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The process by which light hits the back of the retina (i.e. the pigmented layer) and causes a chain of events that results in action potentials travelling down the optic nerve to the central nervous system has several steps. Please explain those steps in your own words. Be sure to discuss the components of the photopigments, the conformational change that one of those components undergoes in light vs. dark, the cellular signaling that the photopigment initiates, and how three neuron types daisy-chain onto each other to elicit action potentials in the optic nerve when exposed to light.
describe the mechanism responsible for the cessation of lactation when a mother weans her baby.
The chemical equation FeS --> Fe + S is anexample of this kind of reaction. Potential energy can be illustrated by which ofthe following examples?
Use the momentum balance method and derive the flow rate of a Newtonian fluid flowing across a cylindrical tube driven under pressure of rate change if the tube diameter decreases by half?
Describe the body's mechanisms for controlling blood glucose levels under normal and stress conditions.
Why is the maintenance of homeostasis especially important during development of new humans within the bodies of their mothers? What can go wrong if specific homeostatic functions are disrupted?
Write out the reactions of the glycolytic pathway starting from glucose to pyruvate. Starting with radiolabeled glucose labeled in the C1 position
What is the expected phenotypic ratio of a cross between eggplants of the genotypes CC gg pp x Cc GgPp?
1 why are enzymes critical to the function of cells? that is why not simply let chemical reaction occur without
Explain the relationship between pH and the relative concentration of hydrogen and hydroxide ions in a solution. Explain how excessive vomiting causes metabolic alkalosis and explain why normal saline can be used to correct it.
Many infectious diseases are becoming difficult to treat because of bacterial resistance to antibiotics. Populations of bacteria can become resistant when they are exposed to an antibiotic. What is the best general explanation for how this occurs?
Indicate whether the following outcomes of cell division are observed in mitosis only, meiosis only, or both mitosis and meiosis. DNA is replicated prior to cell division.
What senses are affected by the cranial and facial bones that protect and support the sense organs? At theend of mitosis how many new cells will be present? Human activity uses as much energy as all of Earth's other multicellular combined?
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