APHY 201 Ch 1, 2: Homeostasis, Chemistry Ivy Tech Questions with Correct Answers

APHY 201 Ch 1, 2: Homeostasis, Chemistry Ivy Tech Questions with Correct
Answers


Question 1:
explain why chemistry is an important part of the study of physiology
Answer:
....all the cells in your organs are
composed of chemicals and chemical reactions are involved in all of your body's movements
and cycles


Question 2:
matter
Answer:
....Anything that occupies space and has mass; the physical material of the universe


Question 3:
element
Answer:
....a pure substance that cannot be created or broken down by ordinary chemical means


Question 4:
most abundant elements in humans
Answer:
....oxygen (O), carbon (C), hydrogen (H), nitrogen (N)


Question 5:
compound
Answer:
....substance composed of two or more elements joined by chemical bonds


Question 6:
proton
Answer:
....A subatomic particle that has a positive charge and that is found in the nucleus of an atom

, Question 7:
neutron
Answer:
....A subatomic particle that has no charge and that is found in the nucleus of an atom


Question 8:
electron
Answer:
....A subatomic particle that has a negative charge and found outside the nucleus


Question 9:
nucleus
Answer:
....center of an atom, contains protons and neutrons


Question 10:
atomic number
Answer:
....the number of protons in the nucleus of an atom, which determines the chemical properties
of an element and its place in the periodic table


Question 11:
valence electrons
Answer:
....The electrons in the outermost shell (main energy level) of an atom; these are the electrons
involved in forming bonds.


Question 12:
bond
Answer:
....a weak or strong electrical attraction that holds atoms in the same vicinity


Question 13:
molecule
Answer:
....atoms bonded together