1. Explain the role of FSH and LH in the reproductive systems of humans. What does each hormone do, and what parts of the reproductive tract are affected?

2. Why is the action potential considered an "all or nothing" event?

3. Describe two ways in which the nervous and endocrine systems interact to help regulate body systems.

Please answer these 3 questions and please write shortly Thank you.

are polysaccharides formed by hydration or dehydration reactions?

What is the classification and history of Providencia?

What is the significance of it? How does it relate to science, environment, or health?

Is it pathogenic? If so, what does it cause and what is the treatment? Who does it affect? What part of the world is it found in?

Is there anything about Providencia that makes it unique and interesting?

Why are antibiotics ineffective against viral infections?

1. Amino acid symbols and properties. Complete the table. Spend several minutes looking at Table 3-1 first. Then try to fill in the below by memory. Then try to remember those you forgot. The one and two letter codes are how parts of genome sequence are reported. You will need to understand this language to interpret these data, which are increasingly used in medicine and research. These symbols are used in many subsequent lecture as well.

For this discussion assignment, select a fungal, helminth, or parasitic species of your choice and prepare an initial post describing the optimal growth conditions, location, and unique characteristics which helps the microbe adapt to this niche. Include images if possible.

Is there any therapeutic application for this microbe in healthcare?

Please no picture or written responses - only typed answers

PARASITOLOGY QUESTION:

Amoeba case study

Calatagan is a third-class municipality in the province of Batangas, Philippines. It has a total population of 30,500 with a total of 8 barangays. The municipality’s major revenue comes from agriculture and aquaculture. A section of the population is employed in “Ang Pulo,” an island housing a mangrove forest conservation park located in the northeast. Some residents of Calatagan are settled along the major highway that connects it to neighboring municipalities, while some live further inland, usually near farms. Major streets are cemented but small streets are not. Deep well is the main source of water but there is one water distillery station serving three barangays in the municipality. In the summer of 2005, there were 950 cases of a rare eye infection in one barangay that affected residents of different ages. The infection is characterized by severe pain and reddening of the cornea. Antiviral drugs where administered but the patients’ condition did not improve. There were also 1500 reported cases of diarrhea by the RHU. Stool examination results from specimens submitted by patients revealed an increase in WBC count. Strange crystal-like structures were also seen under the microscope in some of the stool specimens. The mayor of Calatagan ordered an immediate investigation of the probable cause of the cases.

Questions to answer:

1. Identify the probable cause of the incidents in Calatagan, Batangas. Justify. (provide references for your answers)

2. What could have been the sources of infection of the residents in Calatagan? Describe the probable mode of infection for each identified cause. Cite examples and references.

3. Briefly provide a possible plan of action on how to control the cases in Calatagan.

Describe the maternal age effect associated with down syndrome

how is the sequence specific primer (SSP) PCR and multiplexing method used to analyze HLA type carried out, what are the steps?

Organisms that may be part of the normal bacterial flora, but can--under certain conditions--cause disease are known as ____________ pathogens.

The release of the contents of cortical granules, ________.

A. Occurs after a single sperm cell enters the egg.

B. In some animal species, causes the jelly layer of the egg to physically change and lift away.

C. Is the cause of a second reaction in which calcium ions sweep across the egg cell from the point of cell entry.

D. Both A and B describe the release of the contents of cortical granules . E. All of the above describe the release of the contents of cortical granules.

A heterotrophic cell encodes both the Pyruvate Carboxylase enzyme and the enzymes of the Glyoxylate Bypass. Contrast the reactions leading to oxaloacetate via both mechanisms, starting with PEP. In environments with low organic carbon, which reaction(s) would be favored for carrying out anaplerosis and why?

If no crossing over is present, how many unique gametes would an individual with the genotype AaBB have after meiosis