Researchers often study the evolution of viruses by grouping them into clades based on biochemical traits. Even though viruses are not alive, they can mutate every time they infect a host, so their genetic material changes quickly. What can we infer from this information about a highly infectious virus, such as COVID-19?
Present a figure showing an analysis of spontaneous activity. Include a Spike Discriminator window screenshot, with 2-3 different units (if these can be distinguished), and part of the corresponding Chart view that includes at least one spike from each unit (label one of each). In the figure legend, include details of any filtering applied to the data, and the parameters used to define the spike sets (contour or template, fit tolerance if template). 2.2 (5 points) What factors influence spike amplitude/shape in this type of recording?
Is there a preferred direction of bristle movement? Is the spiking response different in different directions? Is the response tonic (sustained during a steady deflection is maintained) or phasic (responding to movement only at the onset or offset of a stimulus? 2.4 (5 points) If you can evoke activity from different bristles, are the evoked spikes different in amplitude? If there is spontaneous activity, can you tell if the evoked activity is an increase in firing frequency of one of the spontaneous units, or a new unit? 2.5 (5 points* *) Do you see a response (to flexing/extending the leg)? Is it phasic or tonic? Does the response differ between flexion or extension? How does the response change as you extend the leg so that it is completely extended or flexed? 2.6 (10 points) Propose and describe some different mechanisms that might underlie the phasic responses of mechanosensory bristles. Consider all stages of transduction and encoding. 2.7 (5 points). If your data (use example data files if not) showed both spontaneous and stimulus-evoked activity: Did the neurons that fired stimulus- evoked action potentials also fire spontaneously? – provide evidence to justify your answer.
The ATP that is generated in glycolysis is produced by substrate-level phosphorylation, a very different mechanism than the one used to produce ATP during oxidative phosphoryl Phosphorylation reactions involve the addition of a phosphate group to another molecule Sort the statements into the appropriate bin depending on whether or not they correctly describe some aspect of substrate-level phosphorylation in glycolysis. View Available Hint(s) Reset Help An enzyme is required in order for the The enzymes involved in ATP One of the substrates is a molecule reaction to occur synthesis must be attached to a derived from the breakdown of membrane to produce ATP glucose The phosphate group added to ADP to A bond must be broken between an make ATP comes from free inorganic organic molecule and phosphate phosphate ions. before ATP can form correct statements incorrect statements
Which of the following is best description of biological molecules?
a. Any molecule found inside a cell.
b. Molecules, typically with a carbon framework, that are made by living organisms.
c. Molecule that contain covalent bonds.
d. Molecules that are explosive.
Explain why global warming is likely to increase threats to biodiversity posed by habitat loss and fragmentation. What are 2 ways that deforestation contributes to the increase of greenhouse gases in the atmosphere?
EtiopathogenesisCausesmolecular events-normal gene products to mutant cellular events – normal to diseased of Huntington’s Disease – how the disease occurs and is spread, explain each part in a scientific manner.
physiology of organ systems – normal to diseased
progression of the disease, complications
Describe the reactants and products of the Calvin cycle, explaining where each reactant comes from and where each product goes.
Explain how Theodor Engelmann was able to determine that only certain wavelengths of light are used in photosynthesis.
Describe the light reactions and compare the process of Adenosine triphosphate production in the thylakoid membrane of chloroplasts to that in the inner mitochondrial membrane
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