Questions
What is a second-messenger system? Why is it necessary for amino acid-based hormones to use such...

  1. What is a second-messenger system? Why is it necessary for amino acid-based hormones to use such a system? Why does it allow amino acid-based hormones to only act where they are supposed to?


  1. Which hormones does the pituitary gland make? Which other glands are directly controlled by the pituitary’s hormones? Why is it beneficial that so many glands are controlled by a single organ attached to the brain?


  1. What is Hypoxia Inducible Factor (HIF)? What kind of situations would cause this factor to be released? Where is produced? Why would this organ care about hypoxia?


  1. What are the primary components of blood? What does each component do? What would you find dissolved in blood, and why are there so many things dissolved in the blood in the first place?


  1. Where in the body is the highest oxygen concentration? The highest carbon dioxide concentration? Why is oxygen so high there? Why is carbon dioxide so high in the other location?



  1. What are the three types of capillaries? What kind of functions would each type be used for?


  1. What are the major anatomical differences between arteries and veins? What are the major physiological differences between arteries and veins? How do the physiological differences explain the anatomical differences?


  1. What is the difference between the systemic and pulmonary circuits? How is blood moved through each circuit?


  1. How does the body use vasoconstriction and vasodilation to control blood pressure? Why does the body use arterioles instead of larger arteries or veins to control blood pressure?


  1. What region of the brain can send signals that alter the heartrate? Why would that region, as opposed to the other three regions, have developed that ability?


  1. What is a baroreceptor? Where are some of the locations where baroreceptors are located? Why would the brain need to monitor the body this way?


  1. What hormones are used to control blood pressure? How do they cause BP to increase or decrease?


  1. What are anatomical differences between lymphatic vessels and blood vessels? What are the physiological differences between lymphatic vessels and blood vessels? How do the physiological differences explain the anatomical differences? Are lymphatic vessels more like arteries or veins, and why?


  1. What is the difference between a primary and secondary lymphoid organ? What are the two primary lymphoid organs, and what are the major secondary lymphoid organs?


  1. What are the Mucosa-Associated Lymphoid Tissues (MALT)? Where are they found, and what do they do? Why would lymphoid tissues be beneficial in these locations?

In: Anatomy and Physiology

1. In cystic fibrosis one amino acid is missing in the CFTR protein. Explain why this...

1. In cystic fibrosis one amino acid is missing in the CFTR protein. Explain why this mutant protein will not end up in the plasma membrane. (You may need to investigate the normal function of this CFTR gene)

2. Why might a mutation in the DNA NOT lead to an abnormally functioning protein?

3. Describe one genetic disorder in which a gene is mutated and leads to abnormal protein folding ( other than Huntington’s). In “your disorder”, name the gene mutated and how it affects the protein.

4. Research Huntington’s disease: Describe the mechanism of the disease and its relationship to protein folding. Cite your references.

In: Biology

10. Glutamate is an example of an excitatory amino acid neurotransmitter that acts via direct synaptic...

10. Glutamate is an example of an excitatory amino acid neurotransmitter that acts via direct synaptic transmission when it is released from presynaptic neurons in the brain.

Which of the following is a mechanism by which an action potential is LEAST likely to occur in the associated postsynaptic neuron? Summation of ionic events


  1. temporally from rapid stimulation of the presynaptic neurons that release glutamate

  2. spatially from the glutamate-releasing neurons and other neurons releasing an excitatory neurotransmitter that acts via an indirect mechanism

  3. spatially from the glutamate-releasing neurons and other neurons releasing the excitatory transmitter, aspartate

  4. spatially from the neurons releasing glutamate and other neurons releasing the inhibitory transmitter, GABA

  5. spatially from many postsynaptic neurons that release glutamate.

In: Biology

You have purified the peotide hormone that binds to the receptor below. To determine its amino...

You have purified the peotide hormone that binds to the receptor below. To determine its amino acid sequence you digested the polypeptide with trypsin and in a separate reaction you cleaved the polypeptide with cyanogen bromide. Cleavage with trypsin yielded 5 peptides that were sewuences by Edman degradation as shown in the following:
1. Ser-Leu
2. Asp-Val-Arg
3. Val-Met-Glu-Lys
4. Ser-Gln-Met-His-Lys
5. Ile-Phe-Met-Leu-Cys-Arg

the fragments were purified using high-performance liquid chromatography, HPLC, with a hydrophobic C18 column. PREDICT which fragment eould elute last from the column, providing the chemical basis for your prediction

In: Biology

Which of the following statements is/are true regarding the biological distinction of male and female? Check...


Which of the following statements is/are true regarding the biological distinction of male and female? Check all that apply.

Which of the following statements is/are true regarding the biological distinction of male and female? Check all that apply. Check All That Apply 

  • Only the male gamete is motile. 

  • The egg, or ovum, is unique to human females. 

  • The penis is the copulatory organ of the male. 

  • Human females lack a Y chromosome. 

  • Both ova and spermatazoa are considered gametes.

In: Biology

1. How is evolution important to current/furture medical practive (for practitioner and patient, with examples) 2....

1. How is evolution important to current/furture medical practive (for practitioner and patient, with examples)

2. Describe how evolutionary theory allows for a better knowledge about human behavior and how does this impact the understanding of various human behaviors that are diverse (with examples)

3. how does this have value to life. (with examples)

In: Biology

In a Harris poll of 514 human resource professionals, 90% said that the appearance of a...

In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. Construct a 99% confidence interval for the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. Also, find the margin of error.

In: Statistics and Probability

Contingency Theory offers a better way of managing change than either the Classical or Human Relations...

Contingency Theory offers a better way of managing change than either the Classical or Human Relations approaches.

Q1- Identify and discuss the different perspectives on managing change offered by:

- Contingency Theory:

- The Classical approach:

- The Human Relations approach:

Q2- Evaluate the benefits offered by Contingency Theory’s ability to adapt to situational factors ?

In: Operations Management

Reflect on the following questions in a 150-300 word response: How do cooperation and sociality in...

Reflect on the following questions in a 150-300 word response:

How do cooperation and sociality in non-human primates compare to humans? In what ways are they similar? In what ways are they different? What is the most surprising thing about cooperation and sociality in non-human primates to you?

Remember to cite your references, as needed.

In: Biology

You discover a mutant human who does not slowly replace alveolar air, but rather exhales her...

You discover a mutant human who does not slowly replace alveolar air, but rather exhales her entire lung volume with each expiration. Clearly the mutation makes collapsing the alveoli inconsequential. Compared to a “normal” human, what difference(s) would you expect to find in her blood gas concentrations?

In: Anatomy and Physiology