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Human Biology

Ulcerative colitis

Gas sample taken from the lumen of the large instestine of person suffering from the disease ulcerative colitis were founf to contain 100 times the level of NO as compared to those taken from controls. What does this tell you about the probable nature of the disease?

What is a superantigen?

Looks at what superantigens are and why they are produced by some pathogens. Inlcudes examples.

What is a lymphocyte?

An introduction to B and T lymphocytes, how they develop and how they carry out their function. Appropriate for high school or first year college.

What is a prion?

This answer introduces prions, their multiple forms and their role in infectious and non-infectious diseases of humans, cows, sheep and deer.

Human Biology

1. The secretion of the bicarbonate component of pancreatic juice is timulated by a. cholecystokinin b. gastrin c. enterocrinin d. secretin e. GIP 2. Calcuate the effective filtration pressure from the following data: Glomerular hydrosstatic pressure = 60 mm Hg Blood colloid osmotic pressure = 28 mm Hg Capsular hydros

Animal kingdom

Starting with Phylum Mollusca(Clam, Squid) through the Phylum Annelida (Earthworm) and the Phylum Arthropoda (Grass Hopper/Grayfish) all the way through the Phylum Chordata(Perch) compare the specimens. Respiratory organs: what would the appearance of these be in each speciman. Briefly what would the advances noted from one P

Livability of a city

Any help and direction will be much appreciated. 1. choose a city to research. CITY CHOSEN IS MISSOULA MT 2.Evaluate how "livable" your city is. 3. determine livability. 4. Determine, in your opinion, if the city can be considered livable. 5. Justify your opinion based upon the information gathered. 6.For any items t

Fermentation for Carbohydrate Solutions

Which carbohydrate solution (molasses, glucose, or sucrose) would a yeast ferment to the greatest extent? 5ml yeast 5ml Molasses 7.5 ml yeast 2.5 ml Molasses 0 yeast 5ml water 5ml molasses 5ml yeast 5 ml water 5ml yeast 5 ml Glucose 5ml yeast 5

MHC

A) Explain what are the differences between H2-Kk and H2-Dd? b) How can you predict if a given protein breakdown product (peptide) can be presented by HLA-A2? Please give an example.

Immune System Cells and Function

Hi, I need assistance with the following questions. I need references provided so that I can understand the responses. Thanks for your assistance. 1.The immune system is composed of several types of cells whose coordinated, concerted effort is required for screening, identification, and eventual purging of microbial invasion

The Central Visual System

Please answer the following 20 multiple choice questions. 1) The majority of the refractive power of the eye lies at the level of the A) Lens B) Cornea C) Retina D) Fovea 2) All of the following are specialisations of the fovea EXCEPT A) Absence of blood vessels B) Pus

The Eye - Part 2

Please answer the following five multiple choice questions. 1) The only cell that has a axon that leaves the retina is the A) photoreceptor B) bipolar cell C) ganglion cell D) amacrine cell 2) Rods are much more sensitive to light than cones because A) Rods project directly to g

The Eye, Part 1

Please answer the following five multiple choice questions. 1) Which cells actually capture the light energy within the eye? A) Retinal pigment epithelial cells B) Photoreceptors C) Bipolar cells D) Ganglion cells All humans have a blind spot in their eye because of the presence of

VO2 max

Please explain in detail what is meat by VO2 max.

Seasonal Affective Disorder and Circadian Rhythms

Explain why people in Washington State are often affected with Seasonal affective disorder in the winter using general knowledge of circadian rhythms. And, explain how can Seasonal Affected Disorder can be treated.

Urinary System

Complete the paragraph with the correct term listed below (some may be used more than once). The body gains water by absorbing water form the slurry in the lumen of the small intestine and from (1) ______ during condensation reactions. The mammalian body loses water mostly by excretion of (2) ____, evaporation through the

Endocrine

Every time you take a breath, you are (1) _____ the respiratory surfaces of your lungs. Each lung has approximately 300 million tiny thin-walled outpouching air sacs called (2) ____. Inhaled air dead-ends in these (2), each of which is surrounded by a network of pulmonary (3) _______ into which oxygen from air diffuses and is

Endocrine

Matching: Match the following conditions to their correct characteristics. 1. ___ pituitary dwarfism A. affected adults are proportionally similar to average-size people but larger. 2. ___ gigantism B. affected adults are proportionally similar to average-size people but much smaller. 3. ___ diabetes insipidus C. excessive

REproduction

A. nutrition B. infections C. prescription drug D. alcohol E. cocaine f. cigarette smoke G. anti-acne drugs H. all of the preceding threats 1. About 60-70 percent of newborns of these women have FAS. 2. In the case of rubella, there is a 50 percent chance of some organs won't form properly. 3. In cases of exposure to

Partial pressures of gases in blood

When our professor was teaching this subject she kept refferring to how this correlates to atmospheric pressure. Others in the class and myself asked her to be more specific but, it did not help. Can this be explained a little better, just how does pressure of gases in blood correlate with atmospheric pressure? Can you explai