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Eddi Din [679]
2 years ago
8

Organisms that are well understood from a scientific standpoint and are often used in basic biological research are often called

________ organisms.
Biology
1 answer:
Aliun [14]2 years ago
4 0
Model organisms is your answer

Hope this helps : )
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The spontaneous action potential established in cardiac contractile cells is highly dependent on which of the following? A. The
Arada [10]

Answer:

E. All of the above

Explanation:

In cardiac contractile cells there is rapid depolarization, then a plateau phase and repolarization.

when an action potential stimulates the cell, voltage-gated channels open quickly commencing the positive-feedback mechanism of depolarization. This in turn raises the membrane potential to approximately +30 mV, and this closes the sodium channels. Next comes the plateau phase, where membrane potential declines relatively slowly due to the opening of the slow Ca2+ channels, allowing Ca2+ to enter the cell while few K+ channels are open, leading to K+ to exit. Once the membrane potential reaches approximately zero, the Ca2+ channels close and K+ channels open, allowing the exit of K+. The repolarization lasts approximately for a while and here is when the membrane potential drops until it reaches resting levels once more and repeats the cycle.

4 0
2 years ago
Determine whether the substances listed below are reactants or products of photosynthesis.
GREYUIT [131]
Water,Carbon Dioxide, and Chlorophyll are the reactants. Glucose, Oxygen, water are products. Water is a reactant and product.
6 0
2 years ago
A trait, such as height, has high heritability because much of the variation between individuals is the result of genetic variat
Len [333]

This is because the traits like height, are influenced by environmental conditions around the individual. For example, there are two children born to same mother. But one is given best facilities, nutrition and care, whereas other one is brought up by a poor family, which hardly get good food to eat. His condition is much worse than the first case. In such a situation, the former child will grow up healthy and fit, and will have more height than the later one. Although, both got genes from same parent, but the environmental conditions influenced the expression of those genes differently.

5 0
2 years ago
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45-year-old was admitted with sarcoidosis of both lungs. An extracorporeal perfusion of donor lungs, from an unrelated donor, an
larisa [96]

Answer:

The second code in this case is the procedure for perfusion

Explanation:

Extracorporeal perfusion is the process of diverting the patient's blood via an artificial circulatory device to enable the gas exchange (oxygen absorbed, carbon dioxide removed) to take place. Only medical experts should handle this procedure so as to avoid any and all undesired scenarios or negligence towards patient care.  

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2 years ago
How would signaling be affected if a mutation caused a g protein to replace gdp with gtp on its own without needing to be activa
Elan Coil [88]

Answer:

This mutation will produce a conformational change capable of maintaining the receptor continuously in its activated mode

Explanation:

G proteins are inactive when guanosine diphosphate (GDP) is bound, while they are active when guanosine triphosphate (GTP) is bound

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2 years ago
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