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A pH profile shows that the pH optimum for an enzyme is from pH5 to pH9. Assuming that the pKas for the side chains of the amino acids are unaltered from their normal values, propose an amino acid which must be in a deprotonated state for the enzyme to be active and propose an amino acid which must be in the protonated state for the enzyme to be active.
Some sensory neurons in our bodies generate action potentials in response to pressure or movement, allowing us to feel things through our sense of touch.
It is frequently when the environment changes in some way that is unfavourable to an existing population that the organisms begin to reproduce sexually. Explain the importance of this switch from asexual to sexual reproduction.
ATP synthesis in chloroplasts is very similar to that in mitochondria: Electron transport is coupled to the formation of a proton (H+) gradient across a membrane.
Think about a grass that grows back to mid phase in fifteen days and low phase III in 30 days after grazing down to the minimum height for efficient re-growth and plant survival.
Describe what you observed in your cheek smear wet mount, direct stained slide, and indirectly stained slide. What were similarities and differences. Describe what you observed in your yeast wet mount, direct stained slide, and indirectly stained sli..
Barbiturates cause hypoventilation that is the slower-thannormal rate of breathing, since they suppress the respiratory centers in the brain. What happens to the red blood count of a habitual user of barbiturates? Explain in details.
How the glucose and phospholipids would be distributed after you let the mixture settle for 30 minutes. How may this happen considering natural cleaning mechanism of the respiratory system.
Normal cells greatly slow their rates of cell division after filling culture dish with layer that is one cell deep. If a circular group of cells is removed from the middle of the filled culture dish.
Assume you have been examining a new drug that binds to PPAR? and produces its beneficial effect (increased insulin sensitivity). When you give this chemical to mice, you see kidney damage.
EDTA is a synthetic amino acid which body perceives as a foreign object. It is therefore delivered to kidney and and removed from body through urine.
What two groups of organisms live symbiotically to form lichens? Of what benefit are mycorrhizal fungi to plants? How does this symbiotic relationship benefit the fungus.
Anatomical attributes that are reduced and functionless in organisms but related to functional organs in related organisms are termed. Vestigial. Homologous.
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