Answer the following question given this paragraph: In this lesson, you learned about chemical bonds in a water molecule. The bonds form between atoms of hydrogen and oxygen when they share electrons. This type of bond is an example of a covalent bond. Q: How do you calculate the atomic mass of an element? Choices: - add neutrons and electrons - count the electrons - multiply protons by neutrons - add the protons and neutrons together A:
add the protons and neutrons together
(Question)
Answer the following question given this paragraph: Red blood cells are shaped like flattened disks. There are trillions of red blood cells in your blood. Each red blood cell has millions of molecules of hemoglobin. Hemoglobin is a protein that contains iron. The iron in hemoglobin gives red blood cells their red color. It also explains how hemoglobin carries oxygen. The iron in hemoglobin binds with oxygen molecules so they can be carried by red blood cells. Q: What in hemoglobin gives red blood cells their red color? Choices: - calcium - lead - barium - iron A:
(Answer)
iron
Ques: Answer the following question given this paragraph: Coal is our largest source of energy for producing electricity. Q: What is our largest source of energy? Choices: - wind - methane - iron - coal A:
Ans: coal
(Q).
Answer the following question given this paragraph: The main chemical components of living organisms are known as organic compounds . Organic compounds are molecules built around the element carbon (C). Living things are made up of very large molecules. These large molecules are called macromolecules because "macro" means large; they are made by smaller molecules bonding together. Our body gets these smaller molecules, the "building blocks" or monomers , of organic molecules from the food we eat. Which organic molecules do you recognize from the list below?. Q: Organic compounds are molecules built around what element? Choices: - helium - phosphorus - oxygen - carbon A:
(A).
carbon
Ques:Answer the following question given this paragraph: Q: Receptor clustering happens when what binds to the receptors? Choices: - enzymes - lipid molecules - carbohydrates - fas molecules A:

Ans:fas molecules
Ques:Answer the following question given this paragraph: Adolescence includes the physical changes of puberty among other changes. Q: Puberty and other physical changes occurs during which stage of development? Choices: - childhood - infancy - adulthood - adolescence A:

Ans:
adolescence