Those are protein channels they allow certain solutes in the membrane and inhibit solutes that are not needed and there’s many type of protein channels
I believe that the answer you are looking for is "microfossils".
Hope this helps you!
Answer: 4282.928 = 4283 years
Explanation:
Data given;
Carbon 14 half life = 5740
No (initial radiation) = 0.230 Bq/g
Nf (final radiation) = 0.137 Bq/g
First we find the decimal fraction of the remaining half life of the carbon 14
k = No / Nf
k = (0.137 / 0.230) = 0.595652
So to find how many half-life has elapsed, we say
(1/2)^n = k
(1/2) ^n = 0.595652
Therefore
n log 0.5 = log 0.595652
n = ( log 0.595652) / ( log 0.5)
n = 0.747457
To get the elapsed time or how old the sample is;
We say
Carbon 14 half-life × n
5730 yrs × 0.747457
= 4282.928
= 4283 years.
So the sample of the wood is 4283 years old.
<span>Interstitial diffusion occurs more rapidly in metal alloys because these atoms are smaller, and therefore they are more able to move and vibrate as compared to atoms that are larger and less able to migrate.</span>
The answer is A. Differentiation
