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To make a nerve cell AP (action potential), the resting state (-70 mV) must move to at least threshold value (-55 mV). At this point rapid depolarization begins, the value shoots past 0 mV to the action potential "spike", and then declines back to resting state by repolarization. During depolarization sodium ions (Na+) rush in, and in repolarization potassium ions (K+) move out. There is a period where the value drops below -70mV, and this is known as hyperpolarization or the "overshoot".
Cancer patients undergoing chemotherapy are normally more susceptible to infections. However, a patient receiving an antitumor drug that inhibited cell division was resistant to salmonella. Provide a possible mechanism for the resistance.
Discuss the role of the functions of epithelia? What are cilia, stereocilia and microvilli? What roles do goblet cells play in epithelia? Why is the use of having exocrine or endocrine glands?
The electrons that chlorophyll loses to the electron transport chain are replenished by what molecules?
the bacterial toxins generated by the infecting organisms can trigger complex reactions of the immune system including
Identify a viral or bacterial infection not prevalent in North America. Explain "Bulimia Nervosa".
From a cell's point of view, what is the reason of a cell, and what is the purpose of a gene? From a gene's point of view (according to Dawkins), what is the purpose of a cell and what is the purpose of a gene.
discuss the means of gas exchange for lophophora.
What applications might the Scientific Method have to daily life? Give an example.
What is a biodiversity hot spot? Do some research, and identify such a place on Earth. What should be done to protect these areas?
Describe your goals and objectives for the sequence, what you expect to learn, and how this sequence will enable you to accomplish your academic
Create some excitement for your product or service. You need some way to communicate your product or service to the customer. For this part of the project you will create a flyer that targets the general business community.
q. some caminalcules went extinct without leaving descendents. in the real world what factors may enhance or reduce the
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