Biology

– Using the textbook Biology of Humans as reference (Ch. 19 and ch.21), explain structure and function of chromosomes and cell division, and DNA. Evaluation is based on criteria that applied before to previous assignments: – Critical thinking – Quality of presentation – Writing skill *Length 1,500 words *Deadline: July 15, 2020

Two Seminar Reflections – Find scientific seminars on YouTube. They must be scientists presenting their original work and must be 40-60 minutes long each. Provide the link along with your submission. See reflection requirements by following the assignment submission links. After attending a biology seminar, please write a brief reflection. The reflection must include information about the talk and three (3) paragraphs: Title of the talk and complete name of the speaker One (1) paragraph summarizing the topic of the talk Another (1) paragraph reflecting on the good things the talk or the speaker had (design of the slides, organization, delivery, connection to the audience, etc.) A final paragraph reflecting on things that need improvement or things that you want to remind yourself to not do.

Lab Report Guidelines For the lab report, you will setup and perform designated 2 experiments. One will demonstrate diffusion, and the other will demonstrate osmosis. Based on the 2 experiments, you will prepare one lab report with experiments on Diffusion and Osmosis. See the experiment instructions provided. Be sure to follow these guidelines for your report. 1. A minimum of 2 references is required. – Credible websites, periodicals, books, newspapers, and journals to compliment your data may be used. 2. PLAGIARIZED PAPERS WILL AUTOMATICALLY RECEIVE A ZERO. NO COPYING and PASTING from websites! 3. Each section in the lap report must be properly labeled as Introduction, Materials & Methods…etc. 4. The length of the total lab report is a minimum of 7 pages –double spaced. See the lab report section instructions on the next page. 5. You may only use Times New Roman, Arial, or Calibri 12 pt font. 6. The margins for each page should NOT be greater than 1 inch. 7. The report and each section MUST be organized in the following order. a. Title page b. Introduction c. Materials & Methods d. Results e. Discussions & Conclusions f. Works Cited 8. Each lab report section should follow the “Lab Report Section Instructions.” See the following page. 9. Grammar, spelling, and punctuation should be used correctly and consistently. Lab Report Section Instructions TITLE PAGE (1 page): Include the lab report title, class name, your name, and due date INTRODUCTION (1 FULL page min.): NO PICTURES • Introduce the topic of the experiment with sufficient background to show your clear understanding of the main topics in the lab exercise. • Background discussion(s) MUST include the following topics: diffusion, osmosis, selective permeability, cell membrane, tonicity, hypotonic, hypertonic, and isotonic solutions, etc. • For your hypothesis, state what you predict the outcome of each experiment will be and why you think so. MATERIALS AND METHODS (1-2 full pages): NO PICTURES in this section. First, list all materials used through each entire experiment Then, describe all procedures as they were performed (refer to instructions in the powerpoint). DO NOT copy and paste form my document. List the procedures with bullets or numbers. RESULTS: (2 pages min) • Include your pictures AND a graph or table displaying the results (time values, observations, & measured lengths) w • For each image, table, or graph, explain clearly, in sentence form, what the images or graphs are showing. Doing this provides a necessary description. DISCUSSION & CONCLUSIONS: (3/4 page min) • Summarize your results. • Explain why the solutions and materials used in the experiments are suitable. • Discuss whether or not the outcome is as predicted – the results support or refute your hypothesis • If it supports your hypothesis, how closely does it match – are there other factors involved • If not, why? What other factors might be involved? • Indicate the significance of this study (why should we study osmosis and diffusion) WORKS CITIED: (1 page) • Cite all references. The reference should include the author(s) name or initials, year of publication, journal or source, specific volume, and the pages.

Using the textbook Biology of Humans as reference (Ch. 19 and ch.21), explain structure and function of chromosomes and cell division, and DNA. Evaluation is based on criteria that applied before to previous assignments: Critical thinking Quality of presentation Writing skill Length 1,500 words Deadline: July 14, 2020

After reading the web article on “Early life stress can leave lasting impacts on the brain”, please answer the following: What is the main function of the hippocampus? How is stress related to the hippocampus and amygdala? The authors mention that “unless we understand what part of the brain is affected, we won’t be able to tailor something to do about it,”. What type of therapy or treatment could you envision for a child with these experiences? Or an adult that had them and is now living with the long-term negative effects of a stressful childhood?

Answer the following TWO questions in 300 words or less. You may choose to divide the questions into two responses or fold the two questions into one essay response. Cite both our text and the Frontline piece OR the NYT piece about supplements in your discussion. INCLUDE A REFERENCE LIST in APA format1. What is your understanding of opinion and fact.  -How are opinion and fact about supplements explored in the Frontline or NYT piece?Choose ONE of Ruggerio’s 6 Key Principles for Thinking and explore how the scientists look at the issueOur skill sets as health professionals.-What is an issue that may come up in your current (or goal) health care profession area that could involve an issue of opinion/fact?-How do your clients/patients/customers rely on your judgment?

Any examples?Web 2.0 tools can be used as a tool to engage college students in their courses. Create a list of 10 Web 2.0 tools that you would consider using in your college classroom. Cite where the tool came from and give a 50-100-word description of what the tool is and how you would consider using it.

Please strictly adhere to the instructions. Although there is no minimum for sources there should be some that were used to help the argument. The argument is:

P1) Using genetically modified insects to genetically modify plants can be used to create biological weapons to create intentional human suffering.

P2) All acts that create intentional human suffering are wrong.

C) Using genetically modified insects to genetically modify plants is wrong.

Research paper that requires recent scientific sources, in text citing, supporting images and diagrams. The following questions need to be answered thoroughly. It will be submitted to a plagiarism detector so nothing can be copied. I will upload:
– A template of the format
– The rubric
– The text book in PDF
– Additional instructions

1. How can you explain the observation that, even within the same family, patients
with the A3243G mutation may manifest very different severity of symptoms?
2. Why would a physician recommend avoiding fasting or to eat multiple smaller meals
during the day rather than the traditional three meals?
3. Some pediatric patients with MELAS react badly when they are immunized against
common childhood diseases. Can you suggest a reason why vaccination may exacerbate
MELAS symptoms?
4. Which of the respiratory complexes would you expect to be least affected by mutations
in mtDNA?
5. Although many mitochondrial diseases, such as MELAS, will involve multiple organs,
neurological or neuromuscular abnormalities are often the earliest signs of disease. Why?
6. Why does the A3243G mutation associated with MELAS lead to reduced activity of
Human Structure and Function GMS 6604 page 13
respiratory complexes I and IV, while the point mutation at 11778 (within the ND4 gene)
associated with Leber’s hereditary optic neuropathy affects only respiratory complex I?
7. Vitamin C (ascorbate) enhances the ab sorption of iron from the intestines. For this
reason, it is recommended that vitamin C not be administered to a patient with MELAS
immediately prior to or subsequent to a meal of red meat o r other foods rich in iron.
What is the biochemical basis for the concern about increased iron availability to a patient with
MELAS?

SQ5- Enzymes Study Questions
1. Define the following:
a. Enzyme
b. Active site
c. Catalyst
d. Activation energy
e. Substrate
2. Describe the function of an enzyme
3. Explain the “lock and key” model of enzyme action.
Factors that affect enzyme action
Conditions Increase enzyme activity Increase enzyme activity
Temperature
Enzyme concentration
pH

4. How does excess heat affect an enzyme?
5. List 5 ways enzymes are used in medicine and industry.
a. __________________________________________
b. __________________________________________
c. __________________________________________
d. __________________________________________
e. __________________________________________
6. How are enzymes named.
7. Iodine tests for what type of substance?
8. What is the color of a positive Iodine test?
9. Name one substance that yields a positive Iodine test.
10. Name one substance that yields a negative Iodine test.
11. What color iodine test shows low amylase activity?
12. Explain why.
13. What color iodine test shows high amylase activity?
14. Explain why.
15. Describe the chemical composition of starch.
16. What is curd?
17. What is whey?
18. What is the role of rennin in cheese making?