Is the following statement true or false? luminol detects human blood at crime scenes. it changes color if an iron-containing protein in red blood cells is present. luminol is a chemical indicator.

A. True

B. False

What is something that is condensed visible form of chromatin

What is NOT true about prokaryotes a. They have a nucleus. b. They are more simple than eukaryotes c. They were the first kinds of life on Earth. d. They are the most abundant organisms on Earth.

Which of the following statements about the chemiosmotic synthesis of ATP is correct? a. The energy for production of ATP from ADP comes directly from a gradient of electrons across the inner mitochondrial membrane. b.

Name the two body systems responsible for regulation in humans

Which mineral weathers faster hornblende and quartz?

When they match is burn chemical and potential l energy is converted to thermal and

What is the molten iron and nickel in the core of the earth thought to contribute to

If the seawater carbonate ion concentration is 270_mol/kg, what is the approximate rate of calcification, and approximately how many days would i take 1 square meter of reef to accumulate 30mmol of calcium carbonate (CaCO3) ?

What is the importance of decomposers in an ecosysyem such as mold?

Which statement about ddt best shows how science has been impacted by society? ddt led to insect resistance. ddt was considered harmful and was replaced by other pesticides. ddt was the first modern insecticide.