2. Which of the following is a CORRECT pairing of the RNA type and the description?
tRNA / contains codons which determine the correct amino acid sequence for a
protein
mRNA / formed from the DNA gene sequence with the help of RNA polymerase
O rRNA / formed in the nucleus and carries amino acids to the ribosome
mRNA / contains anti-codons which are complements to tRNA codons

ANSWER

mRNA - formed from the DNA gene sequence with the help of RNA polymerase.

EXPLANATION

mRNA contain codons which are complement to

tRNA anticodons.

rRNA formed in nucleolus.

tRNA carries the amino acid.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.