JCJC Principles of Biology Lecture
Exam 1 Study Guide Questions and
Answers
What is taxonomy? - ANSWER-The branch of biology that identifies, names, and
classifies living things.
The dynamics of an ecosystem depend upon what two processes? - ANSWER-The
cycling of chemicals (nutrients) and the flow of energy
What is the molecule that is the genetic material for all known organisms? -
ANSWER-DNA
What levels of biological organization - ANSWER-a. Tissue
b. Organism
c. Community
d. Ecosystem
e. Population
What type of energy is always released from any energy conversion process? -
ANSWER-Heat
How many species of organisms have been identified? - ANSWER-About 2 million
What is the scientific name? - ANSWER-A two-part name consisting of the Genus
and the Species levels of classification
List the 3 subatomic materials - ANSWER-a) Proton
b) Neutron
c) Electron
Which subatomic particle determines the chemical properties of an atom? -
ANSWER-Electron
Which subatomic particle has a negative charge? Which has a positive charge? -
ANSWER-Electron; Proton
What does the term "matter" refer to? - ANSWER-Anything that occupies space and
has mass
How many chemical elements are naturally occurring? - ANSWER-92
Which 4 elements make up about 96% of the mass of the human body? Which one
of the 4 makes most of the mass? - ANSWER-Hydrogen, Carbon, Oxygen, and
Nitrogen; Oxygen
Exam 1 Study Guide Questions and
Answers
What is taxonomy? - ANSWER-The branch of biology that identifies, names, and
classifies living things.
The dynamics of an ecosystem depend upon what two processes? - ANSWER-The
cycling of chemicals (nutrients) and the flow of energy
What is the molecule that is the genetic material for all known organisms? -
ANSWER-DNA
What levels of biological organization - ANSWER-a. Tissue
b. Organism
c. Community
d. Ecosystem
e. Population
What type of energy is always released from any energy conversion process? -
ANSWER-Heat
How many species of organisms have been identified? - ANSWER-About 2 million
What is the scientific name? - ANSWER-A two-part name consisting of the Genus
and the Species levels of classification
List the 3 subatomic materials - ANSWER-a) Proton
b) Neutron
c) Electron
Which subatomic particle determines the chemical properties of an atom? -
ANSWER-Electron
Which subatomic particle has a negative charge? Which has a positive charge? -
ANSWER-Electron; Proton
What does the term "matter" refer to? - ANSWER-Anything that occupies space and
has mass
How many chemical elements are naturally occurring? - ANSWER-92
Which 4 elements make up about 96% of the mass of the human body? Which one
of the 4 makes most of the mass? - ANSWER-Hydrogen, Carbon, Oxygen, and
Nitrogen; Oxygen
