Define positive feedback and describe why they are not necessarily beneficial to organisms. Include a description of
the changes associated with severe blood loss and circulatory shock to substantiate your answer. What will be an ideal response?
Concepts to Consider: Positive feedback systems are rare, but when they occur the response
to the stressor leads to a further deviation from the steady state or set point. That is, the
response intensifies rather than reverses the initial change and therefore they do not maintain
homeostasis. Hemorrhage is an example of a stressor that can result in a significant loss of
blood. The loss of blood causes a drop in blood pressure, and less blood will circulate back to
the heart. Heart function declines along with a decrease in cardiac output (volume of blood
per contraction of the heart). The overall result is therefore a further drop in blood pressure
associated with this decrease in heart output.
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When artificial methods are used to modify living organisms to produce new compounds or perform new functions, what is this process called?
a. bioremediation b. bioradiation c. biotechnology d. biotechnicality
What is the role of mast cells in the inflammatory response?
What will be an ideal response?
The ________ is the space behind the nose and the mouth, which most people call the throat
Fill in the blank(s) with correct word
Ian Wilmut successfully cloned Dolly the sheep from a fully differentiated sheep cell. This type of cloning is known as
A. stem cell cloning. B. reproductive cloning. C. therapeutic cloning. D. gene therapy cloning.