All of the following statements about a chloroplast and a mitochondrion are true except: (a) both use proton gradients for energy production. (b) both capture light energy. (c) both contain dna. (d) both are bounded by two unit membranes. (e) both synthesize atp.

What is true of sea slugs in these orders

How does food concentration affect yeast activity

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.