Question 5 of 10 Sodium metal reacts with hydrochloric acid to produce salt and hydrogen
gas. What are the reactants in this chemical reaction?
A. Salt and hydrogen gas
B. Hydrogen gas and sodium metal
C. Sodium metal and hydrochloric acid
O D. Sodium metal and salt

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b. a light particle

The solution inside a plant cell is approximately a 1% saline solution and a 21% nacl solution the ,cytoplasm of a plant cell will