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An athlete travels to the Colorado Rockies to train for an upcoming marathon. He runs 15 miles every other day and while breathing O2 deficient air. His blood O2 levels become lowered as a result. His kidney cells sense the reduction in O2 and secrete a hormone, erythropoietin into the blood stream. The hormone circulates to the bone marrow where it acts on stem cells. The stem cells differentiate into mature red blood cells which can carry additional oxygen.
1. What is the stimulus?2. What is the efferent pathway?3. What is the effector?4. Is this a negative or positive feedback mechanism? Explain your answer.
Compared with the normal region of DNA, what unique characteristic does the DNA replication origin have?
When you added primary antibody to the wells, what happened if your sample contained the antigen? What are the five basic processes of the digestive system?
If purple (P) is dominant to white (p) and axial (A) is dominant to terminal (a), and in a cross of white, axial to purple, axial the ratio of offspring is 3/8 white, axial; 1/8 white, terminal; 3/8 purple, axial; 1/8 purple, terminal, then what i..
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Specify where did the gases and elements come from?
Data from a dihybrid cross involving two linked genes. From these data, determine the recombination frequency between these two genes. P0s are homozygous.
Describe b riefly the role of HOX genes in brain development. If a twenty-five year old woman using Accutane to treat acne discovers that she is pregnant, what concerns do you have for the embryo/fetus?
Describe the factors that determine the major latitudinal climatic zones (the tropics, temperate zones, and polar zones).
What are two natural causes of DNA mutations, besides DNA replication errors. Briefly explain what happens to the DNA and how replication accuracy is affected.
Membranes are essential components of both prokaryotic and eukaryotic cells. Identify three molecules or types of molecules that are components of the plasma membrane in eukaryotic cells. Discuss the structure and function of one of these componen..
Determine which organ system are msot invovled with homeostasis and discuss the role of SNARE in exocytosis.
Hardy-Weinberg has 5 major assumptions; however none of these assumptions are ever met by a natural population. Why then, can we use Hardy-Weinberg to test if a population is at equilibrium?
Idea of scientific integrative medicine and relates them to the physiology of catecholamine systems and to pathophysiology of catecholamine related disorders.
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