Biology 2 – Hierarchies Of Life Lab Questions

Hierarchies of Life
Experiment 1: Classification of Common Objects
Data Tables (15 points)

Post-Lab Questions
1. 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? (10 points)

A lot of the groups had similar characteristics and function, until I looked deeper into then as I continued down the list of questions. For example, a candle and a Scentsy are similar in function and characteristics, as they both give off pleasant smells. But if you were to ask if they use fire, you’d be able to differentiate the two.

2. Do you feel that the questions asked were appropriate? What questions would you have asked to devise this classification flow chart? What objects would be grouped together with your system? (10 points)

I had to look over the chart a few times and soon made sense of the flow. I found myself conflicted on some of the answers as well, not agreeing with some entirely. For example, I don’t think a hex nut is cylindrical or round. It has sides, similar to pens and pencils where the style if hex like.

3. Do you think it is more or less challenging to classify living organisms in comparison to objects? Why? (10 points)

4. 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 8. Make sure you ask enough yes/no questions so that each item ends up in its own box or category at the end. (10 points)

Experiment 2: Classification of Organisms
Data Tables (10 points)
Table 2: Classification of Organisms

Organism

Domain

Kingdom

Defined Nucleus

Mobile

Photosynthesis

Unicellular

Salmonella

Bacteria

Genus

No

Yes

Yes

Yes

Ants

Eukarya

Animalia

Yes

Yes

No

No

Zoo Flagellate

Eukarya

Protozoa

Yes

Yes

No

Yes

Wolf

Eukarya

Animalia

Yes

Yes

No

No

Morning Glory

Eukarya

Plantae

Yes

No

Yes

No

Euglena

Eukarya

Protozoa

Yes

Yes

Yes

Yes

Shiitake

Eukarya

Fungi

Yes

No

No

No

Pseudomonas

Bacteria

Bacteria

No

Yes

No

Yes

Spruce

Eukarya

Planta

Yes

No

Yes

No

Death Cap Mushroom

Eukarya

Fungi

Yes

No

No

No

Post-Lab Questions
1. Did this series of questions correctly organize each organism? Why or why not? (10 points)

2. Do you feel that the questions asked were appropriate? What questions would you have asked? (10 points)

3. Which kingdom do you believe is most challenging to categorize correctly? Explain your answer (10 points)

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Enzymes: Temperature, PH, And Specificity Hands-On Labs, Inc.

0Enzymes: Temperature, pH, and Specificity
Hands-On Labs, Inc.  Version 42-0054-00-01
Lab Report Assistant                                                                                               This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.
Exercise 1: Enzyme Specificity
Observations
Data Table 1: Glucose Concentration
Wells Concentration of Glucose
a
b
c
d
e

Questions

A.  What determines a person’s ability to digest lactose?
B.   Which of the wells showed a positive result for glucose? Explain the results.
C.   Explain why testing for glucose is used to determine the activity of the enzyme lactase.
D.  Explain the experimental conditions for the five different wells.

Data Table 2: Presence of glucose in wells indicating lactase activity at various temperatures
Well Time (min) Concentration of Glucose

a 5
10
15
20
b 5
10
15
20
c 5
10
15
20
Exercise 2: Enzymes and Temperature
Observations

Questions:
A.  Graph the effect of temperature on the activity of the enzyme lactase.
B.   What happens when an enzyme is boiled? Is this effect reversible?
C.   Based on your experiment results, what is the optimal temperature for lactase function?
D.  Explain what happens as far as the effectiveness of the enzyme at the freezing temperature. Can this effect be overcome when the temperature rises?

Exercise 3: Enzymes and pH
Observations

Data Table 3: Glucose in wells a-d indicates enzyme activity at various pH levels
Well pH Concentration of Glucose
a 3.5
b 5.0
c 6.8
d 11.0

Questions
A.  Graph the data placing glucose concentrations on the y-axis and the pH values on the x-axis.
B.   What was the effect of pH on the enzyme lactase? Is this true for all enzymes?

 
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Biology Lab 3

Lab 3: Follow the instructions and complete the assignment below. Submit your answers through the Lab 3 Assignment on Blackboard.

Lab 3 1

Lab 3: Evolution by Natural Selection

In this lab, you will explore two different simulations that explain how evolution by natural selection works, both on short and long term scales. For each simulation, you’ll have a series of questions to answer at the end. As for previous labs, you will want to take good notes along the way so that you can answer the questions at the end more easily. A. Go to the Darwin survival game at the following link:

http://coolsciencelab.com/who_wants_to_live_a_million_years.htm

[the game does not work well on my Firefox browser, but works well in all other browsers I’ve tried, such as Chrome or Internet Explorer]

– Press the “Natural Selection” tab and complete the quick simulation – Play the “Survival Game”. I suggest playing it 3-5 times to get a good idea of how it

works; take notes along the way, keeping track of your different organisms, which one was most successful and why, which one lived the longest, whether you won (and if not, how long did you last).

– Click on “Darwin’s Bio” tab and read the text – Take the quiz; keep track of the questions, esp. if you find some of them difficult,

and keep track of what it tells you at the end of the quiz.

When you are finished, answer the following questions about this activity.

1. Are all organisms within a species typically identical? Why or why not? Justify your answer using your notes from the “Natural Selection” tab and from the game you played.

2. What happens to traits that are beneficial for an organism? To traits that are detrimental to the organism? Justify your answers using your notes from the game you played. Where do these traits come from?

3. Did you win any of the rounds of the game you played? If not, what was your oldest organism? What did it look like, and why was it more successful than others?

4. Describe the process happening during the game. Are the different organisms different species, or different variants within a species? Why does this matter? Justify your answer.

5. Based on your experience in playing this game, do you think there have been more extinctions of species than successes of various species? Explain.

http://coolsciencelab.com/who_wants_to_live_a_million_years.htm
Lab 3: Follow the instructions and complete the assignment below. Submit your answers through the Lab 3 Assignment on Blackboard.

Lab 3 2

6. What was your score on the quiz, and what did it tell you once you completed it? Did you find some specific questions harder? If so, which ones were they?

7. What are the benefits of using simulations like the one you played to learn natural selection? Discuss your answer briefly. Did you enjoy this simulation (including the game and the quiz), and did it help you learn the material? Justify your answer.

B. Discovering relationships between species

The website below is an interactive activity that lets you explore the relationship between organisms on Earth by building phylogenies, both with morphological traits and DNA.

– Go to the website: https://www.pbs.org/wgbh/nova/labs/lab/evolution/, and click on PLAY GAME. You do not have to sign in with an account, you can just play the game as a guest. The website is free.

– Once you enter the game, you’ll see that the screen contains missions you’ll have to

complete, along with a short video. Start by watching the video; remember to take notes about what you learn in the video clip

– Missions have to completed in order; in other words, mission 2 will only open once you’ve completed mission 1. Each mission has 3 “games” to complete, along with a short video.

– Complete all missions, taking notes along the way for each video clip, and about things that are you learning. Take a screen shot of your screen at the end of the 6th mission as evidence that you completed them all 

Once you’re done with all missions, answer the following questions: 8. According to the first video you watched on the website (“Evolution 101”), what is the purpose of the Tree of Life? Explain your answer 9. In mission 1, one of the pop-up questions asks whether an animal or a plant is more closely related to a fungus. What is the correct answer, using the information you learned in mission 1, and why is the answer likely surprising to many people? Another pop-up question was whether a banana is more closely related to a lemon or an onion. What is the correct answer, using the information you learned in mission 1, and why is the answer likely surprising to many people? 10. When two groups of organisms independently evolve similar adaptations, it’s called convergent evolution. Sharks and whales both have streamlined bodies and tail flukes. How do we know that these similarities are because of convergent evolution? Describe your reasoning (Hint: this comes from material in Mission 2)

https://www.pbs.org/wgbh/nova/labs/lab/evolution/
Lab 3: Follow the instructions and complete the assignment below. Submit your answers through the Lab 3 Assignment on Blackboard.

Lab 3 3

11. When you compare the DNA of two closely related organisms, would you expect their DNA to be more similar or less similar than the DNA of two distantly related organisms? Explain your answer. 12. Fossils almost never contain DNA. So how can we know how closely or distantly related fossil organisms are to living organisms? Justify your answer using information you learned in Mission 3. 13. Which do you consider more convincing evidence, DNA or physical features? Why? Justify your answer using material you learned in this lab. 14. What do you think the narrator means when he says, “The host and the parasite are always in this really intimate dance together”, in the video from Mission 5? 15. Based on the information you learned in mission 5, how do scientists think that SIV has jumped hosts to humans? Based on your phylogenetic tree, how many times—at a minimum— do you infer that an HIV virus has jumped hosts to humans? Explain your answer. 16. A common misconception is that humans evolved from chimpanzees. It can therefore be confusing to some people that there are still chimpanzees. How could you use a tree diagram like the one you generated in this level to explain the correct relationship between living chimps and living humans? 17. What is the most surprising thing you have learned while playing through these missions? What is one thing that you’d like to learn more about? Did you enjoy the first simulation (Darwin’s survival game) or this simulation (NOVA phylogenies) more? Justify your answer. Now that you completed this lab, return to Blackboard and select Lab 3 Submission. You will see that Blackboard randomly selected questions for you to answer from the pool of all 17 questions. Copy-paste your answers for the 5 questions that Blackboard selected into Blackboard. Note that as this is a random selection, sometimes the questions will all be next to each other, sometimes they will be the hard ones, sometimes the easy ones, sometimes a true mix, and each student gets a slightly different selection. Each question is worth 2 points, for a total of 10 points for the lab.

 
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BIO 201L Lab 6 The Skeletal System 2015

Pre-Lab Questions:

”1. List the functions of the skeletal system.”

”2. What material contributes the greatest to the compressive strength of bone? ”

”3. Briefly describe the process of bone remodeling. ”

Experiment 1: Classification of Bones

Table 6: Classification of Bones

Bone Name Classification by Shape Classification by Location

Post-Lab Questions

”1. Why is it important to classify bones? ”

”2. Aside from length, what are some other common characteristics of a long bone? Are long bones typically associated with the axial or appendicular skeleton? ”

”3. Compare flat bones and long bones. How are they different? How are they the same? ”

Experiment 2: Digital Slide Image Examination—Bone

Post-Lab Questions

”1. Label the arrows in the following digital slide images: ”

”Cortical Bone: ”

A-

B-

C-

D-

”Trabecular Bone: ”

A-

B-

”2. Compare and contrast cortical and trabecular bone. ”

”3. What is the purpose of cortical bone? What is the purpose of trabecular bone? ”

”4. What are trabeculae? What is their function? ”

”5. What are haversian systems? What is their function? ”

Experiment 5: Physical Skeleton – The Axial Skeleton

Table 9: Cervical Vertebrae Observations

Vertebral Feature Observations

Size of cervical vertebrae in comparison to those of the thoracic and lumbar region

Shape of the vertebral foramen

Spinous Process of the C3 – C6 Vertebrae

Spinous Process of the C7 Vertebra

Table 10: Thoracic Vertebrae Observations

Vertebral Feature Observations

Size and weight of the thoracic vertebrae in comparison to those of the cervical and lumbar region

Shape of the vertebral body

Appearance and projection direction of the Spinous Process

Table 11: Lumbar Vertebrae Observations

Vertebral Feature Observations

Size of the lumbar vertebrae in comparison to those of the cervical and lumbar region

Shape of the vertebral body

Appearance and projection direction of the Spinous Process

Table 15: Rib Feature Observations

Rib Feature Observations

Length of ribs 1 – 7 (do they increase or decrease in length?)

Length or ribs 8 – 12 (do they increase or decrease in length?)

Articulation of the ribs and thoracic vertebrae (notice the specific rib and vertebra that articulate)

Post-Lab Questions

”1. What are the three components of the axial skeleton? Describe the function of each. ”

”2. On the skull below, fill in the blanks with the correct bone names. ”

A-

B-

C-

D-

E-

F-

”3. For the following bones, state whether they are cranial or facial bones and give their location. ”

Bone Facial or Cranial Location

Temporal Bones

Mandible

Vomer

Zygomatic Bones

Parietal Bones

Ethmoid Bone

Sphenoid Bone

Lacrimal Bones

”4. What are the three regions of the vertebral column? Describe the general shape and size of the vertebrae in each region. ”

”5. What are the atlas and axis? What are their functions? ”

”6. On the vertebra below, fill in the blanks with the correct vertebral structure. ”

A-

B-

C-

D-

E-

”7. What is the purpose of the thoracic cage? ”

”8. Describe the three components of the sternum. ”

”9. Describe the difference between true ribs, false ribs and floating ribs. ”

Experiment 6: Virtual Model – The Axial Skeleton

”1. What features are located inferior to the cranium, and superior to the mandibular? Identify the category here. How many individual items are included in this category? Hint: The answer is not a bone. ”

”2. Why aren’t teeth considered bones? ”

”3. Identify the two major bones which compose the head. ”

”4. To what bone does the right scapula attach? ”

”5. Is the left clavicle superior or inferior to the right scapula? ”

Experiment 7: Physical Skeleton – The Appendicular Skeleton

Post-Lab Questions

”1. What are the four parts of the upper extremity and the lower extremity of the appendicular skeleton? ”

”2. Compare and contrast the size and function of the upper and lower extremities of the appendicular skeleton. ”

”3. What are the three fused bones that make up the coxae of the pelvic girdle? What is their location in relationship to one another? ”

Experiment 8: Virtual Model – The Appendicular Skeleton

Post-Lab Questions

”1. How many left metatarsals are there? ”

”2. Is the right fibula inferior or superior to the patella? ”

”3. Are the ossa digitorum or the ossa metatarsalia more medial to the body? ”

”4. Which two bones attach to the patella? ”

”5. Identify the three bones which comprise the leg. ”

Experiment 9: Articulations

Post-Lab Questions

”1. What two ways can joints be classified? What are the three classifications of each type? ”

”2. Fibrous joints are either sutures or syndesmoses. What is the difference between the two? Give examples of each type. ”

”3. A symphysis and synchondroses are two classifications of what type of joint? What are the differences between the two classifications? ”

”4. What allows synovial joints to be diarthrotic? ”

”5. For the following, match the correct synovial joint to the movement it produces. ”

”Pivot Joint” ”Gliding Joint”

”Ball and Socket Joint ” ”Condyloid Joint”

”Saddle Joint” ”Hinge Joint”

Movement Joint

Uniaxial movement, typically flexion or extension

Uniaxial rotation

Side-to-side and back-and-forth movement

Multiaxial movement

Concave and convex surfaces of both bones allow for biaxial movement

Ellipsoidal fit allows for biaxial movement

6. Fill in the chart below:

Joint Articulating Bones Type of Synovial Joint Movement

Elbow

Knee

Hip

Ankle

Wrist

Experiment 10: Virtual Model- Skeletal System Coloring Activity

”Insert the image for each exercise below: ”

”Left Arm: ”

”Sternum and Clavicles: ”

”Vertebral Column: ”

”Right Hand: ”

”Sacrum: ”

”Legs: ”

”Feet: ”

Experiment 11: Skeletal System of the Fetal Pig

Table 34: Skeletal Region Observations

Skeletal Region Observations

Axial Skeleton

Appendicular Skeleton

Joints

Post-Lab Questions

”1. What are some of the similarities and differences you noticed between the human skeletal system and the palpation of the fetal pig skeletal system? ”

”Insert photo of pig in dissection tray with your name clearly visible in the background: ”

 
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