Biology 121 Exam 1 Study Guide UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Define Biology - CORRECT ANSWER - The study of life.
Life is characterized by what properties? - CORRECT ANSWER - Emergent properties
aka reflect hierarchy of structural organization
What is the lowest level of biological organization - CORRECT ANSWER - Atoms
Know order of structural levels from atom to ecosystem - CORRECT ANSWER - Atoms-
Molecules-Organelles-Cells-Tissue-Organs-Organ Systems-Organisms-Populations-Community-
Ecosystem
Know the basic definition of each (e.g. what is an ecosystem?) - CORRECT ANSWER -
An Ecosystem is where living interacts with the non-living in an environment
What is the function shared by all living organisms? - CORRECT ANSWER - 1. Uptake
and processing of nutrients. 2. Excretion of wastes. 3. Response to environmental stimuli. 4.
Reproduction among others
Know the contribution of Hooke and Leewenhoek - CORRECT ANSWER - Hooke was
the first to observe and name cells. Leewenhoek discovered singled celled organisms
Be able to identify 3 major points of cell theory - CORRECT ANSWER - All living things
consists of cells, all cells come from new cells, new cells produced by division of other cells
, Know basic differences between Prokaryotic and Eukaryotic cells. - CORRECT
ANSWER - Prokaryotic have no internal membranes, organelles, or nucleus, but
eukaryotic does.
Be familiar with DNA molecule and genome - CORRECT ANSWER - DNA molecule is a
double helix and are biological instructions; a genome are the entire library of genetic
information
What are the sources of energy for an ecosystem? - CORRECT ANSWER - Life
Be able to recognize a positive feedback and a negative feedback system - CORRECT
ANSWER - Negative Feedback- slows/stops processes (body temp)
Positive Feedback- speeds up processes (wound healing)
Know definitions of evolution and taxonomy. - CORRECT ANSWER - Evolution is the
key to biological diversity. Taxonomy names and classifies species into hierarchical order
3 Domains -- 4 Kingdoms (3 Multi cellular) - CORRECT ANSWER - 3 Domains-
bacteria, arachae, & eukarya.
4 Kingdoms- animalia, plantae fungi (Multicellular) & Protista
What was the major contribution of Darwin? - CORRECT ANSWER - His origin of
species
What did it help explain? - CORRECT ANSWER - Natural selection and evolution
Know basic information about scientific method -- stages/steps - CORRECT ANSWER -
Form a hypothesis, Test the hypothesis, Analyze data, Form conclusion, Communicate whether
the hypothesis is falsifiable or not
ACTUAL Exam Questions and CORRECT
Answers
Define Biology - CORRECT ANSWER - The study of life.
Life is characterized by what properties? - CORRECT ANSWER - Emergent properties
aka reflect hierarchy of structural organization
What is the lowest level of biological organization - CORRECT ANSWER - Atoms
Know order of structural levels from atom to ecosystem - CORRECT ANSWER - Atoms-
Molecules-Organelles-Cells-Tissue-Organs-Organ Systems-Organisms-Populations-Community-
Ecosystem
Know the basic definition of each (e.g. what is an ecosystem?) - CORRECT ANSWER -
An Ecosystem is where living interacts with the non-living in an environment
What is the function shared by all living organisms? - CORRECT ANSWER - 1. Uptake
and processing of nutrients. 2. Excretion of wastes. 3. Response to environmental stimuli. 4.
Reproduction among others
Know the contribution of Hooke and Leewenhoek - CORRECT ANSWER - Hooke was
the first to observe and name cells. Leewenhoek discovered singled celled organisms
Be able to identify 3 major points of cell theory - CORRECT ANSWER - All living things
consists of cells, all cells come from new cells, new cells produced by division of other cells
, Know basic differences between Prokaryotic and Eukaryotic cells. - CORRECT
ANSWER - Prokaryotic have no internal membranes, organelles, or nucleus, but
eukaryotic does.
Be familiar with DNA molecule and genome - CORRECT ANSWER - DNA molecule is a
double helix and are biological instructions; a genome are the entire library of genetic
information
What are the sources of energy for an ecosystem? - CORRECT ANSWER - Life
Be able to recognize a positive feedback and a negative feedback system - CORRECT
ANSWER - Negative Feedback- slows/stops processes (body temp)
Positive Feedback- speeds up processes (wound healing)
Know definitions of evolution and taxonomy. - CORRECT ANSWER - Evolution is the
key to biological diversity. Taxonomy names and classifies species into hierarchical order
3 Domains -- 4 Kingdoms (3 Multi cellular) - CORRECT ANSWER - 3 Domains-
bacteria, arachae, & eukarya.
4 Kingdoms- animalia, plantae fungi (Multicellular) & Protista
What was the major contribution of Darwin? - CORRECT ANSWER - His origin of
species
What did it help explain? - CORRECT ANSWER - Natural selection and evolution
Know basic information about scientific method -- stages/steps - CORRECT ANSWER -
Form a hypothesis, Test the hypothesis, Analyze data, Form conclusion, Communicate whether
the hypothesis is falsifiable or not
