Author Question: What is the metal ion in the porphyrin of heme? A) iron B) calcium C) molybdenum D) magnesium ... (Read 227 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
What is the metal ion in the porphyrin of heme?
 
  A) iron
  B) calcium
  C) molybdenum
  D) magnesium
  E) chlorophyll

Question 2

The modern periodic law states that the properties of the elements repeat when the periodic table is arranged according to which of the following?
 
  A) increasing atomic number
  B) increasing mass number
  C) increasing atomic mass
  D) increasing isotopic mass
  E) none of the above



cloudre37

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

For a complete list of videos, visit our video library