Thalassemias are hemoglobin disorders in which the production of alpha and beta chains are out of

balance. Indicate whether the statement is true or false.


T

Biology & Microbiology

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All blood cells originate from the

A. erythrocyte. B. leukocytic stem cell. C. eosinophilic stem cell. D. hematopoietic stem cell.

Biology & Microbiology

Excess glucose is converted into glycogen in

a. the pancreas. b. the liver. c. the thymus. d. the thyroid. e. none of these.

Biology & Microbiology

Phospholipase C catalyzes the reaction in which:a

IP3 is converted to DAG. b. PIP2 is split. c. a protein kinase is activated. d. calcium ions are released from the ER. e. DAG is converted to PIP2.

Biology & Microbiology

Which of these occurs during transcription?

A) The information coded in DNA is copied into mRNA. B) A DNA copy is used to direct the production of a polypeptide. C) A polypeptide is folded into a protein. D) Messages encoded in mRNA are used to build proteins. E) Protein processing is enhanced by enzymes.

Biology & Microbiology