UMUC Biology 102/103 Lab 5: Meiosis, Lab 6: Taxonomy, Lab 7: Ecological Interactions

BIO 103 Lab 5: Meiosis, Lab 6: Taxonomy, Lab 7: Ecological InteractionsBIO 103 Lab 5: Meiosis, Lab 6: Taxonomy, Lab 7: Ecological Interactions
Lab
5: Meiosis
INSTRUCTIONS:
·
On
your own and without assistance, complete thisLab
5 Answer Form electronically and submit it via theAssignments Folder
by the date listed on yourCourse Schedule (underSyllabus).
·
To
conduct your laboratory exercises, use the Laboratory Manual that is available
in the WebTycho classroom (Reserved Reading or provided by your instructor) or
at the eScience Labs Student Portal. Laboratory exercises on your CD may not be
updated.
·
Save
yourLab5AnswerForm in
the following format: LastName_Lab5
(e.g., Smith_Lab5).
·
You should
submit your document in a Word (.doc or .docx) or Rich Text Format
(.rtf) for best compatibility.

Experiment 1:
Following chromosomal DNA movement
Procedure
Meiosis I
Prophase
I— see other attached page

Metaphase
I— see other attached page

Anaphase
I— see other attached page

Telophase
I— see other attached page

Meiosis II
Prophase
II— see other attached page
Metaphase
II— see other attached page
Anaphase
II— see other attached page
Telophase
II— see other attached page

Questions
1.
What is the state of
the DNA at the end of meiosis I? What about at the end of meiosis II?
2.
Why are chromosomes
important?
3.
How are Meiosis I and
Meiosis II different?
4.
Name two ways meiosis
contributes to genetic recombination.
5.
Why do you use
non-sister chromatids to demonstrate crossing over?
6.
How many chromosomes
were present when Meiosis I started?
7.
Why is it necessary to
reduce the chromosome number of gametes, but not other cells of an
8.
If humans have 46
chromosomes in each of their body cells, determine how many chromosomes you
would expect to find in the following:

9.
Investigate a disease
that is caused by chromosomal mutations.
When does the mutation occur?
What chromosome is affected?
What are the consequences?

Lab 6: Taxonomy
INSTRUCTIONS: ·
On your own and without assistance, complete thisLab 6 Answer Form
electronically and submit it via theAssignments Folder by the date listed on yourCourse Schedule (underSyllabus).·
To conduct your laboratory exercises, use the Laboratory
Manual that is available in the WebTycho classroom (Reserved Reading or
provided by your instructor) or at the eScience Labs Student Portal. Laboratory
exercises on your CD may not be updated.·
Save yourLab6AnswerForm in the
following format: LastName_Lab6 (e.g.,
Smith_Lab6).·
You should submit your document in a Word (.doc or
.docx) or Rich Text Format (.rtf) for best compatibility.Experiment 1: Classification of Common ObjectsQuestions1. Did
you find that the items grouped together as you worked down the flow chart had
similar characteristics in terms of their appearance? What about function?2. Do
you feel that the questions asked were appropriate? What questions would you
have asked? What objects would be grouped together with your system?.3. Pick
10 household items (e.g. spoon, book, paper clip, etc.) and design a taxonomic
classification system to categorize them, similar to the one in Figure 2.4. Can
you devise a different classification system for the objects used in this
experiment that would distinguish each in as many, or fewer steps?.Experiment 2: Classification of OrganismsTable
2: Key Characteristics of Some Organisms

Organism

Kingdom

Defined Nucleus

Mobile

Cell Wall

Photosynthesis

Unicellular

E. coli

Bacteria

Protozoa

Protist

Mushroom

Fungi

Sunflower

Plant

Bear

Animal

Questions1. Did
this series of questions correctly organize each organism? Why or why not?2. What
additional questions would you ask to further categorize the items within the
kingdoms (hint: think about other organisms in the kingdom and what makes them
different than the examples used here)?
3. Do
you feel that the questions asked were appropriate? What questions would you
have asked?
Your Full Name:
Biology 102/103

Lab
7:Ecological Interactions
INSTRUCTIONS: · Answer Sheet electronically
and submit it via theAssignments
Folder by the date listed in theCourse Schedule (underSyllabus).· To conduct your
laboratory exercises, use the Laboratory Manual located under Course Content.
Read the introduction and the directions for each exercise/experiment carefully
before completing the exercises/experiments and answering the questions. · Save your Lab 7Answer Sheet in the
following format: LastName_Lab7 (e.g.,
Smith_Lab7).·
You should submit your document as a Word (.doc or .docx) or
Rich Text Format (.rtf) file for best compatibility.

Pre-Lab Questions1. Would
you expect endangered species to be more frequently generalists or specialists?
Explain your answer.2. How
does temperature affect water availability in an ecosystem?3. Choose
a species and describe some adaptations that species developed that allow them
to survive in their native habitat.Experiment 1: Effects of pH on Radish Seed GerminationData Tables and Post-Lab AssessmentTable 1: pH and Radish Seed Germination

Stage/Day
Observations

Acetic Acid

Sodium
Bicarbonate

Water

Initial pH

4

8

5

1

2

3

4

5

6

7

Post-Lab Questions1. Compare
and construct a line graph based on the data from Table 1 in the space below.
Place the day on the x axis, and the number of seeds germinated on the y axis.
Be sure to include a title, label the x and y axes, and provide a legend
describing which line corresponds to each plate (e.g., blue = acetic acid,
green = sodium bicarbonate, etc…)..png”>

2. Was
there any noticeable effect on the germination rate of the radish seeds as a
result of the pH? Compare and contrast the growth rate for the control with the
alkaline and acidic solutions. 3. According
to your results would you say that the radish has a broad pH tolerance? Why or
why not? Use your data to support your answer. 4. Knowing
that acid rain has a pH of 2 – 3 would you conclude that crop species with a
narrow soil pH range are in trouble? Explain why, or why not, using scientific
reasoning. Is acid rain a problem for plant species and crops?
5. Research
and briefly describe a real world example about how acid rain affect plants. Be
sure to demonstrate how pH contributes to the outcome, and proposed solutions
(if any). Descriptions should be approximately 2 – 3 paragraphs. Include at
least three citations (use APA formatting).
Additional Information

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Learning Objectives
·
Define ecology as interactions amongst organisms and their
environment
·
Analyze the effects of abiotic and biotic factors in an ecosystem
·
Assess how generalists and specialists define habit tolerance

Introduction

.jpg”>

Figure 1: Note the relationship between an organism,
populations, communities and ecosystems.

Ecology is the scientific
study of both the interactions among organisms and the interactions between
organisms and their environment. It is an interdisciplinary field that blends
Earth science, evolutionary biology and general biology. Ecology explores
the adaptations of organisms, the distribution of organisms and
biodiversity.

Abiotic
and Biotic Factors
E

Figure 2: Creatures have learned to thrive in a variety
of extreme environments, such as the desert climate pictured above.

Organisms have adapted and evolved anatomical, physiological, and
behavioral characteristics that compensate for variation within the
environment. The blending of ecology and evolutionary biology is probably
most evident when examining organismal ecology. In this way, the
environment shapes the organisms.
Habitat
Tolerance

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Figure 3: Dandelion (Taraxicum officionale)- species like
the dandelion are very common and show no aspects of rarity making them
very common handling a broad range of tolerances.

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