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Human Biology

please help me understand the following dilution schemes

Consider the following dilution scheme: A. 1oomL lake water B. 5mL lake water into 45 mL diluent 0.1 ml - colonies TNTC C. 1mL from B into 9ml diluent 0.1 ml - colonies 425 D. 0.5mL from C into 4.5 mL diluent 0.1 ml - colonies 58 E. 2mL from D i

Biology Lab - Serial Dilutions and CFUs

One mL of yogurt was added to 99mL sterile diluent. Decimal (1/10) dilutionswere then made, and one-tenth mL was plated in duplicate on plate count agar. After incubation, the following colony counts were made: Dilution colony count using the data, calculate the # of cfu's per gram of the yogurt (1mL of yogurt = 0.4g) init

Fungi as Human Pathogens

(1) Fungi as human pathogens (2) Fungi and their symbiotic role (3) Fungi in commercial applications.

Could someone please help with the following,please provide sources

(1) There are two circuits of blood flow to the body. Describe these two circuits in general terms. Beginning with the heart, which side of the heart pumps blood to each of the circuits? (2) A separate circuit involving the coronary blood vessels serves the heart. Describe the vascular route of coronary circuit, and suggest

Health Science

Your success at investigating the pattern of unusual student absences has led to your team being put in charge of the entire Health Department investigation. Your boss, the Director, has been working with school principals and parents and has sent you the following e-mail:

Rapid Population Growth and Consequences

World population growth is an often discussed topic. At one time, there was a fear of overgrowth and the book, The Population Bomb warned of doom and gloom. What are some key issues with a rapidly growing population?

Carbon Footprint and Nomadic Cultures

The carbon footprint left by people living in highly developed nations is astoundingly high. Some cultures, on the other hand, leave little, if any, carbon footprint. For instance, Nomadic cultures on many continents follow herds of migratory animals (e.g., the !Kung San of the Kalahari). Such people never settle permanently, an

Pathogenesis and skin micro flora (microbiata)

Many bacteria colonize human skin; these organisms are called the normal microbiata. Based on your knowledge of human skin, why do you think that these bacteria do NOT usually cause skin infections, yet can quickly cause infection when the skin surface is broken, as in a wound?

Characteristics of Selective and Differential Media.

Selective and Differential Media are both used in microbiological and clinical settings to aid in the identification of bacterial groups. List two specific media that have both selective and differential characteristics and specify the selective and differential agents in the media. Also describe how the results are interprete


Original, nothing from library please. I have to cover this topic: Select one specific disease associated with this organ system and explain how it affects the system and human health which is Respiratory. Usung this important human organ systems: Respiratory The human body is composed of a number of organ systems

Human circulatory system and the impacts of atherosclerosis

Original info only not from library please. I have to cover this topic: Select one specific disease associated with this organ system and explain how it affects the system and human health. Choose one of the three important human organ systems: Circulatory, Respiratory, & Endocrine. The human body is composed of a num

Prostate Cells and Androgens

Prostate cells usually require testosterone and other androgens to survive. But some prostate cancer cells thrive despite treatments that eliminate androgens. One hypothesis is that estrogen, often considered a female hormone, may be activating genes normally controlled by an androgen in these cancer cells. Describe one or more

Greenhouse gas politics

Why do you feel there is debate about policies to reduce greenhouse gas emissions? How can science help resolve the debate? please list references, thanks...


I am having problems with this assignment. Please help me. This assignment deals with the characteristics of urine and abnormal urinary constituents. Please help me with these topics on this assignment paper.

Problems in Electrophysiology

Part 1. Complete problem 1 from the Problems in electrophysiology 2006 handout. You can find it in the electrophysiology handouts document in the course documents folder. Use the "RT/F ln" form for the GHK equation as was shown in class but multiply RT/F by 1000 to convert volts to millivolts. (Remember that the Nernst equation

Type 2 diabetes and kids

Type 2 diabetes is becoming increasingly common in the United States. The primary risk factor for type 2 diabetes is a history of obesity. Statistics show that children are becoming obese at an alarmingly high rate, and this correlates with increased rates of type 2 diabetes. When young children become overweight, the problem i

Rapid population growth

Many people regard the rapid population growth of developing countries as our most serious environmental problem. Others think that the population growth in developed countries, though smaller, is actually a greater threat to the environment. What kinds of problems result from population growth in developing countries and in in

Osmotic Pressure of Human Blood

The freezing point of human blood is -0.56°C. Assume that the density of blood is 1.0 g/ml and that blood is an aqueous solution of some single solute species. Calculate the osmotic pressure of human blood at body temperature, 37°C.

Type II immunopathology

Some Type-II immunopathology mediated autoimmune diseases have manifestations in multiple different organs. Discuss the mechanisms for type II immunopathology, and how antibodies to one single antigen can cause damage in multiple sites throughout the body.

All Babies Fingerprinted at Birth Controversy

In 2005, A German politician proposed that all babies should be genetically fingerprinted at birth. Do you agree? What does genetic fingerprinting mean? Who should control the information obtained and who should have access to the information. What are the advantages, disadvantages, and potential problems associated with this pr

Low levels of metabolite

A child approaches you complaining of progressive muscle weakness and inability to keep up with friends in athletic endeavors. You decide to take a muscle biopsy and send a sample out for analysis of some key metabolites. You receive back the following data. (You can neglect units; simply compare the patient's values with the no

Disease probability

A woman heterozygous for Huntington diseae reproduces with a man without the condition. Huntington disease is dominant; what are the chances the child will have the condition? The chances the child will not have the condition?

Ingredients of Fat Substitute Products: Chip experiment

Select two sets of products from your daily diet such as butter/salad dressing and find similar products that use fat substitutes. Make a list of all the fat substitutes that you find listed on the ingredient labels of the products. Indicate what type of fat substitute you found (like the synthetic fat Olestra). Determine how ma

An antioxidant's function

Within an response, discuss the following concepts: an antioxidant's function; free radicals and their effect on the human body; sources of vitamin C; optimal delivery system for vitamin C; and precautions for use of vitamin C

Analyzing Food: The Nutritional Components of Grapefruit

Details: Our bodies break down food through the digestive process. Let's investigate the chemical composition of the foods we eat. The USDA Nutrient Data Laboratory has posted a resource through which we can investigate the chemical composition of foods. Go to the USDA Lab Link at USDA Nutrient Data Laboratory.