The Alternate Origin of Pyrrole Rings in Purple Bacteria Consists

question 69

Multiple Choice

The alternate origin of pyrrole rings in purple bacteria consists of:

• A) the condensation of glycine and succinyl-CoA to produce 5-aminolevulinic acid
• B) reduction of glutamate (in tRNA-glutamate), which is rearranged to 5-aminolevulinic acid
• C) an unknown reaction
• D) demetalation of coenzyme B₁₂
• E) none of the above

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Definitions:

Phalanges

Bones in the fingers or toes.

Mineral

In the diet, an element that is required in small amounts for normal metabolism.

Bones

Hard, dense connective tissue that forms the structural elements of the skeleton in vertebrates, providing support and protection.

Motor Neuron

Neuron that controls a muscle or gland.