All the following are characteristics of vitamin d except
a. it is activated by the liver and kidney
b. it causes the kidney to excrete less calcium in the urine.
c. its synthesis is enhanced by use of sunscreen.
d. it facilitates calcium absorption from the small intestine

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

In what ways does the study of human population differ from the study of wildlife ecology

Accuracy in the translation of mrna into the sequence of amino acids in a polypeptide depends on specificity in which of the following? 1) binding of ribosomes to mrna 2) shape of the a and p sites of ribosomes 3) attachment of amino acids to trnas 4) bonding of the anticodon the codon and the attachment of amino acids to trnas