carbohydrates
lipids
nucleic acids
proteins
List at least two ways in which you can distinguish between thyroid and parathyroid tissue
Answer:
Two key differences between the tissue of thyroid and parathyroid are:
The thyroid tissue is made up of epithelial cells and consists of a colloid in it's follicle region. Whereas, parathyroid tissue consists of oxyphil and chief cells.
Thyroid tissue is made up of two cell types: follicular and parafollicular cells.
Record a brief (3-4 minute) audio essay explaining the key differences between a normal cell and the following altered cell types:HypertrophicAtrophicHyperplasticMetaplasticDysplastic
The adjusted cell types contrast from ordinary cells in size, shape, number, and capability because of changes in cytoplasm, organelles, and separation.
The critical contrasts between ordinary cell and modified cell types are as per the following:
Hypertrophic: Hypertrophic cells will be cells that have expanded in size because of an expansion in the volume of their cytoplasm and organelles. Atrophic: Atrophic cells will be cells that have shriveled because of a diminishing in the volume of their cytoplasm and organelles.Hyperplastic: Hyperplastic cells will be cells that have gone through an expansion in the number of cells in a tissue. Metaplastic: Metaplastic cells will be cells that have changed starting with one sort of cell and then onto the next. Dysplastic: Dysplastic cells will be cells that have unusual morphological and practical attributes.To learn more about normal cells and altered cells at
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If you add 25 g of food in 225 ml water, after mixing well, 1 ml is taken and added to 10 ml of water then a dilution of 1:9 is made then 5 ml is added to 50 ml of water. Finally, 1 ml from this last dilution is plated. After incubation, 143 colonies are counted. What is the total count per gram of the original sample?
The total count per gram of the original sample is 5188000 colonies/g.
What is dilution?Generally, The total count per gram of the original sample can be calculated using the following steps:
Initial dilution: 1 ml from the first mixture of 25 g food and 225 ml water is added to 10 ml water, making a dilution of 1:9.Second dilution: 5 ml from the first dilution is added to 50 ml water, making a dilution of 1:10.Final count: After incubation, 143 colonies are counted from 1 ml of the second dilution.The final count per ml of the second dilution is 143 colonies/ml.
To find the count per ml of the first dilution, we multiply by the dilution factor of 10:
143 colonies/ml * 10 = 1430 colonies/ml.
To find the count per ml of the original mixture, we multiply by the dilution factor of 9:
1430 colonies/ml * 9 = 12970 colonies/ml.
To find the count per gram of food, we divide by the volume of food (in ml) added to the water:
12970 colonies/ml / 0.025 ml = 5188000 colonies/g.
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