LSUA BIOL 1001 Exam 1 Purifoy QUESTIONS WITH ANSWERS
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What is science? - a way of knowing, an approach to understanding the natural world
What is data? - recorded observations
What is a hypothesis? - a proposed scientific explanation for a set of observations
What is an experiment? - scientific test carried out under controlled conditions
What is a theory? - an explanation using an integrated set of principles that organizes
observations and predicts behaviors or events
What is an independent variable? - factor in an experiment that a scientist purposely changes
What is the dependent variable? - The measure used to judge the outcome
What is a controlled experiment? - a test of the effect of a single variable by changing it while
keeping all other variables the same
What is the process of science usually? - repetitive and non linear
What is evolution? - the process of change that has transformed life on Earth from its earliest
beginnings to the diversity of organisms living today
What is Darwin's theory of evolution? - all species of organisms arise and develop through the
natural selection of small, inherited variations that increase the individual's ability to compete,
survive, and reproduce.
What is descent with modification? - the principle that living species descend with changes, from
other species over time
What is natural selection? - the process whereby organisms better adapted to their environment
tend to survive and produce more offspring
What are Darwins observations and inferences? - O1: Individual Variation
O2: Overproduction of offspring
I1: Unequal reproductive success
I2: Accumulation of favorable traits over time
What is artificial selection? - selective breeding of plants and animals to promote the occurrence
of desirable traits in offspring
What does DNA determine? - an organisms structures and functions
, What are the four bases of DNA? - Adenine, Thymine, Cytosine, Guanine
What do genes provide? - blueprints for the production of all body proteins
Why are proteins important? - They are the major players in building and maintaining the cell
and carrying out its activities.
True or False? Life depends on the transfer of energy and transformation of energy and matter -
True
Where does most of our energy come from? - The sun
True or False? Life depends on interactions within and between systems. - True
What is systems biology? - the exploration of a biological system by analyzing the interactions
among its parts
All the organisms on your campus make up
A) an ecosystem.
B) a community.
C) a population.
D) an experimental group.
E) a taxonomic domain. - a community
Which of these is not a property of all living organisms?
a. capable of reproduction
b. uses energy
c. composed of multiple cells
d. responds to the environment - composed of multiple cells
Which of the following statements best distinguishes hypothesis from theories in science? -
Hypothesis are usually narrow in scope theories have broad explanitory power
Which of the following best demonstrates the unity among all living organisms? - DNA and a
common genetic code
A controlled experiment is one that... - tests experimental and control groups in parallel
Which of the following is a true statement of observational data? - it can include comparisons of
fossils as well as DNA sequences
A biologist studying interactions among the bacteria in an ecosystem could not be working at
which level in life's hierarchy? - the organ level
RATED A+
What is science? - a way of knowing, an approach to understanding the natural world
What is data? - recorded observations
What is a hypothesis? - a proposed scientific explanation for a set of observations
What is an experiment? - scientific test carried out under controlled conditions
What is a theory? - an explanation using an integrated set of principles that organizes
observations and predicts behaviors or events
What is an independent variable? - factor in an experiment that a scientist purposely changes
What is the dependent variable? - The measure used to judge the outcome
What is a controlled experiment? - a test of the effect of a single variable by changing it while
keeping all other variables the same
What is the process of science usually? - repetitive and non linear
What is evolution? - the process of change that has transformed life on Earth from its earliest
beginnings to the diversity of organisms living today
What is Darwin's theory of evolution? - all species of organisms arise and develop through the
natural selection of small, inherited variations that increase the individual's ability to compete,
survive, and reproduce.
What is descent with modification? - the principle that living species descend with changes, from
other species over time
What is natural selection? - the process whereby organisms better adapted to their environment
tend to survive and produce more offspring
What are Darwins observations and inferences? - O1: Individual Variation
O2: Overproduction of offspring
I1: Unequal reproductive success
I2: Accumulation of favorable traits over time
What is artificial selection? - selective breeding of plants and animals to promote the occurrence
of desirable traits in offspring
What does DNA determine? - an organisms structures and functions
, What are the four bases of DNA? - Adenine, Thymine, Cytosine, Guanine
What do genes provide? - blueprints for the production of all body proteins
Why are proteins important? - They are the major players in building and maintaining the cell
and carrying out its activities.
True or False? Life depends on the transfer of energy and transformation of energy and matter -
True
Where does most of our energy come from? - The sun
True or False? Life depends on interactions within and between systems. - True
What is systems biology? - the exploration of a biological system by analyzing the interactions
among its parts
All the organisms on your campus make up
A) an ecosystem.
B) a community.
C) a population.
D) an experimental group.
E) a taxonomic domain. - a community
Which of these is not a property of all living organisms?
a. capable of reproduction
b. uses energy
c. composed of multiple cells
d. responds to the environment - composed of multiple cells
Which of the following statements best distinguishes hypothesis from theories in science? -
Hypothesis are usually narrow in scope theories have broad explanitory power
Which of the following best demonstrates the unity among all living organisms? - DNA and a
common genetic code
A controlled experiment is one that... - tests experimental and control groups in parallel
Which of the following is a true statement of observational data? - it can include comparisons of
fossils as well as DNA sequences
A biologist studying interactions among the bacteria in an ecosystem could not be working at
which level in life's hierarchy? - the organ level
