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Human Biology

AXONS at a Distance

What is a 'target' and how does it exert an effect on axons at a distance? Can you give me examples of targets and the area of the cells that is targeted?

Serial dilution problem

You have decided to determine how many microbes are living on the lettuce in the salad bar at your favorite restaurant. You place 1 gram of lettuce and 99 mls of water in a blender and blend the mixture. This is sample A. You then transfer 1 ml of this dilution into to another that contains 9 mls of water. This becomes sampl

Circulatory and Lymphatic System

Lymphatic system 1. Bean shape lymphatic organs found along lymphatic vessels are called... a. lymph nodes b. medullary cords c. germinal centers d. cistema chili 2. In innate immunity a. each exposure is very specific b. previous exposure are remembered c. each exposure elicits approximately the same type of respon

Earth's Carrying Capacity

Technology has increased the Earth's capacity to support more humans, but it has also placed this increased capacity at risk. Please list three or four major ways that the Earth's carrying capacity has been threatened and give support for each answer. Thank you.

Gulf of Mexico problem

(See attached file for full problem description with proper symbols) 1A. An island in the Gulf of Mexico is approximately circular, with a radius of 5 kilometers. There is no emigration or immigration. In a mark-recapture study of an anole population, 115 anoles were captured, marked, and released. In a second capture, 175 s

On Energy

Can you help put me on the right track with these? Many biological reactions proceed at far too slow a rate to make them metabolically effective. Is it the presence of enzymes that lowers the activation energy so that these reactions can take place? If not, then what? ATP is considered a short-term form of energy for a

Sugar is explored.

This job provides me with a simple explanation for how eating too much sugar makes us fat.

Energy Capacity to do Work

By definition, energy "is the capacity to do work." It involves either manufacturing of molecules, moving objects or generation of heat and light. How does it flow within its cycle? What happens when a living being takes in too much or not enough energy? Is it possible to exceed our need for energy intake for ourselves and our a

Effects of fracture on micturition are noted.

What effect would a fracture of the lower spine and transaction of the lumbar region of the spinal cord have on micturition? How would micturition be controlled from now on? Will the need to void be felt? Will there be dribbling between voidings?

Rigor mortis

1. After death, the muscles of the body become very stiff and inextensible. This phenomenon is referred to as rigor mortis, and the muscles are said to be in a state of rigor. (a) Explain the biochemical basis of rigor mortis, in terms of the interaction of actin and myosin; ie, where in the contraction cycle is the

Problem Set

1 FSH stimulates the production of estrogen in this gland. 2 Functions in setting biological rhythms. 3 Produces and secretes testosterone. 4 Produces glucocorticoids. 5 Facilitates maternal behavior in mammals. 6 This hormone stimulates the release of two hypothalamic hormone. 7 A surge in this hormone triggers ovul

Test of Semantic Similarity

1a) In a test of semantic similarity and at a target stimulus duration of D -10ms, which of the words 'bird' and 'fish' would be the most likely choice (give approximate %) in response to presentation of the target word 'hen'? This job explains the answer with reference to figure 4.3 below. 1b) In a test of semantic similari

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

Effect of concentration on Urease Activity

I need some help understanding the relationship between enzyme and substrate concentration insofar as measurable enzyme activity is concerned? What would be the results? Effect of Temperature on Amylese Activity. What do you think would be the optimum temperature for Amylase?

Uncoupling of Electron Transport by MDMA

MDMA is a popular club drug. It works on a different part of the electron transport chain, however. It is an uncoupler, which means that is still allows energy to be produced but not used by the body. Where will this energy go? How will this manifest in a person that has taken the drug?

Human Biology: 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

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