Explore BrainMass

Human Biology

Single invertebrate and description of homeostasis

Choose a single invertebrate and describe how is carries out its homeostasis with respect to water and salt balance. Provide a detailed drawing or image (reference source) to illustrate your answer. please include diagrams or pictures may be right from the web. Please look at the attached diagram, assuming that is along the

Synthetic and Complex Media; Methods to Grow Anaerobes

1. Which of the four media below are synthetic medium and which are complex media? 2. Which of the four media below are used to grow autotrophs? Which media are used to grow fastidious microbes? 3. Define nonfastidous? 4. List all the methods that can be used to grow anaerobes? See attached file for full problem

Biology: Homeostatic Control

1. What is the human internal pond? 2. Define homeostasis. 3. Define physiology. 4. Explain from a holistic viewpoint how all homeostatic control is carried out within animals. 5. Explain the concept of negative feedback when it is applied to homeostatic control. 6. Provide a detailed example of the homeostatic process

Dilution Series

1. If the original culture contains 5 x 10 ^9 cfu/ml, how many cfu/ml are in each tube? How many colonies are on each plate? 2. If tube C contains 60,000 cfu/ml, how many cfu/ml are in the original culture, how many cfu/ml are in the other tubes, and how many colonies are on each plate? 3. How would you inoculate a plate t

Overdose of insulin

What would you do to help a friend who had inadvertently taken an overdose of insulin? Why should your solution be beneficial?


What about a carbohydrate molecule makes it a good source of energy? What is it about the structure of a lipid that makes it good for building cell membranes?


Can you describe the factors that affect growth and their relevance when considering the repair of damage to musculo-skeletal systems?


Figure 1 shows several audiograms (otherwise known as auditory threshold curves). This is a method of describing the sensitivity of the ear to different sounds. The pitch or frequency of sound is measured in units called Hertz (Hz). A pure tone of any given pitch can be generated at different levels of loudness. Loudness describ

Professional Sport Biology Competition

Professional sport competitions are highly competitive. Athletes sometimes search for advanced technology and medicine for performance enhancing solutions. The protein, creatine, is a highly controversial supplement available to athletes wanting to increase performance. Creatine is a natural substance produced in the body. It

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.