Explain why globin alone or heme alone is not effective as an oxygen carrier.

Answer: The spellings are wrong. It should be globulin and heme.

Globulin alone is not effective as oxygen carrier because globulin does not have oxygen binding groupband cannot bind oxygen.

Heme alone is not effective as oxygen carrier because the iron present in heme can be oxidized easily and it cannot bind to oxygen.

Explanation:

Globulin are proteins that are present in the blood of humans. It is an oxygen carrier.

Heme is iron containining compound that form the non protein part of haemoglobin and other biological molecules. Heme are responsible for carrying oxygen in the blood.