About what percentage of the cell cycle is shown for dna replication

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

What types of energy transfers and energy transportations are involved in the domino chain reaction?

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.