An example of a communicable disease is
1 answer:
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Answer:
For Question 9 I'm not sure if you were taught in class but there is a chart to use called a Punnett square.
Explanation:
So for Question 9 use a Punnett square. Then Question 10 should be something about the mixture because since its a black and tan cat being mixed to make a tabby patterned cat you have to in your own words describe the mix. Hopefully this helps good enough.
Given question is incomplete. Complete question has been attached.
Answer:
C. Excessive potassium has diffused out causing hyperpolarization.
Explanation:
The nerve action potential can be divided into following stages:
- Stimulus is detected by the cell in resting stage.
- Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
- After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
- The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
- After a while potassium channels close and membrane returns to its resting stage.
In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct.
