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Human Biology

Better understanding of AIDS

What is the method for attachment for HIV (key receptor)? What is the principal target cell? Why hasn't a vaccine been developed?

Carbonaceous oxides

Some one mentioned carbonaceous oxides. Most of us would say carbon dioxide but the way you said it sounded more erudite. Industry, vehicles, and power plants put out a lot of these oxides which form carbonic acid when it combines with water. It's a weak acid when compared to sulfuric acid but it is produced in huge quantities

American Bison

In 1800 the estimated American Bison population was ten million, with a range over much of what is now the United States and lower Canada. By 1900 there were fewer than 1000 left, largely due to human actions. We drove the passenger pigeon to extinction, nearly killed off the California Condor. The Bald Eagle was nearly wiped

CPAP, isosorbide mononitrate, B-antagonists in CHF

I need help with the two following questions in some detail. Need about two sides for each question. Also not all the patient data may be relevant to answer the questions, as there were other questions that came with the patient data, I may also need further explanation and help with those questions which are in relation to the

Enzymatic Reactions

In the presence of the enzyme alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as you increase the concentration of the substrate, acetaldehyde. Eventually the rate of the reaction reaches a maximum, where further increases in the concentration of the substrate has no affect on the reaction rate.

SKIN REPAIR Homeostatic Nature

Can you explain to me the homeostatic nature of skin repair and how stress or poor nutrition affect the skin's ability to heal a wound?

Blood Test Results

Subject A is 19 year old student, 1.72 m tall and weighs 53kg. Subject A has been suffering from severe diarrhoea, stomach cramps, flatulence, bloating and stomach pain. He has been suffering from tiredness and generally feeling run down. Subject A is non drinker, non smoker, often skips breakfast but always has cooked m

Concept map on metabolism

Create a concept map using the below words. Provide a summary of your map, including how the words are related to each other and the overall concept. Hexokinase Glucose Glycolysis Krebs cycle Electron Transport Chain Pyruvic acid Acetyl - CoA Fermentation Lactic acid Ethanol Cytochrome oxidase ATP NADH

Biofeedback

Describe the basis and uses of biofeedback training.

ANS fibers

Which ANS fibers release acetylcholine? Which release norepinephrine?

Sympathetic activation

Indicate the results of sympathetic activation of the following structures: sweat glands, eye pupils, adrenal medulla, heart, lungs, liver, blood vessels of vigorously working skeletal muscles, blood vessels of digestive viscera, salivary glands. Which of the effects would be reversed by parasympathetic activity?

Animal Behavior - Reproductive strategies

Outline the theoretical basis for the typical female reproductive strategy. Outline the theoretical basis for the typical male reproductive strategy Sometimes the typical reproductive strategy is reversed. Give an example. Include what is usually different about the reproductive process in those species that results in thi

Cerebrospinal Fluid

(a) How is cerebrospinal fluid formed and drained? Describe its pathway within and around the brain. (b) What happens if CSF is not drained properly? Why is this consequence more harmful in adults?