Business

15. Which of the following conditions occurs, during expiration, in a person suttering from an asthma attack? a. the alveolar pressure is greater than during a normal expiration b. the resistance to air flow is greater than during a normal expiration c. the intrapleural (or pleural) pressure is greater than during an normal expiration d. the rate at which air exits the lung is greater than during a normal expiration e. a, b, and c Solution Ans is E In asthma there is greater resista...

Another issue that created problems getting the pathway to run in E.coli is that the PAL reaction is reversible. In fact, the PAL reaction used industrially to make phenylalanine. In order to fix this problem, Bang, et al. looked into non-plant PAL. It is known that the bacterial version of this enzyme is controlled differently and cinnamic acid, in bacteria, is used for another purpose. They selected the PAL enzyme from Strepiomyces maritimus. They did the kinetics of both the forward and ...

Assignment 6 1. The endothelium is found in the a. tunica intima b. tunica media c. tunica externa d. lumen 2. Closer to the heart, arteries would be expected to have a higher percentage of a. endothelium b. smooth muscle fibers c. elastic fibers d. collagenous fibers 3. Which of the following best describes veins? thick walled, small lumens, low pressure, lack valves thin walled, large lumens, low pressure, have valves thin walled, small lumens, high pressure, have valves thick walled, lar...

A cell needs more than water to survive and reproduce. Use the following forms of transport across the membrane to answer the questions below: Simple diffusion Osmosis Facilitative diffusion Active transport Phosphotranferase (group translocation) How does a: cell transport a lactose molecule ac across its can membrane with the concentration gradient? prokaryotic call transport a large quantity of glucose across its cell membrane? cell transport an oxygen molecule across its cell m...

#2. Nelson 7.3 which is the following: You are trying to make artificial blood cells. You have managed to get pure lipid bilayers to form spherical bags of radius 10um, filled with hemoglobin. The first time you did this, you transferred the "cells" into pure water and they promptly burst, spilling the contents. Eventually you found that transferring them to a 1 mM salt solution prevents bursting, leaving the "cells" spherical and full of hemoglobin and water when you try this? ...

11. Compare the location of the ovule in the pine and the flowering plant. 12. What is the difference between pollination and fe Solution In pine, ovule is located in the seed cones and in flowering plants the ovule is located in fruit. Pollination is the transfer of pollen from the anther to the stigma of the same or different flower whereas fertilization occurs when the pollen grain reaches the stigma producing a pollen tube, which then grows down through the style to the ovary.

Assessment, Question 22 The flight-or-flight response produces all of the following except: increased heart rate and force of contraction dilation of vessels to the digestive organs increase in blood pressure decreased urinary activity increased glycogenolysis Solution Answer: The flight-or-fight response is nothing but the physiological activity that takes place in the response of the event that are harmful which may include the threat or also the attack. From the above options the...

A self-excited shunt DC generator is rated 10 kW. 125 V, and has friction and windage losses of 1200 W and core losses of 750 W when operating at rated flux. A field current of 6.0A is required and the armature circuit resistance is 0.24 ohm. Assume the field current and machine speed arc constant. Calculate the power required to turn the generator at no load, with 125V at the generator terminals. Repeat the calculation in A) above for a separately excited generator. Calculate the power t...

Assume that the original growth curve was done using a well-aerated medium. Predict what the growth curve would look like if the culture was grown under anoxic conditions. Explain your thinking. Assume that the original growth curve was done using a rich, high nutrient medium like Luria-Bertani broth. Predict what the growth curve would look if the culture was grown in a defined, minimal salts medium (with glucose). Explain your thinking. Solution anoxic condition no growth will be ...

At the end of 2009, Extreme Fitness has adjusted balances of $800,000 in Accounts Receivable and $55,000 in Allowance for Doubtful Accounts. On January 2, 2010, the company learns that certain customer accounts are not collectible, so management authorizes a write-off of these accounts totaling $5,000. Show how the company would have reported its receivable accounts on December 31, 2009. As of that date, what amount did Extreme Fitness expect to collect? Solution ...