Biology MCQs Test Bank

1. The term metastasis refers to the fact that cancer cells tend to ________. (Points : 4)
        destroy
        divide
        reproduce
        shrink
        travel

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)
        centromeres
        kinetochores
        centrioles
        cyclins
        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)
        size
        spindle fibers
        growth rate
        surface area
        volume

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)
        interphase
        anaphase
        metaphase
        telophase
        prophase

7. The chromosomes are moving to opposite poles during (Points : 4)
        prophase
        anaphase
        metaphase
        interphase
        telophase

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)
        23
        46
        92
        12
        2

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

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)
        YY
        XX
        XO
        XXY
        XY

17. Down syndrome is also known as trisomy (Points : 4)
        13
        15
        18
        21
        22

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)
        black
        heterozygous
        Bb
        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)
        1:1
        1:2
        3:1
        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
        pleiotropy
        codominance
        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.
        codominance.
        pleiotropy.
        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.

 

 

HCA 421 week 2 both discussion Strategic Thinking, Market Segments

Strategic Thinking
Select an organization in the health care arena you would like to work for.  With this organization in mind, describe how strategic thinking could lead to the identification of opportunities for this organization to gain a competitive edge in the industry. Provide at least one example that demonstrates the importance of “strategic thinking.” Support your primary response with at least one scholarly source. Provide in-text citations and complete references for all sources used. Format your post according to APA style as outlined in the Ashford Writing Center. Respond to at least two of your classmates’ posts. Market Segments 
The U.S. population continues to diversify, increase in average age (primarily due to baby boomers), and to be influenced by national legislation (e.g., Affordable Care Act, Medicare Modernization Act, HITECH Act).  Select  a specific type of health care organization.  Which market segments pose opportunities for growth, and which pose threats to the organization’s survival?  Provide at least one strategy related to the assessment and interaction with its market and customers that will maximize opportunities and minimize threats. Support your primary response with at least one scholarly source. Provide in-text citations and complete references for all sources used. Format your post according to APA style as outlined in the Ashford Writing Center. Respond to at least two of your classmates’ posts.

Help Need Work Done By 1-27-19 5:00 central standard time

Part 1-Analytical Report

Write a short analytical report (3 – 4 pages) on two topics: shortages / scarcity and point elasticity / arc elasticity and specifically address the following points: Design a study of a production function for a steel mill and another one for a call center, which variables would you use, and what statistical method would you select for each function? In general, compare and contrast the production function for a product and one for a service center. Comment briefly on the following methods of cost estimation: Engineering cost Survivorship principle

Part2 – Quantitative Analysis Case

Write a Quantitative Analysis report on the following problems: The owner of a car wash is trying to decide on the number of people to employ based on the following short-run production function:   Q = 6L – 0.5L2
      Where Q = Number of car washers per hour L = Number of workers Generate a schedule showing total product, average product, and marginal product, Plot this schedule on a graph. Suppose the price of basic car wash (no undercoating, no waxing treatment, etc) in his area of business is $5. How many people should he hire if he pays each worker $6/hour? Suppose he considers hiring students on a part-time base for $4/hour. Do you think he should hire more workers at this lower rate? Explain. You are given the following cost functions:
      TC = 100 + 60Q – 3Q2 + .1Q3
      TC = 100 +60Q + 3Q2
      TC = 100 + 60Q Compute the average variable cost, average cost, and marginal cost for each function. Plot them on a graph. In each case, indicate the point at which diminishing returns occur. Also indicate the point of maximum cost efficiency (i.e. the point of minimum average cost). Is this company operating in stage II? For each function, discuss the relationship between marginal cost and average variable cost and between marginal cost and average cost. Also discuss the relationship between average variable cost and average cost.

Below is a recommended outline. Cover page (See APA Sample paper) Introduction Purpose of paper Thesis sentence Body (Cite sources using in-text citations.) Main point 1 Example or evidence Evidence (support from the literature) Student’s original thoughts and ideas about the section’s content and a concluding thought Main point 2 Example or evidence Evidence (support from the literature) Student’s original thoughts and ideas about the section’s content and a concluding thought Main point 3 Example or evidence Evidence (support from the literature) Student’s original thoughts and ideas about the section’s content and a concluding thought Conclusion – Summary of main points Lessons Learned and Recommendations as needed References – List the references you cited in the text of your paper according to APA format.

SCI 115 Quiz 7

IMPORTANT: AFTER PURCHASE, LOG IN TO YOUR ACCOUNT AND SCROLL DOWN BELOW THIS PAGE TO DOWNLOAD FILES WITH ANSWERS.

1. Which individual proposed the same idea as Darwin after studying the wildlife in the Amazon basin?

2. What is the age of the oldest known terrestrial rock?

3. Which type of fossil is considered a trace fossil?

4. Which of the following is evidence that the continents are not static?

5. Similar structures that have evolved independently in different lineages that do not share common ancestry are called

6. What is true about homologous structures?

7. What event could increase the frequency of a mutation in a population over time?

8. ____ changes the DNA but has no impact upon the individual.

9. Individuals who are heterozygous for sickle-cell anemia have a greater resistance to

10. With ____ selection(s), the allele frequency will shift in a consistent direction.

11. ____ is a random change in allele frequency over time that is brought about by chance.

12. The study of the evolutionary history of species is called  

BUY MORE MATERIALS FOR THIS COURSE:

SCI 115 Quiz 1

SCI 115 Quiz 2

SCI 115 Quiz 3

SCI 115 Quiz 4

SCI 115 Quiz 5

SCI 115 Quiz 6

SCI 115 Quiz 7

SCI 115 Quiz 8

SCI 115 Quiz 9

SCI 115 Quiz 10

Dietary Analysis Project-Part III: Correcting Menus and Reanalyzing

Dietary Analysis Project-Part III: Correcting Menus and Reanalyzing  Correcting Menus and Reanalyzing

Please submit Part III of the Dietary Analysis Project: Correcting Menus and Reanalyzing here.Part III (Due end of Week 5) – Revise Part II based on feedback from the instructor and then complete p 7-10 of the template. For Part III, you will create a revised 24-hour menu in order to meet the individual’s nutrient targets and project requirements. Your submission should remain in the template format.Please refer to the Project Instructions located under Week 3Don’t forget to also submit the Nutrient Intake Report along with the template

BLOOD MINERALS

****A huge crackdown in the US is forcing technology firms to come clean about the source of the minerals used in smartphones and electronics. There are four most commonly mined conflict minerals, they are Cassiterite (for tin), Wolframite (for tungsten), Coltan (for tantalum), and gold ore. These are all extracted from Eastern Congo (www#1). These resources take a ride thru the global supply chains and end up in our mobile phones, laptops, jewelry and other products. These items are traded on the exchange swapped by banks. This is a global problem, profits from the diamond and gold trade stir up the pot and contribute to conflict (www#1).

Since February 2018, the Securities and Exchange Commission has considered weakening or repealing the US rule, the Dodd Frank Act 1502, as it has turned in a boycott of minerals. The purpose is to prevent militia groups mining profits to fund fighting. Rescinding this rule and allowing congress and the executive to develop better policies to this problem is the clear solution (www#2).

Some tech lobbies, wishing to wash their hands of any responsibility for the exploitation of blood minerals has recently listed that coltan is no longer used in the making of mobile phones, tablets, consoles or cameras. Also to state that mines were closing. However, the truth is out there that the demand for the mineral is still greater than its supply (www#3).

www #1: Responsible Minerals https://www.globalwitness.org/en/campaigns/conflict-minerals/#more (Links to an external site.)

www #2: Negative Impacts of US conflict minerals law being ‘exaggerated’ https://chemicalwatch.com/67181/negative-impacts-of-us-conflict-minerals-law-being-exaggerated (Links to an external site.)

www #3: Blood and Minerals: Who profits from conflict in DRC https://www.aljazeera.com/indepth/features/2016/01/blood-minerals-profits-conflict-drc-160118124123342.html*********

PROVIDE A REACTION OR ADDITIONAL INFORMATION TO THE TEXT ABOVE

Your initial reply to another student must be a minimum of 250 words, must reflect your research, must be written in your own words and not copied and pasted from online. As you research, select one specific aspect, example or area of evidence and focus on it so you can provide in-depth details. I do not want you to spend your words on a broad overview. I want you to teach us in depth about one aspect, example or area of evidence. Your initial posting should reflect your research and should present in-depth information about some aspect of the problem, or its causes, or potential solutions, or what is being done (or needs to be done). Explain actual evidence and/or example.  Cite your source(s) within the sentences of your posts. At the end of your posts, include the source’s complete citation. A complete citation has two parts: 1) the website’s title, and 2) the website’s URL.

Biology Paper Due ASAP

1-2 Pages

  https://www.scientificamerican.com/article/gene-increases-risk-for-pot-addiction/?WT.mc_id=SA_syn_WHFreeman 

1. What interested you about this article and why did you choose it?

2. How did this article help to advance knowledge about this scientific topic in (a) the scientific field, and (b) your own understanding?

3. How does this article help you to see how the biology you are learning is relevant outside the classroom?