Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1.5, Problem 3CC
What is the drawback of having only a single control system (a heater) for maintaining aquarium water temperature in some desired range?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 27-year-old assistant pool manager was electrocuted when she contacted an ungrounded
electric motor. She was performing her work duty of maintaining the pH level of the swimming pool by
adding soda ash to the water. Standing barefoot on the wet concrete floor of the pump room, she filled
the plastic drum with water, plugged in the mixing motor and placed the motor switch in the on position.
In the process of adding soda ash to the drum, she accidentally contacted the energized mixing motor
with her left hand and created a path to ground for the electrical current. She was electrocuted and
died.
Questions:
1. Is this an example of unsafe act or unsafe condition? Explain your answer.
2. What could have been done to prevent the occurrence of the fatal accident?
Explain this example of the following water quality serial dilution. Note the dilution factors and how you would calculate #’s from the incubated plates. ……A serial dilution yielded TNTC in the 1:1 plate and the 1:10 plate, 50 cfu’s in the 1:100 plate and 3 cfu’s in the 1:1000 plate . What is the concentration (CFU)/ml of the raw sample? Is water acceptable for potable or Recreational use? Explain. When do you use filtration rather than serial dilution
What was the point of having a control plate that was just exposed to water?
Chapter 1 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 1.4 - If a person eats 12 milligrams (mg) of salt in a...Ch. 1.4 - Glucose is metabolized to CO2 and water. Explain...Ch. 1.5 - What is the drawback of having only a single...Ch. 1.5 - Prob. 4CCCh. 1.6 - Students in the laboratory run an experiment in...Ch. 1 - Define physiology. Describe the relationship...Ch. 1 - Name the different levels of organization in the...Ch. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define homeostasis. Name some regulated variables...
Ch. 1 - Name four major themes in physiology.Ch. 1 - Put the following parts of a reflex in the correct...Ch. 1 - The name for daily fluctuations of body functions...Ch. 1 - Mapping exercise: Make a large map showing the...Ch. 1 - Distinguish between the items in each group of...Ch. 1 - Name as many organs or body structures that...Ch. 1 - Prob. 12RQCh. 1 - Explain the differences among positive feedback,...Ch. 1 - A group of biology majors went to a mall and asked...Ch. 1 - Although dehydration is one of the most serious...Ch. 1 - Prob. 16RQCh. 1 - You performed an experiment in which you measured...Ch. 1 - Prob. 18RQCh. 1 - Prob. 19RQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- To make 200 ml 0.4XSSC (Saline and Sodium Citrate) solution for FISH post-washing, how many ml 20X SSC solution is needed?arrow_forwardMatch the following descriptions to the tonicity adjusting method which they describe. - Cryoscopic method - White-Vincent Method - E method - Sprowl's method It is the most widely used method in adjusting tonicity by the amount of sodium chloride. This method expresses the freezing point in terms of 1% solution. This method uses a constant that denotes the volume of isotonic preparation in milliliters when 1 gram of sodium chloride is dissolved in water. This method uses a constant of 0.3 to denote the weight of the drug. This method uses the equation "V = 33.33E".arrow_forwardWhat is the reason for the decrease in the ABS value over time when measuring in the spectrophotometer?arrow_forward
- Why is it important twnaimize heat loss around the distilling head (the 3-way adapter that connects the distilling flask, thermometer, and the condenser)?arrow_forwardOn the graph that relates absorbance to flavin concentration, draw a horizontal line that starts at the point on the y-axis that corresponds to the absorbance of your unknown sample and ends at the curve you drew through your data points . Next draw a vertical line that starts at the point where the horizontal line intersected the curve and ends at the x-axis. The point where this vertical line intersects the x-axis corresponds to the concentration of flavin in your unknown sample. What was the letter on the tube with your unknown sample? What is the concentration of the flavin in your unknownarrow_forwardWhat are the advantages and disadvantages of the filter method in the analysis of water samples? Why is the incubation temperature critical for this test?arrow_forward
- How do you create a graph like the one in the picture? Here is the data from my lab. Time Concentration Mean 1 hr 100 4.7 70 6.6 50 6 30 4.2 10 0.96 1 0.08 0.1 0 control 0.08 24 hr 100 10 70 10 50 10 30 10 10 10 1 3.7 0.1 1.5 control 0.79 48 hr 100 10 70 10 50 10 30 10 10 10 1 6.96 0.1 3.4 control 1.8 A tutorial would be much appreciated or even a video that walks you through the process. Cheersarrow_forwardA 10-L stirred tank is used to cultivate mouse myeloma cells. Dry air is sparged from the bottom at 1.0 L/min to supply oxygen to the system. The gas composition at the outler is 16% oxygen, 3.5% CO2, 6.5% water vapor, and balanced nitrogen. The ambient pressure and temperature are 1 atm and 37 °C, respectively. The dissolved oxygen in the reactor is controlled at 20% of saturation with ambient air. What is the respiratory quotinent (RQ) (i.e., mole CO2 produced/mol O2 consumed)? Assume that the mole fraction of CO2 in the ambient air is negligible. The universal gas constant R = 0.082 L*atm/mol*Karrow_forwardA 10-L stirred tank is used to cultivate mouse myeloma cells. Dry air is sparged from the bottom at 1.0 L/min to supply oxygen to the system. The gas composition at the outler is 16% oxygen, 3.5% CO2, 6.5% water vapor, and balanced nitrogen. The ambient pressure and temperature are 1 atm and 37 °C, respectively. The dissolved oxygen in the reactor is controlled at 20% of saturation with ambient air. a. Assuming the reactor is at a steady-state, what is the volumetric oxygen transfer coefficient (kLa)? b. The specific OUR of myeloma cells is 5*10-11 mmol/cell*h. What is the cell concentration? c. What is the respiratory quotinent (RQ) (i.e., mole CO2 produced/mol O2 consumed)? Assume that the mole fraction of CO2 in the ambient air is negligible. The universal gas constant R = 0.082 L*atm/mol*Karrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chapter 5 Microbial Metabolism; Author: Heather Davis;https://www.youtube.com/watch?v=wH_HrsfDWZw;License: Standard Youtube License