BIOL 1000 EXAM #1 PRACTICE TEST Questions
and Correct Answers
Which of the following is the smallest particle of an element that displays the properties
of the element?
atom
Which of the following is the smallest unit of life?
cell
Homeostasis means that the internal environment of an organism does NOT stay
constant. (True or False)
False
What is the collection of unified insights about nature, the evidence for which is an
array of facts?
science
What is the process by which individuals make a hypothesis, gather data by observation
and experimentation, and come to a conclusion
scientific method
What is the name of a sample that goes through all the steps of an experiment but does
not contain the variable being tested?
control group
, A(n) _______________ is a concept, or a collection of concepts, widely supported by a
broad range of observations, experiments, and data.
theory
An experiment was done to see whether eating breakfast in the morning increases
students' ability to focus in class. What is the dependent variable?
ability to focus
A reading comprehension test was given to students who studied the textbook with and
without the TV turned on. What would be the independent variable?
studying with or without the TV on
(T or F) Peer-reviewed journals are more reliable than info in newspapers
True
Can an element be broken down into simpler substances?
no
Why are radioisotopes radioactive?
The have unstable nuclei and they have too few or too many neutrons in the nucleus
A neutral atom of Iodine (I) has 53 electrons. How many protons does it have?
53
in an ionic bond, an atom has a positive charge when it has_________________
lost elctrons
Potassium (K) has an atomic number of 19. How many electrons does potassium need to
have a positive charge?
and Correct Answers
Which of the following is the smallest particle of an element that displays the properties
of the element?
atom
Which of the following is the smallest unit of life?
cell
Homeostasis means that the internal environment of an organism does NOT stay
constant. (True or False)
False
What is the collection of unified insights about nature, the evidence for which is an
array of facts?
science
What is the process by which individuals make a hypothesis, gather data by observation
and experimentation, and come to a conclusion
scientific method
What is the name of a sample that goes through all the steps of an experiment but does
not contain the variable being tested?
control group
, A(n) _______________ is a concept, or a collection of concepts, widely supported by a
broad range of observations, experiments, and data.
theory
An experiment was done to see whether eating breakfast in the morning increases
students' ability to focus in class. What is the dependent variable?
ability to focus
A reading comprehension test was given to students who studied the textbook with and
without the TV turned on. What would be the independent variable?
studying with or without the TV on
(T or F) Peer-reviewed journals are more reliable than info in newspapers
True
Can an element be broken down into simpler substances?
no
Why are radioisotopes radioactive?
The have unstable nuclei and they have too few or too many neutrons in the nucleus
A neutral atom of Iodine (I) has 53 electrons. How many protons does it have?
53
in an ionic bond, an atom has a positive charge when it has_________________
lost elctrons
Potassium (K) has an atomic number of 19. How many electrons does potassium need to
have a positive charge?
