IVY TECH APHY 101 FINAL STUDY GUIDE
PRACTICE QUESTIONS AND COMPLETE
SOLUTIONS GRADED A+
⩥ What are the levels of organization and define each
Answer: organelle: cell structure that carries out special function in the
cell
cell: basic unit of structure & function in a living thing
tissue: a group of similar cells that are organized to do a specific job
organ: a collection of tissues that carry out a specialized function of the
body
organ system: group of organs that work together to perform a specific
function
organism: a living thing made of a group of organ systems
⩥ What are the characteristics of life and define each
Answer: Responsiveness to the environment, growth and change, ability
to reproduce, have a metabolism and breathe, maintain homeostasis,
being made of cells, passing traits to offspring
⩥ what are the requirements of life? why is each important?
Answer: water: needed to transport substances to regulate the body
food: needed to supply energy and for regulation
,oxygen: needed to help release energy from food substances
heat: needed to regulate the rate of metabolic processes
pressure: needed for breathing and circulation
⩥ Define homeostasis
Answer: Maintaining a stable internal environment
⩥ what is a homeostatic mechanism
Answer: tendency to maintain relatively constant conditions in the
environment
⩥ Define matter, element and atom. What is the basic unit of matter?
Answer: matter: any substance that has mass and takes up space
atom: smallest unit of ordinary matter
basic unit of matter: atoms
⩥ what is the structure of an atom
Answer: protons, neutrons, electrons
⩥ define nucleus, proton, neutron, and electron. What charges do each of
these particles have?
Answer: nucleus: central core of an atom, positive
, proton: stable subatomic particle, positive
neutron: subatomic particle, no charge
electron: stable subatomic particle, negative
⩥ what are covalent, ionic and hydrogen bonds and what are the
differences between the three?
Answer: covalent: 2 atoms shared 1 or more molecules
hydrogen: weak bond between 2 opposite positively charged sides of 2
or more molecules
ionic bond: atom gives away one or more electrons to another atom
⩥ Define synthesis
Answer: the production of chemical compounds by reaction from
simpler materials.
⩥ Define decomposition
Answer: the process of breaking down deliverables and project work
into smaller more manageable components.
⩥ Define exchange reaction
Answer: parts of molecules trade places
⩥ What is a reactant?
PRACTICE QUESTIONS AND COMPLETE
SOLUTIONS GRADED A+
⩥ What are the levels of organization and define each
Answer: organelle: cell structure that carries out special function in the
cell
cell: basic unit of structure & function in a living thing
tissue: a group of similar cells that are organized to do a specific job
organ: a collection of tissues that carry out a specialized function of the
body
organ system: group of organs that work together to perform a specific
function
organism: a living thing made of a group of organ systems
⩥ What are the characteristics of life and define each
Answer: Responsiveness to the environment, growth and change, ability
to reproduce, have a metabolism and breathe, maintain homeostasis,
being made of cells, passing traits to offspring
⩥ what are the requirements of life? why is each important?
Answer: water: needed to transport substances to regulate the body
food: needed to supply energy and for regulation
,oxygen: needed to help release energy from food substances
heat: needed to regulate the rate of metabolic processes
pressure: needed for breathing and circulation
⩥ Define homeostasis
Answer: Maintaining a stable internal environment
⩥ what is a homeostatic mechanism
Answer: tendency to maintain relatively constant conditions in the
environment
⩥ Define matter, element and atom. What is the basic unit of matter?
Answer: matter: any substance that has mass and takes up space
atom: smallest unit of ordinary matter
basic unit of matter: atoms
⩥ what is the structure of an atom
Answer: protons, neutrons, electrons
⩥ define nucleus, proton, neutron, and electron. What charges do each of
these particles have?
Answer: nucleus: central core of an atom, positive
, proton: stable subatomic particle, positive
neutron: subatomic particle, no charge
electron: stable subatomic particle, negative
⩥ what are covalent, ionic and hydrogen bonds and what are the
differences between the three?
Answer: covalent: 2 atoms shared 1 or more molecules
hydrogen: weak bond between 2 opposite positively charged sides of 2
or more molecules
ionic bond: atom gives away one or more electrons to another atom
⩥ Define synthesis
Answer: the production of chemical compounds by reaction from
simpler materials.
⩥ Define decomposition
Answer: the process of breaking down deliverables and project work
into smaller more manageable components.
⩥ Define exchange reaction
Answer: parts of molecules trade places
⩥ What is a reactant?
