Ibuprofen is a common pain reliever and anti-inflammatory. Its formula is below. Determine the percent composition of hydrogen by mass. *

Answer:

If you did not follow the procedure as you should have.

Explanation:

You may have to repeat an experiment for several reasons. It can be because you need to be certain of the results so that you have to perform it several times. Or you need more precise results so that you can fine-tune the variables and repeat the experiment again.

The most common scenario where an experiment would be replicated would be in a situation where you did not follow the procedure that you have outlined exactly like you should have so that the results you got are not 100% reliable. In such a case, the experiment would need to be replicated for the correct results.

I hope this answer helps.

A scenario where an experiment would be replicated is;

When health psycholgists want to perform an experiment to show the effects of hypnosis on old people smoking and that same experiment has to be replicated on young people.

We are dealing with the concept of replication. Let us first understand what it means.

Replication is defined as the act of reproducing or copying something. This implies that when an experiment is repeated and the results from the original experiment are reproduced, we can call that an example of replication of the original study.

An example of a scenario where an experiment would be replicated is;

When health psychologists perform an experiment to show the effect of hypnosis in helping middle-aged smokers let go of their smoking habits. Replication will be when that same experiment is performed with younger smokers to see if the same result can be determined.

Read more about Replication at; https://brainly.com/question/860505

Answer:

The correct answer is option C. "Parietoacanthial (Waters) projection and both laterals".

Explanation:

While most of the nose is comprised of cartilage, there are nasal bones that could be affected result of an impact or an accident. In order to see if nasal bones are damaged, a radiographic examination comprised of parietoacanthial (Waters) projection and both laterals is needed. Images of both laterals are needed to cover both sides of the nose, while a parietoacanthial examination using the method of Waters is needed to see the front part of the nose.

Answer:

The nektonic organisms are those marine organisms that are found in almost every depth. These can move freely from one place to another in the ocean body due to its ability to swim. For example, Turtles, sharks, Fishes, and dolphins.

The planktonic organisms are passive swimmers, as they can move along with the ocean currents and are mostly found in the upper portion of the ocean body. For example, Diatoms and Rotifers.

The benthos is the bottom-dwelling organisms that cannot swim. For example, Bivalves, Corals and Sponges.

The nektonic organisms are different from the planktons and the benthos because the nektons can easily swim. They are constructed with such body parts that allow them to swim and migrate from one region to another region within the ocean water body. Whereas the planktons and the benthos cannot migrate easily and are considered as sessile organisms.

Answer:

Substrate level phosphorylation

Explanation:

Citric acid cycle forms two ATP molecules per glucose by Substrate level phosphorylation.  Succinyl-CoA is one of the intermediates of the citric acid cycle and has a thioester bond with a strongly negative standard free energy of hydrolysis. The energy released in the breakage of this bond during the conversion of succinyl CoA into succinate is used to drive the synthesis of a phosphoanhydride bond in either GTP. This process of ATP formation that is not coupled to the electron-transfer chain is called substrate-level phosphorylation.  The GTP formed by succinyl-CoA synthetase gives its terminal phosphoryl group to ADP and form ATP.

Answer:

Hello!

The answer is b. inadequate calorie intake and inadequate carbohydrate storage

Explanation:

Our body requires energy to carry out daily activities and body functions. This energy is available to the body in three forms:

Carbohydrates are the first and most readily available source of energy as starch and complex carbohydrates and sugars are immediately broken down into glucose which is available for body cells. Excess glucose is also stored as glycogen in the muscles. During exercise, carbohydrates, particularly, glucose are the first sources of energy for the body.

Fats provide the highest energy of all three (9 kilocalories compared to 4 of protein and carbohydrates). Fats are stored in the body in the form of adipose tissues or body fat. Any excess energy is readily stored by the body in the form of fats.

As proteins are not stored by the body, they are the last to be broken down during strenuous or prolonged exercise. Protein, particularly the skeletal muscle is the last to be used for energy in case of low calorie intake and inadequate carbohydrate stores.

Answer:

Glycoproteins.

Explanation:

The cell membrane is made up of different components each having different functions. If the disruption occurs in the components which spans the entire membrane than membrane transport is most likely to be affected.

Transmembrane proteins are the only components which helps to pass all the way through the facilitated membrane, and cell membrane transport. Glycoproteins are known as the transmembrane proteins which consist oligosaccharides glycans attached with amino acid side chain with the help of covalent bonds.

Disruption of connexins, which form gap junctions crucial for cell-to-cell communication, can lead to cellular traffic issues similar to those observed in gap junction disorders, especially impacting cardiac muscle function.

The disruption most likely to cause cellular traffic issues similar to those seen in gap junction disorders would be the disruption of connexins. Connexins are integral proteins that form gap junctions, which are vital for cell-to-cell communication in many tissues, including cardiac muscle. These junctions allow for the passage of ions and small molecules between cells, enabling functions such as the synchronized contraction of heart muscle cells.

Gap junctions consist of connexon channels, each made up of six connexin proteins. An interference in the interaction between connexins, such as the connexin 43-ezrin interaction, can lead to alterations in heart conductivity which may be significant post-myocardial infarction. Disruptions in connexins can cause complications in cellular traffic by impeding the flow of ions and other signaling molecules, thus affecting the entire tissue's function.

Answer:

Option A

Explanation:

Thawing is process in which a deep frozen food item is allowed to remain at any constant temperature which must be higher than 0 degree Fahrenheit. Once the food item is thawed, various processing can be practiced on it such as – cutting, slicing etc,  

The best way to thaw the poultry is to either keep it in microwave at a constant temperature or keep it in some cold water or in the refrigerator.  

Hence, option A is correct

Final answer:

The safe methods for thawing a frozen turkey breast, according to the USDA, are in the refrigerator, the cold water method with water changes every 30 minutes, and in the microwave, with immediate cooking afterward.

Explanation:

When deciding what method to use for thawing poultry, such as a frozen turkey breast, it is important to follow safe practices to prevent bacterial growth. The US Department of Agriculture (USDA) recommends three safe thawing methods:

Refrigeration: Thawing the turkey in the refrigerator is a safe method, though it requires planning ahead as it can take a full day for larger items to thaw.

Cold Water Method: Immersing the turkey breast in cold water, making sure the water is changed every 30 minutes, is another safe way to thaw the poultry quickly.

Using a Microwave: If you're short on time, you can use a microwave to thaw the turkey breast. If this method is chosen, you should cook the turkey immediately after thawing because some areas of the food may become warm and begin to cook during microwaving.

It is crucial to note that placing the turkey breast on the counter or in warm water are not recommended methods, as they can keep the food at temperatures that are conducive to bacterial growth.

Answer:

DNA polymerase I

Explanation:

DNA polymerase I has 3' to 5' and 5' to 3' exonuclease activities. The 3' to 5' exonuclease activity is the proofreading activity while the 5' to 3' exonuclease activity of the enzyme is required for the removal of primer and gap-filling during DNA replication. The 5' to 3' exonuclease activity of DNA polymerase I can replace a segment of DNA or RNA paired to the template strand. This removal of the DNA or RNA segment is called nick translation.

Completion of formation of an Okazaki fragment is followed by removal of RNA primer through 5' to 3' exonuclease activity of DNA polymerase I. The same enzyme adds deoxyribonucleotides in the gap by its polymerization activity. The remaining nick is sealed by DNA ligase.

Answer:

Performing the ischemia/reperfusion experiment using neutrophil-depleted animals and examining whether the degree of tissue damage is reduced

Explanation:

Neutrophils are one of the important component of the white blood cells. Neutrophils has the ability to phagocytose the cell and these cells first reach at the time of parasitic infections.

In case of reperfusion experiment, the neutrophil cells can be used to obtain the best results. The variables that are used in the experiment can be tested and is limited in the absence and the presence of the neutrophil cells. The tissue damage can be diagnosed by this experiment.

Thus, the correct answer is option (B).

Answer:

The chance that their child will not be able to roll his tongue will be zero.

The chances to have a child with tongue rolling ability is 100%.

Explanation:

In complete dominance, a dominant gene completely manifests over a recessive gene. If tongue rolling is a dominant trait, this means that the gene that expresses this trait is dominant over the recessive one that does not allow the person to roll the tongue.  

If the gene for tongue rolling is called T, then a person that is homozygous dominant for this trait will have the following genotype: TT. If the person is heterozygous for this trait, the genotype will be Tt. And if a person is homozygous recessive for the trait, this person´s genotype will be tt.

When two homozygous dominant individuals mate, their chances to have a child with tongue rolling ability is 100%.

This is:    

Parental)         TT   x   TT

Gametes)     T   T       T   T

Punnet Square)                  T                 T

                                T        TT             TT

                                T        TT             TT

F1)  Genotype: 100% TT, or 4/4 TT

      Phenotype: 100% Tongue rolling capable.

In complete dominance, a dominant gene completely manifests over a recessive gene. If tongue rolling is a dominant trait, this means that the gene that expresses this trait is dominant over the recessive one that does not allow the person to roll the tongue.   If the gene for tongue rolling is called T, then a person that is homozygous dominant for this trait will have the following genotype: TT. If the person is heterozygous for this trait, the genotype will be Tt. And if a person is homozygous recessive for the trait, this person´s genotype will be tt. When two homozygous dominant individuals mate, their chances to have a child with tongue rolling ability is 100%. This is:    Parental)         TT   x   TTGametes)     T   T       T   TPunnet Square)                  T                 T                                 T        TT             TT                                 T        TT             TTF1)  Genotype: 100% TT, or 4/4 TT       Phenotype: 100% Tongue rolling capable.

Answer:

The correct answer will be- Heart Attack

Explanation:

Coronary vessels like coronary arteries supply the oxygen to the heart muscle cells as they also require oxygen to perform their function.

In conditions when the cholesterol or fat or other substances gets accumulated in the coronary arteries forms a plaque in the artery.

The formation of plaque leads to the formation of the blood clot which reduces the blood flow to the heart. Due to this, the heart cells do not get enough amount of oxygen as a result of which the heart cells die.

This condition of death of heart cells is known as the Heart attack caused due to the blood clot formation.

Thus, Heart Attack is the correct answer.

Answer:

C) The mouse CFTR gene and human CFTR gene encode proteins that can serve a similar function.

Explanation:

CFTR gene encodes for Cystic fibrosis transmembrane conductance regulator protein. It is ion channel protein and conducts chloride ions across the cell membrane. Its mutation leads to cystic fibrosis which is characterised by presence of thickened mucus in lungs with frequent infections.

In the given experiment, human CFTR gene is able to function in mouse and restore the lost body functions. This is because human and mouse CFTR gene show high level of similarity due to which they code similar proteins which can function in each other's place. However this does not mean that DNA sequence of the genes is identical. There is still some difference between them because they are two different species.

In reality human CFTR gene is around 189 kb in length whereas mouse CFTR gene is around 152 kb in length. The 27 exons have very similar sequence. Most introns of human CFTR gene are larger than the mouse counterpart.

Forest: A large area covered in trees.

Taiga: A snow forest.

Tundra: A flat area with no trees.

Desert: A large, dry area covered in sand

Savanna: A grassy plain in tropical and subtropical regions with very few trees.

Grassland: A large open area covered in grass.

Chaparral: A land with vegetation that consists of shrubs and bushes with thorns.

Mixed Forest: A forest with two or more kinds of different trees.

Hope this helps!

Answer:

Option A

Explanation:

In this statement, the historical reference is used as an allusion. The speaker wants to give an indirect reference of something by mentioning the name of a person, place, thing, and any incidence be it political or historical. Here the speaker is giving reference of this incidence to deliver some hidden message through clues. The author can use other speech form such as a poem, song, phrases etc. instead of a question to deliver the same hint.

Hence, option A is correct

Answer: Option C

Explanation:

Red blood cells when places in a solution having higher concentration of solutes then the cells bursts.

The red blood cells when kept in the such of a solution bursts because of the hypotonic solution outside the cell.

The cells when kept inside hypotonic solution the solution will move from outside to inside of the cell and the cell will burst.

Final answer:

Red blood cells that burst when placed in an unknown solution indicate that the solution was hypotonic, leading to water influx and hemolysis. This osmotic imbalance is detrimental to cell integrity and is contrasted by isotonic conditions, where cells maintain equilibrium, and hypertonic conditions, where cells crenate.

Explanation:

When red blood cells are placed in a solution with an unknown solute concentration and they burst, it indicates that the solution was likely hypotonic to the cells. A hypotonic solution has a lower concentration of solutes compared to the inside of the red blood cells, leading to an influx of water into the cells due to osmosis. The increased water intake causes the red blood cells to swell and eventually undergo hemolysis, where they burst due to the inability to accommodate the additional volume within a fixed membrane surface area.

In contrast, a hypertonic solution, which has a higher concentration of solutes outside the cells than inside, would cause the cells to lose water and shrink, a process known as crenation. An isotonic solution has equal solute concentrations inside and outside of the cells, leading to no net movement of water and thus the cells remain unaffected. Understanding the effects of osmotic pressure is crucial in preserving the integrity and functionality of red blood cells in medical and laboratory settings.

Answer:

C. carbohydrate.

Explanation:

The digestion of carbohydrate starts in the mouth, where the salivary amylase converts carbohydrate in the food to maltose. This action continues through the esophagus, and when it gets to the stomach, it stops due to the acidic nature of the stomach (as the amylase works only in alkaline environment).

The maltose (disaccharides) is further broken down to monosaccharides called glucose in the duodenum. other disaccharides like sucrose and lactose are coverted to glucose + fruitose by sucrase, and glucose + galactose by lactase respectively. Carbohydrate in the duodenum are broken down to maltose by pancreatic amylase before converted to glucose.

Salivary amylase starts the digestion of carbohydrates in the mouth by breaking down starch into maltose. This process stops when the food reaches the acidic environment of the stomach.

The salivary amylase enzyme present in saliva begins the process of digestion in the mouth by breaking down carbohydrates. Specifically, salivary amylase acts on starch, which is a common dietary carbohydrate, breaking it down into smaller sugar units like maltose, a disaccharide.

The decomposition of carbohydrates by amylase continues until the food bolus reaches the stomach, where the acidic environment inhibits further action of the enzyme.

Answer:

The Broca area

Explanation:

The Broca area is the part of the brain around the inferior frontal gyrus containing the neurons which is used for speech function. This part was named after Pierre Paul Broca who discovered that that part of the brain was connected to human speech function during a study of two patients who had injury in that part of the brain.

Answer:

The similar number of offspring of each recombinant phenotype occurs as a result of Crossing over between chromosomes that are reciprocal, such that when a recombinant chromosome of one type is formed, the opposite recombinant of that same type is also formed.

Answer:

yo- yo diet

Explanation:

Yo-yo diet is a method of cyclic loss of weight gain and loss which is called as yo-yo due to the up and down motion of a yo-yo.

In this type of diet the person who is dieting first looses the weight but then again gains it and then again goes on a diet to loose the gained weight.

In this type of dieting pattern a person initially starves and maintains a hypocaloric diet to enhance the efficiency of food use however, this starvation back fires as when the person starts eating again the tendency to eat more fatty food and high caloric intake increases.

Answer:

The correct answer is 2. "the child needs these pancreatic enzymes to help the digestive system absorb fats, carbohydrates, and proteins".

Explanation:

90% of patients with cystic fibrosis get the pancreatic enzymes supplement because of their pancreatic insufficiency. These enzymes are released in the intestine and help to digest food.

The enzymes´ principal functions are:

- To digest carbohydrates, proteins, and fats;

- To help to gain weight;

- To promote the absorption of nutrients.

To get an appropriate corporal weight and an improved lungs´ functioning it is important to take the enzyme supplement with every meal. It reduces bad absorption and improves nutrition.

Final answer:

ATP provides energy to cells by releasing energy when a phosphate group is cleaved from it, which is used by the cell to perform vital functions such as muscle contraction and powering transport mechanisms.

Explanation:

The question asks which process best describes how ATP provides energy to the body's cells. The correct answer is that energy is released when a phosphate group is cleaved from the ATP molecule. This process is crucial because ATP, or adenosine triphosphate, serves as the primary energy currency in cells. It stores energy in phosphate ester bonds, and when these bonds are broken - specifically when ATP is converted to ADP (adenosine diphosphate) and a phosphate group - energy is liberated. This released energy is then used by the cell to perform vital functions, such as the mechanical work of muscle contraction, where ATP supplies the energy required to move contractile muscle proteins and to power the active transport mechanisms like the sodium-potassium pump in cell membranes.

The key to ATP's energy-providing role is the controlled release of energy stored in its phosphate bonds through a process called hydrolysis. This energy fuels a wide range of vital cellular processes.

The correct answer is A. Energy is released when a phosphate group is cleaved from the ATP molecule.

Here's a detailed explanation:

Chemical energy storage: ATP, or adenosine triphosphate, is a molecule that acts as the "universal energy currency" of cells. It stores chemical energy in the bonds between its three phosphate groups. These bonds are like springs: the more stretched they are, the more energy they store.

Energy release through hydrolysis: When a cell needs energy to power a specific process, an enzyme can break (hydrolyze) one of these phosphate bonds. This releases energy, much like releasing tension from a spring. The broken bond converts ATP into ADP (adenosine diphosphate), which has less energy stored.

Specificity of enzymes: Specific enzymes couple the energy released from ATP hydrolysis to the specific energy-requiring needs of different cellular processes. This ensures that the released energy is used efficiently and directed towards the right tasks.

Here's why the other options are incorrect:

B. Energy is released when two molecules of ATP combine: Combining two ATP molecules wouldn't release energy; it would create a larger molecule with more stored energy.

C. Energy is released when ATP is transported out of the cell membrane: ATP's energy is used within the cell, not exported. Transporting it wouldn't release energy.

D. Energy is released when adenosine binds to three phosphate molecules: Adenosine is part of the ATP molecule, but it's not the source of energy release. The energy comes from breaking the bonds between the phosphate groups.  

The correct answer is A. Energy is released when a phosphate group is cleaved from the ATP molecule.

Answer:

a. they are designed to be resistant to certain antibiotics

Explanation:

Most of the Bacteria that contain recombinant plasmids as antibiotic-resistant gene. This antibiotic-resistant gene can be used as a selectable marker.

To isolate these bacteria, you will have to inoculate and grow them in a medium containing the antibiotic. Take for example, a recombinant plasmid which has an ampicillin-resistant gene is grown in an ampicillin antibiotic medium since other bacterias present won't be able to grow in the medium due to the lack of the ampicillin-resistant gene.

Answer:

The correct answer is- A. uptake of oxygen by red blood cells

Explanation:

Red blood cell is important in transporting the oxygen from the lungs to the different body parts. During endurance activity, our breathing rate goes up so that the red blood cells carries more oxygen which is required by the muscle to generate energy during the aerobic respiration process.

Therefore if Cindy wanted to increase her stamina by taking drugs or supplements than Cindy would be attempting to increase the uptake of oxygen by red blood cells because more the uptake of oxygen more the oxygen can be present to create energy in muscles to work for long time. So the correct answer is A.

Answer:

The correct answer is- A. uptake of oxygen by red blood cells

Explanation:

Answer:

Explanation:

Physiologic changes resulting from the normal aging process place older adults at higher risk for adverse effects.

Answer:

Answer is D. Variation does not exist within a kind.

Explanation:

Linnaeus is regarded as the father of classification. This is because, his method or system of classifying and naming of organism, known as taxonomy, is still relevant up till today.

He formulated the binomial nomenclature, which is the modern system of naming organisms.

Linnaeus system includes domain, kingdom, phylum, class, order, family, genus and specie.

Final answer:

Linnaeus' concept of kinds implied that there was no variation within a species or kind, viewing each species as an unchanging ideal type.

Explanation:

Linnaeus' concept of kinds mainly referred to the constancy and the lack of variation within a kind, where each species was considered an unchanging 'ideal type'. Therefore, according to Linnaean taxonomy, individual organisms that differed from the species' ideal type were seen as deviant and imperfect. This reflects the notion that variation does not exist within a kind (D). Linnaeus thought of species as fixed and unvarying entities, unlike the modern understanding of species which acknowledges genetic variation and evolutionary change.

Answer:

False.

Explanation:

This thin, whip-like projection from the cell's body is called a FLAGELLA.

It is not only present in the human sperm, you can find it also amongst the Euglena and Chlamydomonas.

Answer: A deletion in the gene encoding the insulin receptor that removes only the cytoplasmic domain of the protein.

Explanation: The other choices are either unrelated or contradictory to the question, so this would be correct because removing a feature almost vital to the cell will most similarly simulate type II diabetes, disrupting the function of the cell, thus hindering signaling pathways.

A genetic change causing a disrupted cellular response to insulin signaling in an individual without diabetes, similar to type 2 diabetes, would likely affect the insulin receptors or glucose transporters, leading to insulin resistance and hyperglycemia.

A genetic change in an individual without diabetes that could result in a disrupted cellular response to insulin signaling, similar to that seen in individuals with type 2 diabetes, would likely involve the insulin receptors or the glucose transporters within cells. Since insulin resistance is a hallmark of type 2 diabetes, a mutation that leads to defective insulin receptors on the cell membrane, or that impairs the ability of glucose transporters to respond to insulin, would mimic the effects of this condition. Such changes would prevent cells from taking up glucose efficiently, leading to elevated levels of glucose in the blood, which is symptomatic of type 2 diabetes.

Considering the mechanism of insulin resistance in type 2 diabetes, the genetic change most likely to cause a similar phenotype would be one that disrupts the function or expression of the insulin receptor or the glucose transporter proteins. These disruptions can result in target cell resistance to insulin, preventing the normal uptake of glucose into cells and leading to hyperglycemia (high blood sugar levels).

Answer:

b. circadian rhythm

Explanation:

Circadian rhythm refers to an internal rhythm that operates during the 24-hour day. It represents the patterns of biological activity such as the sleep-wake cycle that occurs on a cycle of about 24 hours. The visual inputs from the retina to the suprachiasmatic nucleus of the hypothalamus regulate the release of melatonin. Reduced secretion of melatonin during day and increased levels during night regulate the rhythmic changes in sleep, wakefulness and body temperature. For example, as night arrives, the increased melatonin secretion stimulates sleep and lowers down the body temperature.

Answer:

The correct answer is a. they are designed to be resistant to certain antibiotics

Explanation:

Recombinant plasmids are those bacteria in which a foreign genetic material is placed for giving some addition characteristic to the plasmid. The recombinant plasmid must have origin or replication and a selectable marker. It should produce its numerous copy in its host.

So most of the plasmids have antibiotic-resistant gene as selectable marker. So the bacteria transformed with the recombinant plasmid can be isolated from other bacteria by growing them on medium containing the antibiotic that the recombinant plasmid in bacteria has.

For example, bacteria having a recombinant plasmid that contains an ampicillin-resistant gene can grow in medium having ampicillin antibiotic but other bacteria that do not have this gene can not grow.

Answer:

anecdote

Explanation:

This report would contain his journey of change in his physiology during the stint of two months during which he took protein supplements before and after his workouts.The report will reveal how he become 200% stronger after he added the supplements to his diet. Therefore, the would be an anecdote of this amazing journey of transformation.