Answer:
taxonomy
started by linnaeus
Explanation:
1. state the characteristics of Chrysophytes.
2. write the characteristics of dinoflagellates.
3. write the characteristics of euglenoids.
4. write the characteristics of Slime moulds.
1. Chrysophytes
⇒ Unicellar
⇒ Present in water bodies with low calcium levels.
⇒ Golden yellow colour due to accessory pigment.
⇒ Cell walls made of cellulose and silica.
⇒ Free swimming.
⇒ Two unequal flagella.
2. Dinoflagellates
⇒ Dinoflagellates are essentially golden-brown, biflagellate, unicellular motile protists.
⇒ Golden brown is the primary color, but due to changes in the ratios of other pigments, it may also take on yellow, green, brown, or even blue forms.
⇒ Theca or lorica, composed of articulated and sculpted cellulose plates, is a stiff covering that typically covers cells.
⇒ One flagellum is transverse and the other is longitudinal, making the two flagella distinct (heterokont).
⇒ Mesokaryon is the name given to the big nucleus.
⇒ Chlorophyll a and chlorophyll c are found in plastids or chromatophores.
⇒ In the sea, certain dinoflagellates like Gymnodinium and Gonyaulax proliferate in vast numbers, turning the water red and resulting in the so-called "red tide."
⇒ Dinoflagellates in the ocean exhibit bioluminescence. such as Noctiluca.
3. Euglenoids
⇒ Unicellular protists called euglenoids, like the genus Euglena, are frequently found in freshwater.
⇒ The pellicle, a protein-rich cell membrane, exists in place of the cell wall.
⇒ They bear two flagella on the anterior end of the body.
⇒ A small light sensitive eye spot is present.
⇒ They can prepare their own food because they have photosynthetic pigments like chlorophyll. They act like heterotrophs when there is no light, though, by catching other tiny aquatic creatures.
⇒ They are referred regarded as the connecting link between plants and animals since they exhibit both plant and animal-like characteristics, making it difficult to categorize them.
4. Slime moulds
⇒ Chlorophyll does not exist in them.
⇒ Only the plasma membrane encloses them. The spores, however, contain cellulose cell walls.
⇒ They often reside near decomposing vegetation.
⇒ They have a diverse spectrum of coloring.
⇒ They are saprotrophic or phagotrophic feeders.
Metformin and longevity (METAL): a window of opportunity study investigating the biological effects of metformin in localised prostate cancer
Metformin and longevity (METAL): a window of opportunity study investigating the biological effects of metformin in localized prostate cancer is totally based on the working of metformin .
What is Metformin? A biguanide oral hypoglycaemic drug called metformin is frequently prescribed to treat type 2 diabetes mellitus. Metformin has been linked to a decreased risk of cancer incidence of a number of solid tumors, including prostate cancer, in addition to its anti-diabetic impact (PCa).The biochemical mechanisms behind these observations in PCa have not yet been thoroughly characterized. The formation and progression of PCa are thought to be influenced by high insulin and insulin-like growth factor-1 (IGF-1) levels, hence one theory is that the indirect insulin reducing impact may have an anti-neoplastic effect.To learn more about Metformin with the given link
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HELP!
Which characteristics do all bony and jawless fish have in common? Check all that apply.
backbone
swim bladder
scales
gills
bony skeleton
The bony skeleton and gills are common in bony and jawless fishes
Both cartilaginous and bony fish have an endoskeleton. bony fish and fish with cartilage both have gills for breathing. bony fish and fish with cartilage both have jaws in their mouths. Fish with bony bones and fish with cartilage both have paired fins. They are unable to regulate their internal body temperature.
Their core body temperature is comparable to the ambient temperature. The majority of jawless fish have paired gill chambers, sometimes as many as seven, and a cartilage-based skeleton. Bony fish have gills on the sides of their heads and are scale-covered. While jawed fish ventilate their gills unidirectionally, with water streaming in at the mouth and out over the gills, the jawless fish ventilate their gill pouches with tidal water flow.
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Brain and spinal cord meninges are similar because ... They also have distinct differences including
Brain and spinal cord meninges are similar because pia mater in both areas is made of the same tissue They also have distinct differences including dura mater in the two regions are made of different tissues.
Meninges, the protective coverings of the central nervous system, come in two varieties: cranial and spinal. The dura mater, arachnoid mater, and pia mater are the three connective tissue layers that make up most of their structure.The fundamental distinction between cranial and spinal meninges is that, while spinal meninges are protective coverings for the spinal cord, cranial meninges are those for the brain, consisting of channels in the dura mater between various areas of the brain called Dural folds. Additionally, the dura mater in the spinal meninges only has one layer, whereas the dura mater in the cranial meninges has two levels. Furthermore, cranial meninges may not result in an epidural space while spinal meninges produce an epidural space filled with fat.learn more about Brain and spinal cord here: https://brainly.com/question/26348097
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In cell signaling, after a signal is sent, _______\.\* 2 points a. some activity in a target cell changes b. signal molecules bind to receptors on target cells c. mitosis begins d. signal transduction is turned off
In cell signalling, after a signal is sent, signal molecules bind to receptors on target cells and some activity in a target cell changes.
There are three stages in cell signalling :
1. The process of reception occurs when a signalling molecule from the extracellular environment is recognized by a cell. The chemical signal, which is also known as a ligand, is recognized as a signal when it attaches to a receptor protein either on the exterior of the cell or on the interior of the cell.
2. Transduction: This process occurs when the signalling molecule interacts with the receptor, which causes a change in the protein that makes up the receptor. The process of transduction is kicked off by this modification. In most cases, signal transduction occurs through a pathway that consists of numerous stages. The signal transduction route contains relay molecules, each of which influences the subsequent molecule in the pathway.
3. Reaction: In the third and last step, the signal causes a certain cellular response.
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Developing a Self-Formed Ectodermal Autonomous Multi-Zone Organoid Model Using Human Stem Cells to Examine the Effect of Doxycycline Treatment on Uveal Melanoma
Developing a Self-Formed Ectodermal Autonomous Multi-Zone Organoid Model Using Human Stem Cells to Examine the Effect of Doxycycline Treatment on Uveal Melanoma.
The body's building blocks are stem cells, which are cells that give rise to all other cells with specific roles. Daughter cells are created when stem cells divide properly in the body or a lab to create more cells.
Researchers insert stem cells into the apparatus, either human embryonic stem cells or induced pluripotent stem cells, which can be created from adult cells. Then, the researchers add chemicals to nearby wells that trigger cells to develop essential human embryonic features.
Stem cells are found in a wide variety of organs and tissues throughout the body, including the brain, blood, bone marrow, muscle, skin, heart, and liver tissues. They are dormant in these regions until required to regenerate lost or damaged tissue.
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The layer of the arteriole wall that can contains smooth muscle and can produce vasoconstriction is the
Tunica media is the layer of the arteriole wall that can contain smooth muscle and can produce vasoconstriction.
What is tunica media?The smooth (involuntary) muscle cells and elastic fibers that make up the tunica medium, or middle coat, are organized in roughly spiral layers. The tough tunica adventitia, also known as the outer coat, is a layer that serves as support. It is made primarily of collagen fibers.
The arterial wall's ability to support mechanical loads is also impacted by its elasticity. The etiology of atherosclerotic lesions is significantly influenced by the media's metabolic condition. Vascular SMCs, elastin, and collagen fibers are grouped in a highly ordered manner in the tunica media.
Muscular arteries typically have diameters between 0.1 and 10 millimeters. Muscular arteries are able to play a significant part in vasoconstriction due to their thick tunica media.
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Antelopes and elephants feed on the same species of grasses and shrubs in a savanna and the fitness of each species is reduced when they co-occur. What form of species interaction occurs between the antelopes and elephants
Interspecific competition occurs between antelopes and elephants.
The term "competition" refers to the process that takes place among many species as they fight for the same limited resources in order to maintain their own existence. This struggle over resources occurs among organisms because these species occupy niches that overlap, and as a result, they are compelled to use the same resources like food, water, and shelter.
Competition can be either interspecific or intraspecific. The term "interspecific competition" refers to a type of competition that occurs between various species that live in the same biological area and are dependent on the same source of food.
In the question, both antelopes and elephants feed on the same grass and shrub species. Therefore they compete amongst themselves as a result of which their fitness is reduced.
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The specific place of an organism in an ecosystem is called its
Answer:
The specific place where an organism lives is called its habitat.
Select the correct answer from each drop-down menu. in a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. it was observed that there were more squirrels and fewer raccoons. this situation indicates that . the least amount of energy from the sun will be received by the .
humans,animals and living earth
IL-22 inhibits epidermal di erentiation and induces proinflammatory gene expression and migration of human keratinocytes
The given statement that IL-22 inhibits epidermal decentration and induces proinflammatory gene expression and migration of human keratinocytes holds true
What is IL-22?IL-22 belongs to a family of cytokines structurally related to IL-10, including IL-19, IL-20, IL-24, and IL-26. In contrast to IL-10, IL-22 has proinflammatory activities. IL-22 signals through a class II cytokine receptor composed of an IL-22-binding chain, IL-22RA1, and the IL-10RB subunit, which is shared with the IL-10R. In the present study, we show that short-term cultured human epidermal keratinocytes express a functional IL-22R but no IL-10R. Accordingly, IL-22 but not IL-10 induces STAT3 activation in keratinocytes. Using a cDNA array screening approach, real-time RT-PCR, and Western blot analysis, we demonstrate that IL-22 up-regulates, in a dose-dependent manner, the expression of S100A7, S100A8, S100A9, a group of proinflammatory molecules belonging to the S100 family of calcium-binding proteins, as well as the matrix metalloproteinase 3, the platelet-derived growth factor A, and the CXCL5 chemokine. In addition, IL-22 induces keratinocyte migration in an in vitro injury model and down-regulates the expression of at least seven genes associated with keratinocyte differentiation. Finally, we show that IL-22 strongly induces hyperplasia of reconstituted human epidermis. Taken together, these results suggest that IL-22 plays an important role in skin inflammatory processes and wound healing.
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I WILL MARK U BRAINLIEST IF U ANSWER THIS QUESTION!
[tex] \\ \\ [/tex]
Respiratory and Circulatory System:
= > The respiratory system and the circulatory system are two important organ systems in the human body. The respiratory system involves all passageways and organs involved in breathing, while the circulatory system involves the heart and blood vessels.
Answer and Explanation: 1
= > The respiratory system and circulatory system interact in both the enriching of blood with oxygen and the delivery of oxygen-rich blood to the tissues.
= > In the lungs, air fills small sacs called alveoli. The alveoli are made of thin sheets of squamous epithelial cells suffused with capillaries. The epithelial tissue allows oxygen from the inhaled air to pass into the blood of the capillaries while allowing waste gases, like carbon dioxide, to escape the blood and be exhaled from the body.
= > After leaving the lungs, the blood returns to the heart, where it is pumped back out to the rest of the body. The oxygen-rich blood travels through the blood vessels and eventually into capillaries that suffuse the tissues of the body. In the tissues, the oxygen from the blood is extracted and delivered to the cells to power their metabolic functions.
= > Both processes are vital to the survival of an organism because tissues would die without the delivery of oxygen that begins in the interaction of the respiratory system and circulatory system.
Hope this answer is helpful foe yuuh ^o^
ur gonna mark this ans as Brainlist ryt? as u mentioned! ^o^
The respiratory and circulatory systems interact in the supply of oxygen to the cells of the body.
Circulatory and respiratory system interactionThe respiratory system supplies oxygen into the blood. The circulatory system transport oxygenated blood to tissues/cells that require oxygen and supply them with the gas.
On the other hand, carbon dioxide waste that needs to leave the body system is transported by the blood from cells/tissues to the respiratory system. The respiratory system gets rid of this waste.
Without oxygen supply and getting rid of carbon dioxide, the cells of the body will die in no time.
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Both parents of a newborn are heterozygous for an autosomal dominant genetic disorder. What are the odds that the newborn would also display the disorder
What are the ""bruce lees"" of the immune system? why did they compare them to the real bruce lee?
Answer: Iron deficient macrophages are the Bruce Lees of the immune system.
Label the parts of the stem using the arrows provided.
For each structure indicated in the diagram, identify its name and function in the stem
system.
Monocot primary stem is composed of several vascular boundaries immerse in the parenchymatous tissue. A: Epidermis. B: Fundamental tissue/Parenchimatous tissue. C: Phloem. D: Xylem.
What are the elements composing the monocot stem primary structure?
The primary structure of monocot stems has several vascular bundles distributed in the parenchyma tissue.
Parenchyma / Fundamenta tissue
This is the fundamental tissue. Since monocots have bundles dispersed everywhere, it is difficult to differentiate the medulla and the cortex.
The fundamental tissue is composed of several parenchymatous cells. that store food.
Epidermis
This is a single-celled layer of parenchymatous cells.
It protects the stem, and is closely associated with the cuticle.
Hypodermis
The hypodermis is located just below the epidermis. It is constituted of more than one parenchymatous cell layer.
It provides mechanical strength to the stem.
Vascular bundles
These are made of xylem and phloem cells. Their arrangement in bundles is always the same:
- Xylem faces the interior of the stem,
- Phloem is facing the exterior.
Vascular bundles are located everywhere in the stem
they are smaller and closer to each other in the outermost area. they are larger and more separated near the center of the stem
Phloem
Composed of sieve tubes and companion cells.
Its function is to transport photosynthetic products to different parts of the plant where they are being used or stored.
Xylem
Composed of metaxylem vessels and protoxylem vessels.
These vessels transport water and nutrients from the ground to the whole plant.
According to this information, the correct labels are,
A → Epidermis
B → Fundamental tissue. Parenchima tissue.
C → Phloem
D → Xylem
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The ________ is most commonly found in nature.
The wild-type trait is the most commonly found in nature.
What is wild-type trait?Wild-type trait is defined as the type of trait that is mostly the phenotype of an organism that is abundant in nature.
Examples of wild-type trait are:
orange and black tigers are the wild type and albino tigers are the mutant typeBlack and brown rats are the wild type while the albino rats are the mutants.Learn more about mutation here:
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Which instrument is designed to remove supragingival calculus from anterior teeth?
Periodontal curettes instrument is designed to remove supragingival calculus from anterior teeth.
What is periodontal curette ?
Periodontal curettes have a rounded back and toe, one face, and one or two cutting edges. They are often the tool of choice for removing supragingival calculi. When doing nonsurgical periodontal therapy as part of a patient's oral hygiene care, universal and Gracey curettes are frequently employed.
What type of instrument is periodontal curette ?
ultrasound instruments The main kind of treatment for eliminating plaque and calculus is ultrasound technology. These power-driven devices oscillate at incredibly fast rates, creating tiny vibrations that help eliminate calculus and subgingival plaque.
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Use Figure 1 to evaluate each trigonometric function of angle A . The side adjacent to angle A has length 8 and the side opposite angle A has length 10.
The trigonometric ratios are;
Sin A = 0.78Cos A = 0.625Tan A = 1.25What are the trigonometric ratio?The trigonometric ratios are sine, cosine and tangent. Now we have the hypotenuse of the triangle. Figure 1 has been shown in the image attached to this answer.
c = √8^2 + 10^2
c = 12.8
sin A = 10/12.8 = 0.78
Cos A = 8/12.8 = 0.625
Tan A = 10/8 = 1.25
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According to carl rogers, the ________ is how people see their actual traits and abilities.
According to Carl Rogers, the real self is how people see their actual traits and abilities.
The Real Self and the Ideal Self make up the personality, according to humanistic psychologist Carl Rogers. They are words that are used to characterize a person's personality facets. The true talents, aptitudes, preferences, and attributes of an individual are reflected in one's real self.The ideal self and the real self were further split by Rogers into two groups. The difference between your real self and your ideal self is that the latter is the person you truly are. Rogers emphasized the requirement for consistency between these two selves.For example, your ideal self might be someone who spends a lot of time learning, does well in science topics, and is not sickened by the sight of blood. If your Real Self differs significantly from this idealized version, you may feel unsatisfied with your life and like a failure.learn more about Carl Rogers here: https://brainly.com/question/14988475
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Permeability is _____ . Select one: a. the ability of a solid to allow fluids to pass through b. the process by which plants release water vapor to the atmosphere c. the amount of water vapor in the air relative to the maximum amount of water vapor the air can hold. d. the percentage of pore space in the rock
Answer:
A. The ability of a solid to allow fluids to pass throughExplanation:
Greetings !Permeability of cell membrane refers to the ease with which a molecule can pass through a cell membrane. It is the rate at which the passive diffusion occurs through the membrane.
A solid's permeability refers to its capacity to permit the passage of fluids. As a result, option A is the right response.
A substance's permeability, such as that of rocks, is determined by how easily liquids can pass through it. Fluids can move through the porous material's network of interconnected spaces because of this property.
It is the speed at which the membrane's passive diffusion takes place. It is vital to the movement of fluids through porous media, such as the movement of groundwater in aquifers or of oil through rock formations.
As a result, permeability is the quality of a material that allows a fluid to pass through it. Option A offers the right response.
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PLEASE ANSWER QUICK
Angiosperms represent
Group of answer choices
Seedless Vascular Plants
Nonflowering Seed Plants
Flowering Seed Plants
Gymnosperms
Answer:
"Flowering Seed Plants"
Explanation:
Angiosperms are vascular plants, which bears seeds in fruits or mature ovaries. Angiosperm forms flower that carries reproductive organs and fruits.
Jorge Lopez worked 40 hours this week and earned $1,000 in total compensation. Federal and state taxes and other withholdings totaled $350. Jorge's gross pay totals $
The Jorge's gross pay totals $1,000.
What is gross pay?
For households and individuals, gross income is the sum of all wages, salaries, profits, interest payments, rents, and other forms of earnings, before any deductions or taxes.
If Jorge Lopez worked 40 hours this week and earned $1,000 in total compensation, we can confidently say that Jorge Lopez's gross pay is the total amount received before any tax deduction which will be $1,000.
Thus, the Jorge's gross pay totals $1,000, since gross pay is the sum of all wages, salaries, profits, interest payments, rents, and other forms of earnings, before any deductions or taxes.
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Answer: Jorge’s gross pay totals $ 650
Explanation:
Trust me bro
A member of the ________ has been implicated as having a role in obesity.
a. both herpesviruses and poxviruses.
b. parvoviruses.
c. adenoviruses.
d. herpesviruses.
e. poxviruses.
A member of the adenoviruses has been implicated as having a role in obesity. That is option C.
What is Obesity?Obesity is defined as the eating disorder which is characterized by the body mass index that is above 30.
There are various types of obesity which includes the following:
Class 1 (low-risk) obesity, if BMI is 30.0 to 34.9. Class 2 (moderate-risk) obesity, if BMI is 35.0 to 39.9.Class 3 (high-risk) obesity, if BMI is equal to or greater than 40.0.The symptoms of obesity include the following:
Excess body fat, particularly around the waist.Shortness of breath.Sweating more than usual.Snoring.Trouble sleeping.Skin problems from moisture accumulating in the folds.Inability to perform simple physical tasks you could easily perform before weight gain.Recently, the adenoviruses has been associated to the causes of obesity.
It has been discovered that the virus directly acts on the adipocytes.
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choose all of the correct answers. the mechanisms through which evolution takes place are related to a set of processes that include:
fossils
mutation
natural selection
adaptation
generations
extinction
Answer:
Mutation, natural selection, adaption, extinction
Explanation:
I could be wrong but I'm pretty sure these are the main stages of evolution
Check all that are functions of the blood in the body transports oxygen from the lungs to body cells
Answer:
The functions of blood are ;
They carry cells that help fight pathogens .Regulate blood temperatures Prevent blood lose Transport of waste tot he liver and kidney for cleansingExplanation:
Blood carries white blood cells which helps in fighting of pathogens to keep the bod immune from infections .
Blood adjusts to environmental temperatures to keep the body either warm or cold.
When a person gets injures , blood avails platelets to the surface , which in turn hardens to form a clot on the wound hence prevent blood lose .
Action potential propagation begins (is first generated at) what region of a neuron?
The beginning of an action potential triggers close to the presynaptic cell's soma and the impulse's axonal propagation to presynaptic terminals.
Action potentials' fidelity, timing, and waveform during their transmission and arrival at the presynaptic terminal influence critical aspects of the synchronisation and effectiveness of synaptic communication at glutamate synapses in glutamate transmission.
Voltage-gated sodium conductances are crucial for initiating and spreading action potentials in neurons. Within milliseconds, voltage-gated sodium channels are activated and deactivated. Sodium channels open as the cell membrane becomes depolarized, causing an influx of sodium ions to depolarize the membrane further.
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If Johns used cars has 612 cars and 49 trucks , what percentage of the vehicles on Johns lot are trucks ?
The answer is 7.4%.
Percentage of trucks on the lot is equal to the ratio between the number of trucks and the total number of cars.
Number of trucks ÷ Total number of cars49 ÷ (49 + 612)49 ÷ 6617.4%Answer:
8.007%
Explanation:
Given:
John has
⇒ 612 cars
⇒ 49 cars
To find: We have to find what percentage of 612 the number 49 is.
To calculate this, we must multiply 49 by 100 and then divide it by 612.
Here is the formula to further illustrate: (100 * X)/Y = Percent
After inserting (X = 49) and (Y = 612) into the formula above, you should have a result of ⇒ (100 * 49) / 612 = 8.007%
Therefore, 49 is 8.007 percent of 612.
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What is the name of the important filter that protects the baby from virus/bacteria?.
The name of the important filter that protects the baby from virus/bacteria is the villi
This goes to say that the villi helps to prevent some bacteria and viruses from infecting babies.
What are pathogenic or infectious organisms?Pathogenic or infectious organisms are organisms which causes diseases to plants and animals.
Some examples of pathogenic or infectious organisms are:
BacteriaViruesSo therefore the name of the important filter that protects the baby from virus/bacteria is the villi
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Programmed cell death, or _____, takes place particularly in parts of the body where the cells are likely to accumulate significant genetic damage over time and are therefore at high risk of becoming cancerous.
Programmed cell death, or apoptosis , takes place particularly in parts of the body where the cells are likely to accumulate significant genetic damage over time and are therefore at high risk of becoming cancerous.
What causes apoptosis?Apoptosis is the process of programmed cell death. Unwanted cells, such as those between a developing hand's fingers, are removed during the early stages of development. Adult bodies employ apoptosis to get rid of cells that can no longer be repaired. Apoptosis aids in the prevention of cancer.
A cell will begin to undergo apoptosis when the survival signals are abruptly removed or when it separates from its surrounding cells. Additionally, heightened cellular stress brought on by conditions of extreme heat, DNA damage from radiation or chemotherapy, or pathogenic infection can cause cell death through apoptosis.
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If [e]t was the concentration of lactase in the kinetics trials, what expression gives the concentration of lactase in the commercial preparation of this enzyme?
DF = 1/250 x 1/2
Vt = Et
Vf = final concentration of lactase in the commercial preparation
DF = Vt / Vf
Vf = Vt / DF
Vf = Et / (1/250)(1/2)
Vf = Et x 500
The commercial preparation was first diluted by 1 - 250 to prepare the stock solution, and it was further diluted by 1 -2 by mixing with the substrate stock solution to perform the kinetics experiments.
Therefore, the dilution factor is done when you take whatever you initial volume was - in this case 1mL - and divide it by the new diluted volume - 0.1mL + 25mL. Then we get is 0.1/25.1, which is more easily solved as 1/250.
Since, this was a double dilution, 1mL of the initial dilution was diluted further with 1mL of substrate. So the second dilution factor will be 1/(1+1) = 1/2.
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