Impact of Accelerating Human Dominance on the Ecosystem

Based upon your studies throughout the semester, write a paper discussing “The Impact of Accelerating Human Dominance on the Ecosystem in 2019. This paper must be presented in a power point format. This presentation should include no more than fifteen slides.This assignment should be submitted tothe Assignment Tab by July 28, 2020. Remember this assignment is worth 100 pts.

Rubric for Powerpoint

Do not submit the power point in assignment. Submit it in Discussion Board.

1. At least 15 slides with content information(this does not include title pages and or reference page.) 50 Pts

2.Include current information(such as CoVid-19). 25 Pts

3. Slides must not include pictures only 10 Pts

4. The slide presentation must reference information you studied in the book 15 Pts

Process of the Scientific Method Lab Report

To submit, read the lab, print or edit pages 6-10 to include your data, graph, and answers to questions. Save your document and upload the completed document as a Word or PDF file in Canvas.

If you have a disability that makes it difficult to complete this lab, please contact your instructor. Please provide your instructor a copy of the Memorandum of Accommodation (MOA) from NVCC Disability Support Services.

 

Objectives:

 

●Use the Scientific Method to design and complete a simple experiment.

• Identify the control and experimental groups in the experiment.
• Recognize the conditions that are held constant during an experiment.
• Identify the independent and dependent variables in the experiment.
• Collect and analyze data using tables and graphs.
• There are specific causes for observed events in the natural world.
• The causes of these events can be identified.
• There are patterns and rules that can be used to describe observations.
• The patterns and fundamental rules of nature are universal.

Background:

 

Science is the process used to solve problems and to gain a better understanding of the natural world. Scientists are constantly looking for better and clearer answers to a wide range of questions. The basic method used to find the answers is called the Scientific Method. This method is based on a set of coreassumptions:

●Science is an ongoing process that results in an evolution of our understanding of the patterns and fundamental rules of nature.

The Scientific Method is a stepwise process used to develop answers.

• Observation: Something that is seen or felt with the senses.
• Question: How or why did an event occur?
• Hypothesis: A tentative and testable answer to the question

4.Experiment: A controlled event that generates data.

5.Conclusion: After analysis of the experimental data, there will be 2 possibilities for a conclusion:

A)the hypothesis is consistent with the data and the conclusion is “Do not reject the hypothesis”

OR

B)the hypothesis is not consistent with the data and the conclusion is “Reject the hypothesis.”

The question formulated from the observation must be logical and answerable. Hypotheses developed from questions must be based on relevant information, testable, and falsifiable. Experiments should be designed to minimize variability, meaning only small details/variables (preferably only one) should be varied during the experiment in order to test the hypothesis. These controlled experiments are best when only one variable is changed. Lastly experiments must be repeatable to help ensure there is no bias in the results.

 

While an experiment is conducted, conditions are measured and monitored closely. Some conditions of the experiment are held constant and remain the same during the experiment. For example, a researcher testing the effect of nutrient conditions on plant growth will give each plant the same amount of water,sunlight, air conditions, temperature, etc. The independent variable is the experimental condition that theresearcher changes during the experiment in order to test the hypothesis. In the plant growth example, the concentration of a particular mineral could be the independent variable. Ideally, only one variable is changedwhen testing a hypothesis. The dependent variable is measured during the experiment, and the measurements are carefully recorded. For example, the researcher measuring the effect of a mineral on plant growth will grow identical plants with and without a particular mineral. The researcher will give each plant (experiment) the same amount of water, sunlight, amount of soil, and conduct the experimentover the same time period. The researcher can then measure the dependent variables such as: plant height, plant color, flower production, fruit production, etc. This data can be recorded in tables or charted on graphs. When graphing data from an experiment the independent variable is on the horizontal (X-axis) and the dependent variable is on the vertical (Y-axis).

Cornell, B. 2016. Soil Content. [ONLINE] Available at: https://ib.bioninja.com.au/options/option-c-ecology-and-conser/c6-nitrogen-and-phosphorus/soil-content.html. [Accessed 24 April 2020].

Experiments are often submitted for peer review and are repeated by other scientists. The results of an experiment often stimulate additional hypotheses and experiments. Over time, a large number of experiments that investigate a natural phenomenon and generate consistent data may lead to a consensusamong scientists about the interpretation of this data. A theory may be formed from this scientific consensus. In some branches of science, a theory develops into a law, which is generally expressed by a mathematical formula used to explain and predict actions. In physics and chemistry there are several examples of laws.

In this experiment, you will use the internet to research resting heart rate and recovery after exercise, use your lecture textbook and the internet to learn more about the scientific method, and collect data on your own heart rate to complete the data set.

Materials:

Calculator Internet

Stop watch or timer BIO 101 lecture textbook

 

Safety:

 

When running in place keep a safe distance from others and objects around you.

Procedure:

 

Before Data Collection

 

1.Use the internet to research how exercise affects heart rate and heart rate recovery after exercise.

2.Before you collect your own data, complete questions 1-4 on page 6 (based on your internet research).

Data Collection

 

1.Heart rate data from other students are provided for you. The data are organized into the following groups:

•A control group (those who did NOT exercise)

•An experimental group (those who exercised).

The groups were randomly selected (mix of male and female), but your heart rate data are missing.

2.Each student was given an identifying number in order to keep track of the data. The Students inthe Control Group are be labeled C1, C2, C3, C4, and so on. Students in the Experimental Group are labeled E1, E2, E3, E4, and so on. You will be part of the experimental group, E16, unless you have a disability that prevents participation (then you will be part of the control group, C16). Conduct the experiment as described below and add your data into the data table in the appropriate box.

• Practice finding your pulse points on either your wrist or neck. This will be essential when measuring your heart rate from either the wrist or neck pulse points.
• Determine your resting heart rate. Use one of the pulse points at either your wrist or neck to countyour heart beats during a 15 second time frame (use a clock or timer). Multiply by 4 to calculate your resting heart rate in beats per minute. Record this data for yourself in the “Rest” column of the row for E16 (or C16), depending on which group you chose to be part of.
• The Experimental group ran in place for two minutes. You are E16 in the Experimental group, so you should also run in place for two minutes (or sit in place if you are C16 in the Control group). For your safety,move to a place that will allow you to exercise without running into another person or any large objects.
• Immediately after running in place (or sitting for the control group), measure your heart rate as described in step 1. Use one of the pulse points at either your wrist or neck to count your heart beats during a 15 second time frame. Multiply by 4 to calculate your heart rate in beats per minute. Record thisdata in the Time 0 (T – 0) column of the Data Table below.
• Every two minutes for the next ten minutes measure your heart rate as described in step 1. Useone of the pulse points at either your wrist or neck to count your heart beats during a 15 second time frame. Multiply by 4 to calculate your heart rate in beats per minute. Record these data points in the Data Table below. Both groups, Control and Experimental, measured their heart rates every 2 minutes for 10 minutes.
• After you have recorded your data in the row for E16 (or C16), complete the data table on page 8 by calculating the average heart rates at each time for the Experimental Group and for the Control Group.
• On page 9, graph the heart rate averages data on the graph paper provided. Your graph should have two lines (one for the Experimental Group average values and one for the Control Group average values). Be certain to label the x-axis and y-axis.

Answer questions 5 -10 on page 10.

Human Genetics Analyzing a Karyotype Biology Lab Report

In this activity, you will examine prepared slides from cross-section of anthers, from the lily flowers. The lily flower has six anthers surrounding one carpel. Each anther has two pair of microsporangia (pollen sacs). In these microsporangia, you can see the stages of meiosis as the male gamete (pollen) is formed.

Go to:

http://bio.rutgers.edu/~gb101/lab10_meiosis/meiosis_web/index10.html (Links to an external site.)

1. Review the information on meiosis on the left and scroll all the way to the bottom of the left panel to click on Begin assignment. In Part 1, review the stages of meiosis and then click on Begin Part 2.
2. Identify the different stages of meiosis. Select Click here to begin. The cross-section of a lily anther in the early stages of meiosis will appear on the right side of the screen. Click on one of the microsporangia to magnify the image of that area and then identify the stage of meiosis the cells are in. Take a screen shot.
3. In Meiosis II, all the cells in a microsporangium will not be in the same stage of division. Therefore, images of single cells are shown. Click here to load the stages of Meiosis II. Click on the cell and then identify its stage of division. Take a screen shot.
4. Upload two screen shot images of you doing Part 2 and Part 3. There is no need to complete Part 4.

 Science and Technology Biotechnology Worksheet

Science is the study of how the universe works using the scientific method as a framework for asking questions. Throughout history, humans have built up a body of scientific knowledge and have used this knowledge to develop technologies to make life easier, or to broaden their knowledge. Scientific discovery drives technological advances and sometimes, as new technologies are developed, they enable scientists to answer questions that were unanswerable before. For example, researchers had to understand the physics of visible light and how it changes when going through different substances before they could use this knowledge to design microscopes. Once microscope technology was developed, it allowed scientists to ask questions about things that were not visible to the human eye. For this assignment you will look at this interdependence between science and technology by learning more about one biotechnology that is crucial to the modern world such as feeding a growing world population, fighting disease, developing new fuels, or cleaning up the environment.

Example: If you were thinking about cell phones (not a biotechnology), you could look at the scientific discoveries that had to happen before cell phones could exist. The discovery of electricity, electromagnetic waves, and the electrochemistry of batteries all had to happen before cell phones could be invented. You could also look at the technological advances that had to happen before we could have cell phones. Batteries, electric circuit boards, receivers, speakers, and satellites all had to exist before someone could invent the cell phone.

To learn more about biotechnology, review the assigned readings in your textbook for this unit and review the assignment resources.

Select one specific biotechnology that you are interested in learning more about. For your selected biotechnology address the following questions in the table.

What biotechnology did you select?

Explain what it is and how it is used.

1. Identify two scientific discoveries that had to take place before your selected biotechnology could be developed.
2. Describe the two scientific discoveries that had to take place before your selected biotechnology could be developed. When and how did the discoveries that you described take place?
3. Identify two technologies that had to exist before your selected biotechnology could be developed.
4. Describe the two technologies that had to exist before your selected biotechnology could be developed. How long have the technologies that you described existed?
5. Identify and discuss two positives and two negatives of biotechnological advances. Are there any biotechnologies that you think should not be pursued? Why or why not? Explain your answer.

Minimum of 300 words