Heart Neck Vessels Guided Reading (1)

Which of the following parameters do not substantially increase with acute, exercise intensity? Select one: a. Diastolic blood pressure b. Heart rate c. Cardiac output d. Systolic blood pressure

1. Penicillin is hydrolyzed and thereby rendered inactive penicillinase, an enzyme present in some penicillin-resistant bacteria. The molecular weight of this enzyme in Staphylococcus aureus is 29.6 kilo Daltons (29.6 kg/mole or 29,600 g/mole or 29,600 ng/nmole) The amount of penicillin hydrolyzed in 2 minute in a 10-mL solution containing 109 g (1 ng) of purified penicillinase was measured as a function of the concentration of penicillin. Assume that the concentration of penicillin does not change appreciably during the assay. [Hint: Convert everything to the same concentration terms] Show all calculations and include spreadsheets and graphs to determine Km, Vmax and kcat for this enzyme. Make sure your final answers have correct units. [Another hint: Note that [S] and amount hydrolyzed are already in concentration terms. So you don't need to worry about the volume for calculating [S] and V. ] Penicillin concentration (microM) Amount hydrolyzed (nanoM) 1 110 3 250 5 340 10 450 30 580…

C. Biosensors are considered point-of-care analytical devices that can make diagnoses faster. One of the most widely used commercially is glucose biosensors (amperometric type). The schematic diagram of the first-generation glucose biosensor is shown below. Explain the theory behind this biosensor and how you generate the measurement results. Glucose biosensors (amperometric type) D-glucose ENZYME (OX.) Oxygen D-gluconolactone ENZYME (Red.) Hydrogen peroxide Platinum electrode

Why is the glucose assay one of the most common analytical test performed in clinical chemistry.

A red blood cell has been placed into each of three different solutions. One solution is isotonic to the cell, one solution is hypotonic to the cell, and one solution is hypertonic to the cell. Sort each beaker into the appropriate bin based on the cell's reaction in each solution. Drag each item to the appropriate bin. • View Available Hint(s) Reset Help Hypertonic Isotonic Hypotonic

[4cde] c. Calculate for the mass of struvite that can be formed in the given urine sample. d. Given that the specific gravity of struvite is 1.7, determine if the amount of struvite in c can pass through the kidney. Note: less than 6mm diameter urolith can pass through the kidney. Assume that the urolith is spherically shaped. e. Using your answer in c, calculate for the number of phosphate ions in the sample.

How do microorganisms such as bacteria eliminate harmful reactive oxygen species?

Present the pertinent chemical equations involved in the analysis of dissolved oxygen concentration in a real water sample using the Winkler Method

Read and interpret the following information using the following abstract from a scientific journal article. In 2-3 sentences, summarize what you understand from this research

This pre-analytical variable can have an effect on chemistry tests which are read visually by spectrophotometry:   Question 8 options:   all answers are correct   icterus   lipemia   hemolysis

Absorbed from the intestines into the blood, nitrites (NO2-) interact with the hemoglobin of the blood and block its respiratory function, turning part of the hemoglobin (HbFe2+) into methemoglobin (HbFe3+), unable to transfer oxygen from the lungs to tissues. With the formation of a large amount of methemoglobin, oxygen starvation of tissues occurs, which can cause damage to the central nervous system. 10 to 20 % - of methemoglobin (HbFe3+) - asymptomatic cyanosis, 20 to 50% of methemoglobin (HbFe3+) -hypoxia develop, > 50% of methemoglobin (HbFe3+) - the person will die. The body weight of the average person is 60 kg. Blood mass averages 8% of a person’s body weight; blood density ρ = 1,050 g/cm3, the hemoglobin (Hb) content in it is 14 g per 100 ml. molecular weight of hemoglobin 65-68 kg/mol (use 68 kg/mol for calculation). Assume that 1 mole of hemoglobin reacts with one mole of nitrite ion to form 1 NO molecule: HbFe2+ + NO2- → HbFe3+ + NO will a 290 mg dose of sodium nitrite…

doug began preparing laboratory surface disinfectant from chlorine bleach. he put on a chemical resistant apron and gloves and then removed the bleach container from the special chemical cabinet. he carefully placed the container on the laboratory benchtop and began to add the chlorine bleach to distilled water. nearby workers began complaining of burning eyes. doug was reprimanded by the supervisor. Explain why.

Another general principle of physiology states that physiological processes are dictated by the laws of chemistry and physics. Give at least two examples of how this principle is important in understanding the processes of absorption and secretion in the GI tract.

what is delta G for CH4 + 2O2=CO2 +2H2O delta G Ch4=-50.7kJ/mol, delta G H2O=-237.4, delta G O2=0, delta G CO2=-394.4

In biological systems, an ACTIVE transport process is one in which an important chemical component is moved from where it is __________ in concentration, to where it is ___________ in concentration.  Meanwhile, a PASSIVE transport (or diffusion) process is one in which an important chemical component moves from where it is ____________ in concentration to where it is __________ in concentration. Of the two above processes,  transport does not require energy to occur. A FACILITATED transport process is a form of ______________ transport, where an important chemical component moves with the aid of a channel or similar structure.  According to the course lectures, Zoom sessions, course lecture notes, and/or assigned course readings, one specific example of a facilitated transport structure in the cell membrane is _____________  , which aids in the movement of a particular chemical component called __________ .

I need help with this question and I know have two parts, but it counts as one question. Please respond as soon as possible.

Dangerous Paint Stripper Jessica has a summer job working for the city parks program. She has been using a cleaner called “Graffiti Gone” to remove graffiti from the bathrooms. She has to take a lot of breaks, because the chemical makes her throat burn. It also makes her feel dizzy sometimes, especially when the bathrooms don’t have very many windows. On the label, she sees that the cleaner has methylene chloride in it. She feels like she’s managing to get the work done, but she is worried about feeling dizzy. She wants to find out more about this chemical, what harm it can cause, and whether there are safer ways to do this work. Questions for following story. 1. What went right in this situation? 2. What went wrong in this situation? 3. What steps should be taken in this workplace to make sure employees are better protected and prepared the next time?

The qrxn was -332 cal. What is this in kcal? Use the equivalence of 1 kcal = 1000 cal and dimensional analysis to solve. O a. -332 cal x 1000 cal 332000 kcal %3D 1 kcal 1 kcal 1000 cal Ob. -332 cal x 0.332 kcal 1 kcal 1000 cal C. -332 cal x = -0.332 kcal d. -332 cal x 1000 cal 332000 kcal %3D 1 kcal The heat of the reaction, AH,rxn, is found by dividing the qrxn by the moles of zinc used, nzn- AH xn %3D nzn What is the AH,xn if qrxn = -0.332 kcal and n = 0.0084 moles? O a. 40 kcal/mol O b. 40 cal/mol O c. -40. kcal/mol

I Part 3 Discussion questions: Please answer in less than 2 paragraphs (20 points) 1. The FDA scientists have published 2 papers on the subject of sunscreen dermal absorption. What is different between the publications? The editorial page in the journal JAMA (Journal of American Medication Association) might help you answer this question.

ostlaboratory Questions in 4 days Unanswered Postlab Question 7.4 Homework Unanswered Which is soluble when hot water is added and why? AgCl(s), PbCl₂(s), Hg₂Cl₂(s) HE Unanswered B I A+ X₂ X² I MacBook Air Ω· Ξ 0/4 answered 66 X

The role of calcium ions (Ca4) in neural signal transmission is to cause the release of neurotransmitter molecules from sodium-potassium pumps in the presynaptic neuron. repolarize the postsynaptic cell after transmission has been completed. increase the activity of the sodium-potassium pumps in the presynaptic cell cause the release of neurotransmitter molecules from synaptic vesicles in the presynaptic neuron.

d. NH₂ 2) LIAIH4, then H₂O workup

Please answer within 20 minutes.

A1L TPN order is written for 400 mL 10% Dextrose, 300 mL 4.25% amino acids, and a total of 37 mL of additives. How much sterile water for injection should be added? a. 55 mL b. 137 mL c. 163 mL d. 263 mL

The full form of GLP is ... ? a. Good Leader Practice b. Good Laboratory Practices C. Good Lab Practice d. Good Lab Promotion

I only need: OMEGA SHORTHAND NOTATION Classification: ( SFA, MUFA, PUFA) Classification: ( ESSENTIAL OR NON ESSENTIAL)