biology homework 1

I know so many people who are anti-GMO, but I’ve always considered that to be a misunderstanding of a technology that’s been around since the dawn of agriculture…..

In this TEDs talk, Dr. Pamela Ronald, Plant Geneticist,  shows us why genetic modification isn’t necessarily hostile to traditional (even organic) farming. If time permits, we will be watching this TEDs talk in class.  It is also located in your “GMOs and Feeding the World “Assignment.  (Attached below). (Links to an external site.)

Complete the attached document inside the same file answer the questions in different color different ink . under each question . 


week 4

for expert_researcher 


Hate Crimes

 1.5 page paper that discusses your views about Hate Crimes.Describe a hate crime explain why it is a hate crime. should hate crime be punished more severely than if it was not a hate crime? why or why not? APA Format references also Plagiarism free  


BIOS 255 Week 8 Final Exam


1. Question: Describe the feedback mechanism involved in erythropoiesis.

2. Question: Describe the cardiac cycle (include conduction, contraction, heart sounds and EKG information). 

3. Question: Describe the factors that increase blood pressure (negative feedback involved in blood pressure regulation). 

4. Question: Describe the responses involved in non-specific immunity. 

5. Question: Describe cell-mediated immunity (antigen presentation, antigen recognition, activation and cellular response). Include both CD8 and CD4 T cells.

6. Question: Describe antibody-mediated immunity (antigen presentation, antigen recognition, activation and cellular response).

7. Question: Describe the events, pressures and muscles involved in inhalation and exhalation. 

8. Question: Describe how breathing is regulated through the negative feedback control of PCO2, PO2 and pH.


Biology MCQs Test Bank

1. The term metastasis refers to the fact that cancer cells tend to ________. (Points : 4)

2. Proteins that are involved in the regulation of the cell cycle, and that show fluctuation in concentration during the cell cycle, are called ________. (Points : 4)
        proton pumps

3. All of the following statements are true about mitosis except (Points : 4)
        the cells arising from the process all have half of the genetic material.
        the cells arising from the process are genetically alike.
        the process of mitosis is followed by cytokinesis.
        spindle fibers are involved in the movement of chromosomes.
        both sexually and asexually reproducing organisms utilize the process of mitosis.

4. Cancer is a disorder in which some cells have lost the ability to control their ________. (Points : 4)
        spindle fibers
        growth rate
        surface area

5. Susan was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. The cell under examination was most likely a(n) _________. (Points : 4)
        animal cell in the M phase of the cell cycle
        dividing bacterial cell
        plant cell undergoing cytokinesis
        animal cell undergoing cytokinesis
        plant cell in the anaphase stage

6. Chromosomes are aligned at the spindle equator during (Points : 4)

7. The chromosomes are moving to opposite poles during (Points : 4)

8. Which of the following statements is correct regarding the events of the cell cycle? (Points : 4)
        DNA is duplicated during the G1 and G2 phases
        DNA replicates during cytokinesis.
        Interphase consists of G1, S, and G2.
        The M phase is usually the longest phase.
        The cell stops growing in G2 phase.

9. A human egg with 22 chromosomes that is fertilized by a normal sperm will result in (Points : 4)
        a zygote with trisomy.
        a zygote with disomy.
        a zygote with monosomy.
        a zygote with normal chromosome number.
        nondisjunction during subsequent mitosis.

10. Meiosis in animals produces _________. (Points : 4)
        embryonic cells.
        diploid cells
        somatic (body) cells.
        gametes (sperm cells and egg cells).
        all cell types

11. Chromosomes that occur in pairs and code for the same traits are called _____________ chromosomes; these do not include the __________________ chromosomes which code for gender. (Points : 4)
        homologous; autosomes
        autosomes; homologous
        diploid; haploid
        homologous: sex 
        sex; autosomes

12. Following meiosis I, the daughter cells are ______; following meiosis II, the daughter cells are ______; and following mitosis, the daughter cells are _______. (Points : 4)
        diploid; haploid; diploid
        diploid; diploid; haploid
        haploid; haploid; diploid
        haploid; haploid; haploid
        diploid; diploid; diploid

13. All normal human body cells contain ________ pairs of chromosomes. (Points : 4)

14. An image of an individual’s complement of chromosomes arranged by size, length, shape, and centromere location is called a(an): (Points : 4)

15. A tetrad is composed of (Points : 4)
        two chromosomes with two sister chromatids each.
        two sister chromatids with separate centromeres.
        four chromosomes with two sister chromatids each.
        four sister chromatids with a common centromere.
        four sister chromatids attached at a common centromere.

16. The normal complement of sex chromosomes for a human male is: (Points : 4)

17. Down syndrome is also known as trisomy (Points : 4)

18. Parents with the dominant phenotype cannot have offspring with the recessive phenotype. (Points : 4)
        True because the dominant gene must be passed down from each parent.
        True because at least one dominant gene will be passed down from each parent.
        False because one parent could carry the recessive allele.
        False because both parents could carry the recessive allele.
        True because both parents have the dominant allele.

19. The phenotype of a black rabbit whose complement of alleles for the trait is Bb would be: (Points : 4)
        homozygous dominant
        impossible to determine

20. If a homozygous black bull is mated with a homozygous white cow and the calf is gray, this would be an example of ___________. However, if the calf has black and white spots this would be an example of _______________. (Points : 4)
        incomplete dominance; a sex-linked trait
        incomplete dominance; codominance
        codominance; homology
        complete dominance; polygenic trait
        a sex-linked trait; a recessive trait

21. If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio of tall:short plants? (Points : 4)
        all tall
        all short

22. Alleles are (Points : 4)
        dominant traits.
        chromosomes with more than one gene.
        2 versions of the same trait.
        alternate versions of the same trait.
        exact copies of the same trait.

23. Skin color is coded for by several different genes which results in a range of skin colors from very dark to very light. This is an example of ________________. (Points : 4)
        polygenic inheritance
        incomplete dominance
        the rule of multiplication

24. Sickle cell disease is caused by a single mutation in the DNA of a particular gene. A person with this disease has red blood cells that lose their original donut shape and form a sickle shape. People with this disorder suffer from low energy levels, blood clots, and strokes. This is an example of (Points : 4)
        a multifactorial trait.
        polygenic inheritance.
        incomplete dominance.

25. A man with blood type A and a woman with blood type B can have a baby with blood type O blood. (Points : 4)
        True because A and B are the dominant blood types and both individuals could carry a type O allele.
        False, the child must have type AB blood.
        False because A and B are codominant.
        False because Type A and B are dominant blood types and these individuals cannot have an offspring with the recessive blood type.
        True because only 1 O allele is needed.




A+ Paper

Research indicates that teachers and parents are essential to the academic growth and success of children; complementary attitudes are necessary for positive school-home relations; and effective collaboration is dependent on the belief that the parent-teacher relationship is a priority.

In a 1,000-1,250-word paper, describe how positive, collaborative relationships with families promote the intellectual, social, emotional, and physical growth of children. Examine attitudes that you hold and complementary attitudes that you believe parents should hold that support positive school-home relations. Additionally, describe specific ways that, as a classroom teacher, you could foster and promote collaborative relationships with parents. Support your paper with five scholarly resources.

Prepare this assignment according to the APA guidelines






Class complete


biology paper- wensy lewisnn only


Continuing on your research from Weeks 3 and 5.

Provide an analysis of the social and ethical implications of your chosen biotechnology. Strive for an even-handed honest-broker approach in which you carefully analyze the possible benefits of the technology, as well as any possible drawbacks. For now, hold back on disclosing your point of view (youÂ’ll get a chance to express your opinion in the final paper in Week 9).

For both benefits and drawbacks, state whether these are based on actual evidence, or based on speculation about possibilities. Consider the possible biases of both proponents and critics, if appropriate. Finally, address whether there any special ethical considerations that go beyond simply looking at the risks and benefits.

This assignment should be at least one page of double-spaced text (about 300 words) but not much more than two pages of double-spaced text (about 600 words). As always, think of the expected length as a proxy for how much to cover and how much detail to go into. In addition to your general remarks, you will need to go into depth on several issues to meet the expected length. Describe your points in a clear manner, and support them with explanations, examples, and discussions.

Hint: Merely providing a list of issues will not be sufficient for a good grade. You need to describe the issues fully, and support them.  Do not copy any bulleted lists from your sources.

You must have a reference section which contains an SWS reference to your chosen article and all other sources. Additionally, you must provide in-text citations (in SWS format) to your references in the body of the text. Integrate all sources into your paper using proper techniques of quoting, paraphrasing and summarizing, along with your in-text citations.  Double-space your paper. Use standard margins and fonts. Also, follow any additional formatting instructions provided by your instructor.

Objectives evaluated by this assessment: Categorize a wide range of organisms, from single-celled to multi-celled organisms. Describe how organisms acquire and utilize both energy and material. Describe the cell cycle, cell reproduction, and control. Investigate DNA and gene expression as well as technologies based on our understanding of them. Discuss interactions between organisms in ecosystems.


The Fentanyl Story


You will need to read the article below and write a short discussion paper on fentanyl.  

The Fentanyl Story.pdf

Include your name, course number and date on your paper (single spaced). A title page and/or reference page is not required. However, within the body of your paper you must appropriately cite your work. The content of your summary must be at least 2 1/2 typed pages (doubled space, Time New Roman 12 font, using APA writing style). 



Written Assignment: Biology and Technology in the Real World

Addresses course outcomes 2 and 3:

        use knowledge of biological principles to ask relevant questions about the natural world

        make observations and discriminate between scientific and pseudoscientific explanations

1. Select one of the topics listed below.

2. Find at least two information sources related to the topic. You can find assistance with searching for articles at the UMUC Library Subject Guides at .

3. Write a 750-1500 page paper, excluding references and title page. You must read the information sources that you find and summarize the information in your own words, addressing each of the questions and expectations for your chosen topic. Extensive quotes from the article are discouraged. Use APA style for citing references, see .

4. Post your assignment to your Assignments folder by the due date listed in the course schedule.

 Topics (select one)

a)  Genetically modified organisms (GMOs).  What is the purpose genetic engineering of crop plants and domestic animals? Briefly explain how GMOs are created. What foods in your supermarket contain GMOs? Are foods that contain GMOs safe for human consumption? What types of regulations exist for these foods? Clearly explain your reasoning for each answer. The following website from FDA regarding GMO regulation may be helpful:

b)  Stem cells.  Your friend had a spinal cord injury after a bad car accident. The medical team has decided that he is a good candidate for a clinical trial using stem cell therapy. Your friend has not had a biology course since high school, so you decide to write him a letter sharing your knowledge of stem cells. Include in your letter a description of the biology of stem cells and how these cells are unique from other cells. Contrast the different types of stem cells, including pros and cons of each. Explain how stems cells are can be used to treat diseases and injury, with special focus on spinal cord injuries. Conclude with your own opinion. The following website from NIH regarding stem cell research will be very helpful: .


c) Fracking (hydraulic fracturing) and tar sands (oil sands).    With society’s dependence on nonrenewable fossil fuels, the oil & gas industry is turning to the use of hydraulic fracturing and tar (oil) sands to extract natural gas and oil respectively.  A friend asks you “What’s all this controversy in the news about fracking and tar sands?”  Briefly explain to your friend how hydraulic fracturing and tar (oil) sands are used to obtain these fossil fuels. Then, in more detail, describe the environmental problems that may result from these processes and why they are controversial. Issues that may be addressed involves, but are not limited to, water, air and soil pollution, effects on human health, effects on other species and natural ecosystems. Finally, give your opinions on possible solutions to these environmental problems, with your reasoning backed by the references that you studied. The following websites from EPA may be helpful: