A&P 102 FINAL EXAM IVY TECH LATEST VERSION
2023-2024 ACTUAL EXAM 130 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+
2. List in order the major structural levels of organization of found in the human body. - ANSWER-a.
Chemical, Cell, Tissue, Organ, Organ System, Organism
3. Explain the difference between anatomy and physiology - ANSWER-a. Anatomy is the study of the
shape, Physiology is the study of function
7. Define homeostasis and homeostatic regulation. Give an example. Define receptor (sensor), control
center and effector, and explain what role each of these play in homeostatic regulation. Give examples
of these. Explain how feedback relates to homeostatic regulation. Describe examples of positive and
negative feedback loops. - ANSWER-a. Homeostasis- stable internal environment
b. Stimulus is picked up by receptor, control center determines what to do, if abnormal the effector
makes it better
c. Negative feedback loop- reverts problem then shuts off
d. Positive feedback loop- regulates problem, but continuously gets worse ( labor contractions)
Define chemistry - ANSWER-the study of matter and the changes it undergoes
Define Matter - ANSWER-Anything that has mass and takes up space
Define atom - ANSWER-smallest unit of matter
define element - ANSWER-a substance that cannot be broken down into smaller parts
2. Name three subatomic particles as well as the charges (if any) and locations of each. - ANSWER-a.
Protons (p+) - in central core of atom (atomic nucleus); positively charged
b. Neutrons (n0) - in atomic nucleus; slightly larger than protons; no charge
6. What is a molecule? - ANSWER-a. Molecule - formed by chemical bonding between
two or more atoms of same element
define ionic bond - ANSWER-- electrons are transferred from metal atom to nonmetal atom; results in
formation of ions: cations and anions
define covalent bond - ANSWER-strongest bond; two or more nonmetals share electrons
8. Describe a compound. - ANSWER-a. Compound - formed when two or more atoms from different
elements combine by chemical bonding
what is an ion - ANSWER-an atom or molecule with a net electric charge due to the loss or gain of one or
more electrons.
what is an anion - ANSWER-A negatively charged ion
what is a cation - ANSWER-A positively charged ion
14. What is an enzyme? How do enzymes affect chemical reactions? - ANSWER-a. Enzymes - biological
catalysts; most are proteins with following properties:
b. Speed up reactions by lowering activation energy
c. Highly specific for individual substrates (substance that can bind to enzyme's active site) d. Do
not alter reactants or products
e. Not permanently altered in reactions catalyzed
15. Give examples of inorganic compounds. - ANSWER-a. Inorganic compounds generally do not
contain carbon bonded to hydrogen; water, acids, bases, and salts
, 16. What is the difference between and acid and a base? - ANSWER-a. Acid - hydrogen ion or proton
donor; number of hydrogen ions increases in water when acid is added
b. Base (alkali) - hydrogen ion acceptor; number of hydrogen ions decreases in water when base is
added
What does it mean if a solution is neutral? - ANSWER-no charge
What does the pH scale measure? What do the numbers correspond with? - ANSWER-c. pH = 7; solution
is neutral; number of hydrogen ions and base ions are equal
d. pH less than 7 is acidic; hydrogen ions outnumber base ions
e. pH greater than 7 is basic or alkaline; base ions outnumber hydrogen ions
What are buffers? - ANSWER-f. Buffer - chemical system that resists changes in pH; prevents large
swings in pH when acid or base is added to solution
a. any metal cation and nonmetal anion held together by ionic bonds
b. Can dissolve in water to form cations and anions called electrolytes; capable of conducting electrical
current - ANSWER-electolytes and salts
18. What are the differences between organic and inorganic compounds? Give examples of each. -
ANSWER-a. Each type of organic compound in body (carbohydrate, lipid, protein, or nucleic acid)
consists of polymers built from monomer subunits
b. Inorganic compounds generally do not contain carbon bonded to hydrogen; water, acids, bases, and
salts
what is a carbohydrate - ANSWER-compound made up of carbon, hydrogen, and oxygen atoms; major
source of energy for the human body
what are the roles of carbs in the body - ANSWER-- Using glucose for energy
- Sparing body protein
- Preventing ketosis
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller perminuskarimikithinji. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
