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BE 4303 Chapter : BE Lab Report 2

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azuremammoth471
15 Mar 2019
School
LSU
Department
Biological Engineering
Course
BE 4303
Professor
All

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Document Summary

The purpose of this lab assignment is to create a histogram from the given data, one- way commuting distances of workers in downtown dallas, using minitab. Minitab is a program that assists solving statistical problems, and is known to be more user friendly than microsoft. A histogram is a graph that shows a frequency of data points in a set, and is helpful in presenting frequencies of large data sets. The materials necessary for this lab are the given data, a computer, and the minitab program. To create a histogram in minitab, the data must first be put in a single column with no commas and appropriate headings. Next, click on the graph tab and select histogram", and. Under the graph variables", select the column in which the data was placed, and add labels by clicking on the labels" tab. After selecting ok", the histogram should appear in a separate window.

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Related Questions

Cell Membranes Lab Report

  1. Diffusion

  1. Compare the following terms: solvent, solute, andsolution.

  1. Go to Lab, Section I, Exercise 1 to explore the factorsinfluencing the rate of diffusion and complete the following:

  1. Predict how molecular mass and temperature may affect theoutcome of this experiment.

  1. Record the data from information in the Lab in the tablebelow.

Time

(min)

Diameter (mm)

5°C MB

5°C PP

23°CMB

23°C PP

0

15

30

45
  1. Construct a line graph of the data from the table above. Yourgraph should include labeled axes, units, and a legend indicatingwhich treatment is presented. Sign, date and prepare an image ofyour graph and include it with this lab report.
  1. Osmosis

  1. Go to Lab, Section II, Exercise 2 to view a demonstration ofosmosis and answer the following questions:

  1. Describe the net movement of water in osmometer 1.
  1. How is the movement of water molecules related to theconcentration gradient of the solution?

  1. Go to Lab, Section II, Exercise 3 to observe the effect ofsolute concentration on the rate of osmosis. Answer the followingquestions:

  1. Was the net movement of water in bags 1 to 4 into or out of thebags?
  1. Explain the results from bags 4 and 5.
  1. Selective Permeability of Membranes

  1. Go to Lab, Section III, Exercise 4 to learn about theimportance of selectively permeable membranes, then complete thetable and answer the following questions:

Contents of Beaker

0 Min

30 Min

Starch

Chloride ion
  1. Which substances diffused through the dialysis membrane?

  1. How does dialysis tubing model the selective permeability of aplasma membrane?
  1. Tonicity

  1. Go to Lab, Section IV, Exercise 5 and 6 to observe plasmolysisin Elodea cells and tonicity in red blood cells. Summarizethe concept of tonicity using blood and Elodea cells asexamples. Your description should incorporate these terms: turgid,plasmolysis, hemolysis, and crenation.

Cells

Isotonic Solution

Hypertonic Solution

Hypotonic Solution

Elodea

RBC

  1. Based on your previous work, reproduce the table below and drawan illustration of a single cell in each box. Include arrows toshow the direction of water flow relative to each cell and dots tosymbolize solutes. Sign, date and prepare an image of your drawingand include it with this lab report.

Cells

Isotonic Solution

Hypertonic Solution

Hypotonic Solution

Elodea

RBC

Summary Questions

  1. Compare diffusion and osmosis. Give an example of each.

2. In which direction will osmosisoccur if a 15% sugar solution is separated from a 25% sugarsolution by a selectively permeable membrane?

3. Why did osmosis, but not diffusionof sucrose molecules, occur across the dialysis membrane containing20% sucrose solution?

4. You are having a party and thecelery is limp. What might you do to make the celery crisp (turgid)again? What will occur in the cells?

5. A small amount of fertilizer(mineral salts) will stimulate plant growth, but over fertilizationcan kill plants? Why?

6. Michael adds sugar to his coffee.Explain what in this drink is the solvent, solute, and solution.

7. You add a cube of sugar to yourdrink. How could you speed up the diffusion of sugar moleculeswithout stirring?

8. How is dynamic equilibriumestablished within a solution?

Lab 1 – The digestive system and food safety

Scenario/Summary

One of the first topics that we need to explore is our digestive tract. Each step of digestion has its own function. Chewing, for example, increases the surface area of food particles (physical digestion) so that the enzymes in the mouth can start breaking the nutrients down (chemical digestion). Review the two links and complete the lab assignment stated below.

Deliverables

First examine the interactive links provided and then follow the steps below. The assignment should

be two pages maximum, double spaced, 12-point font, and have one-inch margins with standard

APA referencing. Lab reports are to be written in Microsoft Word and submitted for grading.

Lab Steps

Part 1

There are several parts to this Lab. Part 1 consists of listing all of the parts of the digestive system with either a list or photo. Many people take a screenshot and use it for Part 1. Feel free to also list the parts as well if you cannot figure out how to take a screenshot.

Part 2

Part 2 technically consists of two parts. The first one includes describing the location of each body part. For example, the appendix is located on the right side of the body under the ascending colon. Another way to do this part would be to write out the parts and put a location/description next to it. The second part of Part 2 for this section is to describe the manner in which you will retain the information of where each body part is located. An example would be, "I will remember the location of each body part by reviewing the photo and memorizing each location." Some classmates develop interesting methods of memorizing where all of the parts are located, like using mnemonics. Feel free to be creative.

HELP ON ECOLOGY LAB REPORT PLEASE!!!

- The AIM of this lab exercise: Does Eastern Mosquitofish (Gambusia holbrooki) population structure differ with season?

- You will compare population structure in an FIU pond from February 2018 (previous semester) with the data that you collect this semester (September 2018).

- CREATE HYPOTHESIS ABOUT POPULATION STRUCTURE (HELP PLEASE)

(HELP PLEASE) Include at least one paragraph ON THE key points of comparison between the life tables. Include the major results for population structure, even if no difference is found! Do these populations differ with respect to optimal age of sexual maturity, R0, G, and r?

FEBRUARY 2018 CURRENT RESULTS

Age Class (days)
x		 Sample/ Age
s(x)		 Number/ Age
n(x)		 Survival Rate
1(x)		 Fecundity b(x) Offspring/Ind 1(x)*b(x)

Age Weighted Fecundity 1(x)*b(x)*x
0 24 120 1 0 0 0
30 39 96 0.8 0 0 0
60 19 57 0.475 0 0 0
90 21 38 0.317 24 7.608 684.72
120 8 17 0.142 27 3.834 460.08
150 5 9 0.075 29 2.175 326.25
180 2 4 0.033 32 1.056 190.08
210 0 2 0.017 0 0 0
240 1 2 0.017 0 0 0
Sum 120 R0

14.673 Offspring
G 113.209 Days
r

0.024 Ind/ Days

Optimal Age for Sexual Maturity

 120 Days

SEPTEMBER 2018 RESULTS:

Life Table
Age class (days) Sample/ age class Number/ age class Survival rate Fecundity Offspring/ individual Age-weighted fecundity
x n(x) n(x) l(x) b(x) l(x)*b(x) l(x)*b(x)*x
0 9 150 1 0 0 0
30 12 141 0.94 0 0 0
60 26 129 0.86 0 0 0
90 29 103 0.687 24 16.48 1483.2
120 33 74 0.493 27 13.32 1598.4
150 18 41 0.273 29 7.93 1189
180 16 23 0.153 32 4.91 883.2
210 7 7 0.047 0 0 0
240 0 0 0 0 0 0
Sum 150
R0 42.63 offspring
G 120.89 days
r 0.03 individuals/ day
Optimal age for sexual maturity 120 days