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3 years ago

The flynn effect is most likely due to changes in _____.

Biology

1 answer:

Softa [21]3 years ago

5 0

Answer:

Nutrition
Education
Health.

Explanation:

The concept of Flynn Effect refers to the change in average IQ levels of the people with the passage of time. This phenomenon was first observed by James Flynn and thats why was named after his name.

By IQ scores, the flynn effect donot means the increase in only the numbers of IQ scores or marks, it refers to an increase in the average IQ of whole population or the next generation of any population.

Reasons for change or increase in Flynn Effect :

Although Flyyn effect agrees on the fact that intelligence is something we inherit from our parents however IQ is an absolute number which can be increased because several factors affect it.

Health and Nutrition:

Studied have reported that better nutrition is the key to better health. Better health along with good services and parental care can lower the extent of IQ disabilities in children.

Education

A better and greater access to education means a more number of people can go to schools and stay for a longer periods there. This overall can have positive effects on the IQ levels of children.

Hope it help!

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Option A.

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hyperpolarization
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hyperpolarization
depolarization
hyperpolarization
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depolarization

Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. This is known as depolarization.

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. This is called repolarization.

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of hyperpolarization that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

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Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).

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