Which statement below is false about the probability of the absorption of a weak base from thefollowing data? pka 4.5, stomach pH 2.5, small intestine pH 7.5.O the substance will be mostly ionized in stomachO the substance will be mostly non-ionized in the intestinethe substance can be absorbed both in stomach and small intestineO the ratio of ionized and non-ionized substance will not favor absorption in stomachthe ratio of ionized and non-ionized substance will favor absorption in intestine

Acid is a compound that donates proton and base is a compound that accepts proton. The strength of…

Answered: Which statement below is false about…

Health Safety And Nutrition F/Young Child

9th Edition

ISBN:9781305144767

Author:MAROTZ

Publisher:MAROTZ

Chapter13: Nutrients That Provide Energy (carbohydrates, Fats, And Proteins)

Section: Chapter Questions

Problem B5CR

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The pH of human stomach acid ranges from 1.0 to 3.0, whereas a healthy esophagus has a pH of approximately 7.0. In gastroesophageal reflux disease (GERD), often called acid reflux, stomach acid flows backward from the stomach into the esophagus. Repeated episodes in which esophageal pH goes below 4.0, considered clinical acid reflux, can result in bleeding ulcers and damage to the esophageal lining. The data in the Figure, from a patient with GERD, show esophageal pH during a sleeping reflux event. How many minutes does it take to go from the peak of the reflux event (when pH is most acidic) to when the reflux event is over? Source: Based on T. Demeester et al. 1976. Patterns of gastroesophageal reflux in health and disease. Annals of Surgery 184:459469.
Use a calculation based on the pH partition model to determine the likelihood that a weakly acidic drug of pKa= 3.0 will be absorbed passively from the stomach (pH = 2.3) or from the small intestine (pH = 5.0). The pH of the blood is 7.4 .
If a person's urine contains unusually high concentrations of urea, which one of the following dietshas he or she probably been eating recently?A) High carbohydrate, very low proteinB) Very high carbohydrate, no protein, no fatC) Very very high fat, high carbohydrate, no proteinD) Very high fat, very low proteinE) Very low carbohydrate, very high protein
In general, smaller animals eat __________ total food than larger animals in a single day, and the relative proportion of food they need to metabolize per unit number of cells is ________. A. more; equal B. less; greater C. less; smaller D. more; greater E. less; equal
A person consumes 100 micrograms of a tracer chemical. Assume that the person is able to collect allof the tracer in their urine (and therefore measure the amount that has come out of the body), as wellas the concentration in the blood, as a function of time (see table below).c is the value of V that you determined equal to the blood volume of the person? Does this makesense to you? If not, what does V represent?
Carbohydrates and lipids are composed of the same chemical elements, but in different proportions. Both are used as energy sources for cell metabolism. Which type of molecule has the higher calorie content per gram. Explain..
The activity of pepsin was measured at various pH values. The temperature and the concentrations of pepsin and substrate were held constant. The following activities were obtained: pH activity 1.0 0.5 1.5 2.6 2.0 4.8 3.0 2.0 4.0 0.4 5.0 0.0 Plot a graph of the pH dependence of pepsin activity. Based on the graph what is the optimum pH? Predict the activity of pepsin in the blood at pH 7.4.
Excessive vomiting can to lead to alkalosis, as the gastric glands get more active to replace the gastric juice lost from the stomach lumen. Select ALL of the following that will occur to compensate for this alkalosis (ie, to keep pH stable): a). breathing rate goes down b). kidneys make less HCO3- for blood c). kidneys secrete less H+ d). hyperventilation
Predict the nutrients present in the following food samples. Write POSITIVE if the nutrient is present and NEGATIVE if it is absent. Food sample(s) calcium carbohydrate protein fat Cooked rice Dried dilis Cooked egg white Cooked egg yolk Potato
1. How does Rashamel’s current sodium intake compare with the AI? Answer: 2. Which five foods provide the most sodium? Suggest a substitution for each that would reduce his sodium intake to 2300 mg or less. Answer: Rashamel does not consume enough fruits, vegetables, or low-fat dairy products to meet the recommendations of the DASH Eating Plan for a 2600-kcal diet (see Figure 10.18b: page 403 textbook). 3. Suggest foods that Rashamel could add to his diet to meet these recommendations. Answer: Adding foods to meet the DASH recommendations will increase Rashamel’s calorie intake. 4. What could Rashamel eliminate from his diet to reduce his calorie intake to about 2600 kcal while still meeting the DASH recommendations. Answer:
A sheep consumes 2 kg DM of feed containing 75 g N/kg. The sheep excretes 60 g N in the faeces and 20 g N in the urine, what is the N-balance? Comment on the answer relating it to the domestic farm animal.
calculate the amount of that food that you would need to ingest for it to be fatal to a human assuming there is a 5 l of blood in the human body is this an amount that you need to be concerned about? explain amount needed: 5ml Final pH: 5.8

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