11)B 12)D 13)D 14)A 15)D 16)A 17)A 18)B 19)A 20)B 21)B 22)C
Antarctic soil differs from other soil because it is formed from volcanic rocks
The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases).
Answer:
Explanation:
The kidneys are organs of the urinary system - which remove excess water, salts and urea. Blood is transported to the kidney in the renal artery . The blood is filtered at high pressure and the kidney reabsorbs any useful materials such as glucose, salt ions and water for the body!
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