Ascientist investigates two types of cells located in different parts in the human body. cell a contains many more mitochondria than cell b. what is the best conclusion to make from this observation? a. cell a has a stronger cell wall than cell b. cell a is located in a bone, and cell b is located in the heart. c. cell a produces less energy than cell b. d. cell a is part of an organ that does more work than cell b.

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

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.