Bio 152 _ Spring 2024 (4)

1. List the four basic macromolecules of life:________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 2. When two monomers of a macromolecule combine they release ________ from the reactive groups that are involved in the bond (joining). This process is called? _____________________________________________________

b.      What is the most effective buffer against bases? ____________________________________________________________________________________________________________________________________________________________________________

TOPIC: Precipitation of Proteins by Alkaloidal Reagents 1. In what way can alkaloidal reagents precipitate proteins? ____________________________________________________________________ ____________________________________________________________________ 2. In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence for your answer? ____________________________________________________________________ ____________________________________________________________________

TOPIC: Precipitation of Proteins by Strong Mineral Acids Guide Questions: 1. How can strong acids denature proteins? ____________________________________________________________________ ____________________________________________________________________ 2. Digestion of proteins in humans begins in the stomach where the environment is very acidic. Explain the significance of the stomach’s acidity to protein digestion. ____________________________________________________________________ ____________________________________________________________________ 3. Will the precipitate formed after treating egg white with strong acid dissolve or not in addition of excess acid? Explain why. ____________________________________________________________________ ____________________________________________________________________

Consider the scenario below:   A 40-year-old woman was rushing to get to her workplace before office time. What do you think would have happened to her blood's pH? _________________________________________________________________ _________________________________________________________________     What would be the effect on pH once she reaches her office, but continues to breathe hard for a few minutes? __________________________________________________________________ __________________________________________________________________ Why? __________________________________________________________________ __________________________________________________________________ A weak acid causes her issue. She ingested far too much aspirin, also known as acetylsalicylic acid, and ended up in the emergency room (ER). The pH range within which humans can survive is between pH 6.8 and about pH 8.0. The woman's pH is outside of this window. What do you think would have happened to her?…

Buffer

TOPIC: Precipitation of Proteins by Heavy Metal Salts 1. In what way can ingestion of heavy metals, such as lead and mercury, be detrimental to the proteins in your body? ____________________________________________________________________ ____________________________________________________________________ 2. Why is egg white used as an antidote for lead and mercury poisoning? ____________________________________________________________________ ____________________________________________________________________

topic about : precipitation of proteins by heavy metal salts 3. Will the precipitate formed after treating egg white with strong acid dissolve or not in addition of excess acid? Explain why. ____________________________________________________________________ ____________________________________________________________________

nsert Format Arrange View Share Window Help Biology Lab Exam 1 Sp 21 目 125% v Collaborate Insert Table Chart Тext Shape Media Comment View Zoom Add Page 3. (1 point) Show the answer to the following question in correct significant figures. 10.219 + 3.12 = 4. (7 pts) True or False. Circle the correct answer. True or False. A blank used to zero of spectrophotometer always contains just distilled water. True or False. The mode is the most commonly occurring number in a data set. True or False. One milliliter (mL) equals 1,000,000 microliters (µL). True or False. Peroxidase activity increases when the enzyme is boiled True or False. Enzymes are carbohydrates. True or False. Denaturing involves an enzyme breaking down into individual amino acids. True or False. Hydroxlyamine is a competitive inhibitor of peroxidase. 5. (1 point) How many µL (microliters) are in 2.32 L? Show your work for full credit. 6. (1 pts) Convert 1,745 mm tọ Km. Show your work for full credit. MAR étv 9. MacBook Air

1. Define the term oxygen saturation. (1 Mark)__________________________________________________________________________________________________________________________________________________________________________________________________________________2. List two causes that can contribute to a low O2 sat reading. (2 Marks)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3. Define the term “continuous oxygen therapy” and explain why it is beneficial for peoplewith chronic breathing difficulties. (2…

1.      Differentiate the following: a.      pH from pOH ____________________________________________________________________________________________________________________________________________________________ b.      Ka from Kb ____________________________________________________________________________________________________________________________________________________________ c.      Pka from Pkb ____________________________________________________________________________________________________________________________________________________________   d.      Kw from pKw ____________________________________________________________________________________________________________________________________________________________ 2.      What is the importance of buffer systems in the human body?…

Förmat Tools Add-ons Help insert Last edit was S.. 100% Normal text Verdana 10 3 4. 6 11 Spaced practice question: Which of the following statements is accurate concerning respiratory alkalosis? During metabolic alkalosis the pH value is below 7.35 During respiratory alkalosis the respiratory system would increase the breathing rate. During respiratory alkalosis the urinary system would reabsorb bicarbonate ions. During respiratory alkalosis the urinary system would compensate by secreting bicarbonate ions into the urine. During respiratory alkalosis the respiratory system would decrease the breathing rate. tv A Aa

Give correct typing answer with explanation and conclusion  A student in Biol 207 needs to make 150 ml of a 1.2% gel. They should weight out_______ of _________ in _______ml of _________.

Direction: Read and analyze the following laboratory experiment and answer the following question. PART 3: PLASMOLYSIS Materials: safety goggles, red onion, dropper, slides & cover slips, tweezers/ forceps, compound microscope, iodine, small knife, water, salt (5% and 10% solution) Methodology: 1. With goggles on, carefully cut the onion into wedge shaped pieces using a knife. 2. Use an eye dropper to place a drop of water in the center of a microscope slide. Use the tweezers to peel a thin layer of skin tissue from the thick part of the onion wedge and place it in the center of the microscope slide. 3. 4. 5. Add a drop of water and a drop of iodine over the onion tissue on the slide. Carefully lower a cover glass slip at an angle on the stained tissue to allow air bubbles to escape. 6. Examine the prepared slide under the compound microscope at 100X magnification. 7. Record what the cells look like. 8. Prepare a 5% salt solution by adding 5 grams of salt (measure with balance) per 100…

II. EXPERIMENTS A. DIFFUSION WITHOUT A MEMBRANE (Safety goggles must be worn) 1. Diffusion of a solid in a liquid a. Procedure Drop a very small quantity of methylene blue crystals into a 400 ml beaker of still water. The beaker should not be disturbed in any way for the duration of the experiment. Observe the beaker at the beginning of the experiment and again at 15-minute intervals for a total of 45 minutes. b. Results Use the beaker drawings below to illustrate the appearance of the beaker contents at 15 minute time intervals. Time=0 minute 72 Time 15 minutes Might toy ccccccccc

My data is attached, please  1.) Create a scatter chart with all the data then **Using your graph - predict how many seconds it will take to dissolve an Alka-Seltzer® tablet in 200 mL of water at the following temperatures. Use the exponential trend line to find the function used in predicting the time. If needed, please refer to the Introduction to Graphing manual for guidance. 15°C, 35°C and 60°C

Order: Ceclor suspension 250 mg orally every 8 hours Supply: Ceclor suspension 125 mg/5 mL Wt: 50 pounds = _______________________kg SDR- 6.4 to 13.5 mg/kg every 8 hours Calculate the SDR Is it safe? _________________ If safe, what would you administer. _____________ If not safe, what would you do? ___________________________________

You want to make 500 ml of an isotonic glucose solution to infuse into a patient. How many grams of glucose do you need? _______g

Tables A & B. Ninhydrin and Biuret Reactions Samples TESTS Ninhydrin Biuret 1. Glycine 2. Casein 3. Albumin 4. Gelatin 5. Peptone 6. distilled water

Downloads/OCR ExamBulder e 4um Fig. 17.2 i) The diameter of the Kupffer cell in the image is 9.1 cm. Assuming it is spherical, caloulate the actual volume of this cell. Give your answer to four significant figures Show your working GOOD

Question:- tube 1: 5ml milk, 10 drops phenol red, 5 ml distilled water tube 2: 5ml milk, 10 drops phenol red, 5 ml distilled water, bile salts   * why are 5ml of water added to tubes 1 & 2?

Recap: If we do not save water now, soon we will be left with no safe water for consumption. (d) (e) W 1. Water is essential for life as all living organisms need it. 2. Water plays an important role in the working of our body. 3. The body loses water in the form of sweat, urine and while breathing. 4. Water is useful to us as it can dissolve many substances in it. Polluted water has many inpurities, like different salts, dirt and germs present in it. Water can be cleaned by the methods of sedimentation and decantation, filtration, boiling and chlorination. 7. Drinking water should be cleaned to kill disease causing germs present in it. 8. Water is precious, it should be conserved. 5. 4. Nam 6. (a) (b) (c) (d Exercises 5. 1. Tick () the correct option: is not soluble in water. (a) (1) Salt (ii) Sugar (iii) ( Sand (iv) Ink (b) is soluble in water. (i) Chalk (ii) Ink (iii) Sand (iv) 6tone (c) Sea vater is unfit for drinking due to presenceof large amounts of dissolved: (1) nitrogen (ii)…

Direction: Read and analyze the following laboratory experiment and answer the following question. PART 2: CARROT POTATO LAB Materials: 6 potato chunks, 6 carrots, 6 sucrose solutions (0m, 0.2m, 0.4m, 0.6m, 0.8m & 1.0 m), plastic cups, and paper towels Methodology: 1. Safety: Wear goggles while completing this lab. 2. Slice a carrot and potato into discs that are approximately 5 cm thick. 3. Use a cork borer to cut the carrots and potatoes. Do not include any skin on the cylinders. You need four apple and potato cylinders for each solution. 4. Keep a carrot and potato cylinders in a covered container until it is your turn to use the balance. 5. Determine the mass of the four cylinders together and record the mass. Put the four cylinders into the plastic cup container. 6. Label the containers with the color of the solution and your initials. 7. Pour the colored solution into the containers and cover with plastic lid. 8. Let stand overnight. 9. Remove the cores from the beakers, blot…

f. What is the temperature inside the laboratory refrigerator? 8- What is the temperature inside the laboratory freezer? h. Your choice: i. Your choice: Your choice: 3 Return the materials to the designated location. Thoroughly clean your glassware, and clean and disinfect your laboratory station. Check Your Understanding- 3.1 Describe the difference between estimating the volume of a fluid in a graduated cylinder made of glass compared with one made of plastic. 3.2 Why is taring a balance important? 3.3 Liquid nitrogen is nitrogen cold enough to exist in the liquid form. It has a boiling point of -320.4°F. Convert this value to degrees Celsius.

Cell Homeostasis Virtual Lab Place beaker "A" on the lab table and fill it with 1000 mL water from the graduated cylinder. RED! APODA А B C 0.00. E Please click here or on the image above to go to and start the the online lab exercise titled, "Cell Homeostasis Virtual Lab"

Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the liquid waste water. How is the activated sludge removed? Why does the treatment facility add chlorine to the water? What is the purpose of aerating the water before it is released?

Match the common laboratory scenarios to the correct buffer required using the guide below. Molecule pKa Value(s) Acetic acid 4.8 Carbonic acid 6.1, 10.2 Citric acid 3.1, 4.8, 5.4 HEPES 7.5 Phosphoric acid 2.1, 7.1, 12.3 TRIS 8.3                                                                                   Mammalian cells require a pH of about 7.4 for cell and tissue culture experiments.                                                                                   Elution of remaining molecules from a cation exchange column requires washing with pH 10 buffer.                                                                                   Dissolution of lysozyme requires pH 3 buffer to maintain activity.                                                                                   Elution of remaining molecules from an anion exchange column requires washing with pH 2 buffer.…

witj the following imformation create figures and explain the results

ASAP. NOTE: ANSWER ALL THE SUBQUESTIONS. CHOOSE THE ANSWER FROM THE FOLLOWING CHOICES: Cohesion High Polarity High Heat of Vaporization Lower Density of Ice High Specific Heat Adhesions   1.1. It is the property of water which is responsible to the insulation of the lower level of the bodies of water during winter season, protecting living organisms on it.  1.2. It is the property of water which is responsible for the capillary action that allows its transport to elevated places, as well as to very narrow channels such as blood vessels. 1.3. It is the property of water which is responsible for the constant internal temperature considering that it will require thousands of heat to raise the temperature. 1.4. It is the property of water which is responsible to the dissolution of many substances introduced to it.  1.5. It is the property of water which is responsible to the cooling effect we experience whenever we are perspiring after physical works. It is the property of water which is…

Buffers

2. Describe the structures of albumin and gelatin. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 3. What is the importance of knowing the amino acid composition of proteins? ____________________________________________________________________ ____________________________________________________________________

Fluid Description Examples

LEARNING TASK 9: DIRECTIONS: Read carefully the sentences. Then identify the word being describe in each sentence. Write your answer on the blank provided before each number. 1. It is the amount of solute present in a given quantity of solvent. 2. It is the total amount spent for goods or services including money and time and labor. 3. It is the cost of raw ingredients. 4. It refers to the combined costs of raw material and labor incurred in producing goods 5. It is a material that allows molecules of one kind to pass through it but prevents the passage of other kinds of molecules. 6. It refers to the homogenous mixture of substances with variable composition. 7. It is a solution which has a uniform composition and property. 8. Is the normal range in the percentage of food cost. 9. It is a solution of salt and water wherein fish is soaked and cooked before finally smoking it. 10. It is the process of a solute dissolving in another solute.