3 years ago

The brain's _____ nucleus regulates the body's circadian rhythms.

1 answer:

4 0

The brain's suprachiasmatic nucleus regulates the body's circadian rhythms. The suprachiasmatic nucleus is a minute region of the brain located in the hypothalamus above the optic chiasm, the circadian rhythm is the 24-hour cycle of organisms, related to sunlight and temperature.

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Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows

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Answer:

Left amount of Polonium-210 after 115 days will be 4.5927 microgram

Explanation:

We have given initial mass of Polonium-210 $N_0=10microgram$

Decay rate x= 0.502% = 0.00502

Time t = 115 days

We have to find the left amount of Polonium -210 after 115 days

We know that left amount is given by

$N=N_0e^{-xt}=10e^{-0.00502\times 115}=4.5927microgram$

So left amount of Polonium-210 after 115 days will be 4.5927 microgram

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3 years ago

According to research on adherence to exercise programs, what percentage of individuals starting an exercise program will likely

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More than 50% will drop out

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Can someone match these for me? Please and thank you

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13. H

14. F

15. D

16. A

17. E

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20. G

Explanation:

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2 years ago

The broadest classification level for organisms is

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Answer:

kingdom

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kingdom is the broadest taxonomical classification

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3 years ago

Which type of mutation never causes a change in the function of the protein encoded by the mutated gene?

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Frame-shift mutation

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