Substance A is converted to substance B in a chemical reaction. it adjusts the ph of the reaction medium. this statement best describes the role of an enzyme during this reaction.
What is ph?The H+ ion concentration's negative logarithm is known as pH. As a result, the meaning of pH is justified as the strength of hydrogen.
Although less apparent, the mathematical definition of pH is more beneficial overall. It claims that the pH is equal to the negative logarithmic value of the hydrogen ion (H+) concentration.
[H+] = -log pH
The pH of a water source depends on how acidic or alkaline it is. The activity of the hydrogen atoms determines the pH level since this activity is a reliable predictor of the acidity or alkalinity of the water. The pH scale has a range of 0 to 14, with 7.0 being neutral, as may be seen below. According to conventional wisdom, water with a low pH is acidic, whereas water with a high pH is basic (alkaline). The pH of pure water should be 7.0, however because of the impurities in the water, water supplies appears acidic.
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Which of these is a base? O NaOH Vinegar Lemon Juice HCI
Answer:
NaOH
Explanation:
Since no acid-base reaction equations are provided for each substance, we will have to use logic to find the answer. We can immediately eliminate vinegar and lemon juice, which are both acids, as acidic substances generally taste sour. Next, we can apply the idea of most acids having a +H in their chemical formula while most bases have a -OH in their chemical formula. Because HCl has a +H in its formula, it is an acid, and since NaOH has a -OH in its formula, NaOH is a base.
Write a scientific explanation about how different organisms compare throughout development.
Due to the fact that some homologous components can only be observed during embryonic development, embryology was crucial to understanding how a species has evolved.
The discipline of comparative anatomy known as embryology examines how vertebrate animals grow before giving birth or hatching. Similarities between embryos and adults can be evidence of shared ancestry. For instance, as seen in the figure below, all vertebrate embryos possess tails as well as gill slits.
The embryological stages of several creatures are very similar, pointing to shared ancestry.
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Violet flowers are the dominant trait and white flowers are they recessive trait .what would the phenotype be for a heterozygous flower?
a. violet
b. white
If two heterozygous flowers were to be crossed, what would be the phenotypes of the offspring
a. all white
b. all violet
c some violet, some white
Let us assume the condition that has been represented here:
Flower color is represented by the allele A.
Hence, the dominant violet color would be A, while the alternate white color would be represented by a.
From the above assumptions, a heterozygous violet flower would have the genotype Aa, while a white flower would have the genotype aa.
Now, crossing the two flowers:
Aa x aa
Aa Aa aa aa
From the results of the cross, the offspring's genotypes, phenotypes, and their respective probabilities would be as follows:
Aa - violet color - 1/2
aa - white flower color - 1/2
In order words, the cross will yield offspring with violet color flower (genotype, Aa) and white flower color (genotype, aa) each with 1/2 probability.
What is phenotype and genotype?Phenotype has been defined as the physical expression of the gene. Each gene in an individual that has been expressed or can be seen physically is what makes up the phenotype.
The term genotype has the genetic makeup of the individual i.e the genes responsible for the traits or character that has been expressed in an individual.
Therefore, Aa - violet color - 1/2
aa - white flower color - 1/2
In order words, the cross will yield offspring with violet color flower (genotype, Aa) and white flower color (genotype, aa) each with 1/2 probability.
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A cell is the smallest unit of biological organization that has all of the characteristics of life. Which of the following are considered characteristics of life?
Check All That Apply
Passes on genetic information to offspring
Acquires materials and energy to manufacture cellular components
Unresponsive to changes in the internal and external environment
Adapts to changes in its environment
Internal environment is unregulated and unstable
Answer:
unresponsive to changes in the internal and external environment
Unresponsive to changes in the internal and external environment.
What is Biological Organization?Living things have a strong sense of order and organization that may be studied on a scale from small to enormous. The lowest and most basic unit of matter is the atom. It consists of an electron-surrounded nucleus.
Macromolecules, which are big molecules often generated by polymerization, are many of the biologically significant compounds (a polymer is a large molecule that is made by combining smaller units called monomers, which are simpler than macromolecules).
Deoxyribonucleic acid (DNA), which carries the blueprints for the structure and operation of every living thing, is an illustration of a macromolecule.
Therefore, Unresponsive to changes in the internal and external environment.
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Another type of digestion in the stomach produces physical changes. Describe the actions of the stomach that lead to these physical changes.
Answer:
When food is physically changed, mechanical digestion occurs. Food is broken into smaller parts and mixes continually with enzymes and other gastric juices. Mechanical digestion occurs in the mouth, stomach, and small intestine. Food is chemically changed in digestion when new, smaller substances are formed. These chemical changes are examples of chemical digestion. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine. Large molecules of food are broken down into smaller molecules that can be absorbed by our cells. Carbohydrates, proteins, and fats are broken down in different parts of the digestive system using different kinds of enzymes. Different kinds of small molecules are formed by these processes.
Explanation:
Hope this helped answer you'r question
What phase is the indicated cell currently in?
A. Anaphase
B. Interphase
C. Cytokinesis
D. Prophase
Answer:
Interphase
Explanation:
Because in interphase chromosomes are not visible
What happens in the process of gravitational condensation?
In the process of gravitational condensation, an object decreases in size due to the collision of materials.
When two materials collide, an object shrinks in size. Materials from solar nebulae are used to create gas particles. Materials from the solar nebula are converted into solid particles.
The force that pulls objects with mass toward the Earth and attracts them there is known as gravitational force. It should be understood that when heated water transforms from a liquid condition to a gaseous state, the size will decrease.
We observe that the cohesive forces of fluids that cause droplets to coalesce and bond together, as well as the quantum condensation of a BEC, are comparable to the effects of gravity on matter.
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Type your response in the box.
Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocytosis, the cell brings specific molecules it needs, including fluid, into the cell. Why does the structure of the plasma membrane make this type of transport necessary for fluids?
The structure of the plasma membrane make this type of transport necessary for fluids because while the heads of the phospholipid structure attract water, the tails are hydrophobic. The model depicts how the hydrophilic section folds around the fluid molecules to bring them into the cell so they do not need to pass through the hydrophobic tails.
What is the plasma membrane?The plasma membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.
The plasma membrane also known as the cell membrane has the following function:
provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.Learn more about the plasma membrane at: https://brainly.com/question/1873225
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As scientists have studied the evolution of BSE, they note that it is very similar to a disease that affects sheep. It has also been shown to be similar to a disease that affects rodents. Humans have been infected with a variation as well. What is the MOST reasonable conclusion that can be made from these studies?
A. Every species is exposed to the disease in different ways.
B. The disease can mutate and infect different species.
C. Animals like cattle can be considered a “dead end host.”
D. Scientists are confusing separate diseases as just one disease.
The conclusion that can be made about the evolution of BSE and similar type of disease affecting sheep, rodents and humans is: (B) The disease can mutate and infect different species.
BSE stands for Bovine Spongiform Encephalopathy. It is a neurological disease affecting the cattle. It is caused by a transmissible agent called prion. The disease can be transmitted from cattle to humans via there meat.
Mutation is the change in the sequence of DNA that may cause some harmful effects. Mutations can be of two types: Point mutation and Frameshift mutation. Some mutation do not cause any harmful or visible changes, these are termed silent mutations.
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Weather
What happens in a low-pressure system? (1 point)
O The wind has less intensity.
O The sky is clear.
O There is no precipitation.
Temperature changes.
In a low-pressure system, the temperature changes.
Pressure in the environment is the force exerted on a surface by the air above it as gravity pulls it to the Earth. In scientific terms, pressure can be defined as the force exerted on a surface per unit area. The atmospheric pressure is also known by the name barometric pressure.
Temperature is the measure of the hotness of coldness of the environment. The units used to measure the temperature are Celsius, Kelvin and Fahrenheit. Temperature and pressure are directly proportional and hence in low pressure system, the temperature will also be low.
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A student conducts an investigation to show the relationship between temperature and kinetic energy in one phase of matter. What would the graph of this relationship look like?(1 point) Responses an S-shaped curve an S-shaped curve a diagonal line a diagonal line a horizontal line a horizontal line a U-shaped curve
The graph of this relationship looks like a horizontal line. In one phase of matter, the relationship between temperature and kinetic energy is exponential.
A substance's kinetic energy is directly proportional to its temperature. Since kinetic energy is the energy that a substance has as a result of its molecules moving, a substance's kinetic energy increases when it absorbs heat because its molecules move faster.
As a solid transforms into a liquid during a phase change, its temperature stays constant because the heat energy is converted to potential energy. Similar to this, when heat is given to a liquid, the temperature rises as the molecules, once more, move more quickly.
Freezing describes the transition from a liquid to a solid state. Its particles decelerate down and become closer together as a result.
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Answer:
horizontal line
Explanation:
15 POINTS!!
The goal of MEIOSIS is to create:
Two identical somatic cells
Four unique sex cells
Four identical somatic cells
Two unique sex cells
A sample of cancer cells from a breast cancer tumor were treated with various concentrations of a drug, drug X. The percent survival for these tumor cells is shown in the graph here. Which statements are supported by the experimental design and the data shown in the graph? Select ALL that apply. A * B 4x D The safest dose of the drug is 1000 micromolar concentration. C All concentrations of the drug show a decrease in cell survival compared to the control. E The cells survive but stop dividing at low concentration of the drug. Only concentrations above 100 micromolar for drug X allow for greater than 50% of the cells to die. The dose response curve indicates that higher concentrations of the drug are more effective at decreasing cell viability of the cancer cells.
High attrition rates in the development of cancer drugs have been attributed, in part, to the low repeatability of preclinical drug discovery models. Ineffective experimental planning and a lack of scientific transparency may result in experimental biases that have an impact on the reliability, validity, and reproducibility of results.
Here, we identify causes of experimental variability in traditional 2D cell-based cancer drug screening to assess the impact of confounders on cell viability for platinum medicines (cisplatin and carboplatin) and a proteasome inhibitor treated MCF7 and HCC38 breast cancer cell lines (bortezomib). According to variance component analysis, differences in cell viability were more frequently related to the selection of the medication and cell line than to the kind of growth media or the length of the test incubation period.
Due to the possible danger of evaporation and the resulting impact on dose-response curves, alternative ways of keeping diluted pharmaceutical medicines and the use of DMSO controls should be carefully considered. For HCC38, MCF7, MCF-10A, and MDA-MB-436 cells that had been treated with bortezomib and cisplatin, the results were repeatable thanks to the optimization of the experimental conditions, which also significantly enhanced the quality of the data. Together, these results show that by identifying potential confounders and subsequently optimizing experimental parameters for each cell line, cell-based drug screens' replicability (the analyst repeats the experiment multiple times) and reproducibility (different analysts perform the same experiment under different experimental conditions) can be enhanced.
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HELP ME PLEASE I NEED THIS BY TMR !!!!
Answer:
AUG GUC AGU CCA CCU GCU CAU UAA
Programs for seven amino acids, the last one is a stop codon.
I think there's 24 nucleotides but like I haven't learned biology in so long so sorry if this is wrong.
Explanation:
Using the terms solar radiation and terrestrial radiation, explain the heating of the earth by the
sun.
Solar power is referred to as solar radiation. The amount of solar energy that reaches the earth is referred to as insolation. The radiation that the planet emits is known as terrestrial radiation.
How does the earth's atmosphere maintain its temperature?A tiny amount of radiation from the Earth's surface and the warmed upper atmosphere both radiate into space. The majority of the longwave radiation produced warms the lower atmosphere, which then warms the surface of our planet.
Does terrestrial radiation heat the atmosphere effectively?Therefore, long wave terrestrial radiation is primarily responsible for warming the atmosphere. The majority of the energy that reaches the earth's surface is in short wavelengths. Incoming solar radiation, often known as insolation, is the name for the energy that the earth receives from the sun.
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Explain the relationship between cancer, cell cycle checkpoints, and
apoptosis.
Answer:
Checkpoints are mechanisms that regulate progression through the cell cycle ensuringinsuing that each step takes place only once and in the right sequence. Mutations of checkpoint proteins are frequent in all types of cancer as defects in cell cycle control can lead to genetic instability.
Explanation:
3. As a result of meiosis, each of the daughter cells produced from the original cell... Group of answer choices
receives a few chromosomes from the original cell
receives an exact copy of all the chromosomes present in the original cell
donates a chromosome to the original cell
receives exactly half the chromosomes from the original cell
The result of meiosis is that each daughter cell produced from the original cell receives exactly half the chromosomes from the original cell (option D).
What is meiosis?Meiosis is the cell division of a diploid cell into four haploid cells, which develop to produce gametes or sex cells.
These cells are the gametes; sperms in males and egg in females. The process of meiosis is divided into 2 stages. Each stage is subdivided into several phases.
The meiotic process is called reduction division because it reduces the number of chromosomes in the parent cell by half.
For example, if the somatic cell of a dog posseses 78 chromosomes, this means that as a result of meiosis, the gametes of the dog will possess 39 chromosomes each.
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What would happen if a group of cells in an organism suddenly began dividing at a higher rate?
Could this become problematic for the organism? Why?
What is the definition of epistasis?
Genetics entails a phenomenon, epistasis wherein the impact of a gene mutation depends on the absence or presence of mutations in one or more other genes referred to as modifier genes.
As a result, epistatic mutations behave differently when they occur alone than when they do together. Particularly, epistasis is used to show that other genes can obscure the effects of gene variants.
It has been determined that understanding gene interactions, also known as epistasis, is crucial to understanding the function of genetic pathways, their structure, and the evolutionary dynamics of complex genetic systems. With the advent of high output functional genomics and the development of system techniques in the area of biology, there is a renewed acceptance for both the importance of investigating gene interactions and to address concerns in a coordinated quantitative fashion. The recently found cognition, which links the genetic underpinnings of evolution to specific molecular modifications, joins this.
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Which sentence best describes how most ATP is produced during cellular
respiration?
A. ATP synthase uses kinetic energy to join ADP molecules with
phosphate groups.
B. The electron transport chain causes hydrogen ions to move into
the intermembrane space.
C. Twice as much ATP is made during glycolysis than is used to split
glucose.
D. Glycolysis uses ATP to split one glucose molecule into two
pyruvate molecules.
Answer:
Explanation:A. ATP synthase uses kinetic energy to join ADP molecules withphosphate groups.
Humans have one of four blood types: A, B, AB, or O. Explain what determines a person’s blood type. What antigens are on the blood cells in a person with each of these blood types? What antibodies are in the blood of a person with each of these blood types?
Answer:
Human gene I (isohaemagglutinin) has three allelic forms: Iᴬ, Iᴮ, and i. Iᴬ produces type A antigens on the red blood cells. Iᴮ produces type B antigens. i which is a recessive allele does not produce any antigen.
Human blood type is determined by antigens on the red blood cells and exists as four possible phenotypes: A, B, AB, & O. Blood group A (IᴬIᴬ or Iᴬi) has A antigens on the red blood cells with anti-B antibodies in the blood plasma.Blood group B (IᴮIᴮ or Iᴮi) has B antigens on the red blood cells with anti-A antibodies in the blood plasma.Blood group O (ii) has no antigens on the red blood cells but has both anti-A and anti-B antibodies in the blood plasma.Blood group AB (IᴬIᴮ) has both A and B antigens on the red blood cells but no antibodies in the blood plasma.A semipermeable membrane has a 4 percent salt solution on the right side and a 12 percent salt solution on the left side. What will most likely occur?
A. osmosis of water from the right to the left
B. passive transport of sale from the right to the left
C. osmosis of water from the left to the right
D. facilitated diffusion of salt from the left to the right
Water will flow from the right side of the plasma membrane to the left side of the membrane due to osmosis. Hence, the correct answer is option A.
How do molecules move across the cell membrane?The molecules move across the cell membrane. Water moves from high concentrations to low concentrations by osmosis. Here, the left side has a 12% salt solution. Out of 100, the salt concentration is 12. The right side has 4%. Out of 100 parts, 4 parts of salt are present. The water concentration is higher on the right side (96 parts ). Hence, the water will move from the right side to the left side by the process of osmosis.
Hence, option A is the correct answer.
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. Is it true that animals can cause physical weathering? Explain
your whether your answer is yes or no.
Help please don’t understand this. Will give brainliest!
Helpp
The lactose (lac) operon in E. coli is an example of a gene that is repressed when lactose is not available in a cell. In 3-5
sentences, explain what this means, using correct terminology (4 points)
The set of genes known as the lactose operon in E. coli controls the synthesis of the enzymes required for breaking down lactose in bacterial cells.
The genes in the lac operon are active when lactose is not present.
When lactose isn't present, the lac repressor forms a strong bond with the operator and stops RNA polymerase from starting transcription. However, the lac repressor loses its capacity to bind DNA when lactose is present. It detaches from the operator and makes room for RNA polymerase to start transcription of the operon.
It is an illustration of an inducible operon where the transcription of structural genes is induced by the presence of a crucial metabolic component (lactose, an alternative energy source).
The lactose molecule acts as a signal molecule if lactose is present in the medium because it binds to the repressor and prevents it from binding to the operator.
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Answer: E. coli controls the synthesis of the enzymes required for breaking down lactose in bacterial cells.
Explanation:
What is meant by logistic growth?
Logistic growth takes place when a population's per capita growth rate decreases as population size approach a maximum imposed by limited resources, the carrying capacity( K).
What happens during logistic growth?
When resources are limited, populations exhibit logistic growth. In logistic growth, population expansion decreases as resources become scarce, leveling off when the carrying capacity of the environment is reached, resulting in an S-shaped curve.
Is Human growth exponential or logistic?
The world's human population is growing at an exponential rate.
What is logistic growth used for?
The logistic function models the exponential growth of a population but also considers factors like the carrying capacity of the land.
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How does the corrigated cardboard digestive/circulatory system work
The circulatory system maintains blood flow throughout the body, while the digestive system is in charge of the ingestion, breakdown, absorption, and excretion of nutrients and minerals.
The human body has numerous systems, each of which is in charge of a certain function, and they all work together to provide the necessities for life. To make sure the body gets all it needs to keep working, many of these systems must communicate with one another. The digestive system and the circulatory system are two of these systems. Doing so guarantees that each portion of the body receives the essentials for function. Both methods work together to provide nourishment to the many-body sections.
So, we may say that the circulatory system maintains blood flow throughout the body. In contrast, the digestive system is responsible for the ingestion, breakdown, uptake, and elimination of nutrients and minerals.
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What part is unique to the kingdom Monera?(1 point)
Responses
Nucleus
Nucleus
Ribosomes
Ribosomes
DNA
DNA
Nucleoid
ribosomes is unique to the Monera
What is formed when tree cell walls are replaced by minerals?
O a coprolite
O a superposition
O a gastrolith
Opetrified wood
Petrified Wood is formed when tree cell walls are replaced by minerals.
Petrification is the outcome of the replacement of a tree or tree-like plant by stone during the mineralization process, which frequently also involves permineralization and replacement. Minerals have been used to mimic the biological components of cell walls.
what is mineralization process?
Through the process of mineralization, chemicals found in organic matter are oxidized or broken down into forms that are readily absorbed by plants. Earthworms and other members of the soil's microbiota, including fungi and bacteria, play a major role in the transformation of organic molecules in the soil.
When an inorganic substance precipitates in an organic matrix, it is called mineralization. Mineralization that occurs through biomineralization. Bone mineralization is an illustration of mineralization. Tissues that have experienced mineralization are referred to as mineralized tissues.
Therefore, Option D is correct.
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please help me asap
The inputs of cellular respiration are food molecules such as glucose and oxygen, while the outputs include ATP and carbon dioxide.
What is the process of cellular respiration?The process of cellular respiration makes reference to all series of metabolic steps required to transform foods into ATP by using aerobic pathways, which requires oxygen as an electron acceptor during the electron transport chain in the oxidative phosphorylation stage.
Therefore, with this data, we can see that the process of cellular respiration requires glucose and oxygen as inputs, while outputs include ATP (the energy coin of cells) and carbon dioxide.
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