This topic contains a solution. Click here to go to the answer

Author Question: How many pyrrole rings are there in a porphyrin structure? A. 5 B. 4 C. 2 D ... (Read 90 times)

Shelles

  • Hero Member
  • *****
  • Posts: 582
How many pyrrole rings are there in a porphyrin structure?
 
  A. 5
  B. 4
  C. 2
  D 1

Question 2

The globin portion of hemoglobin in normal adult humans is composed of which two amino acid chains?
 
  A. Two alphas, two betas (2, 2)
  B. Three betas, three deltas (3, 3)
  C. Two deltas, two betas (2, 2)
  D. Two sigmas, two gammas (2, 2)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nyrave

  • Sr. Member
  • ****
  • Posts: 344
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 55% of students answer this correctly




Shelles

  • Member
  • Posts: 582
Reply 2 on: Jun 25, 2018
Gracias!


komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

For a complete list of videos, visit our video library