BIOL 1000 EXAM #1 And Lab Exam #2
PRACTICE TEST Questions All Solved.
Which of the following is the smallest particle of an element that displays the properties of the
element? - Answer atom
Which of the following is the smallest unit of life? - Answer cell
Homeostasis means that the internal environment of an organism does NOT stay constant. (True
or False) - Answer False
What is the collection of unified insights about nature, the evidence for which is an array of
facts? - Answer science
What is the process by which individuals make a hypothesis, gather data by observation and
experimentation, and come to a conclusion - Answer 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? - Answer control group
A(n) _______________ is a concept, or a collection of concepts, widely supported by a broad
range of observations, experiments, and data. - Answer 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? - Answer 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? - Answer studying with
or without the TV on
(T or F) Peer-reviewed journals are more reliable than info in newspapers - Answer True
Can an element be broken down into simpler substances? - Answer no
Why are radioisotopes radioactive? - Answer 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? - Answer 53
, in an ionic bond, an atom has a positive charge when it has_________________ - Answer lost
elctrons
Potassium (K) has an atomic number of 19. How many electrons does potassium need to have a
positive charge? - Answer 18
A charged sulfur(S) atom has 16 protons and 17 electrons. What is the charge of the atom? -
Answer negative
______________&_________________ are in the nucleus of an atom and ____________ move
around outside the nucleus - Answer protons and neutrons; electrons
The atomic number refers to the number of ____________ in an atom's nucleus - Answer
protons
Consider 35/17 Cl. The atomic number is ___ and the mass number is ___. - Answer 35,17
Isotopes are atoms of the same element that differ in the number of _________. - Answer
neutrons
Electrons are transferred from one atom to another in _______________. - Answer ionic
bonding
Describe the type of bonding in the compound KBr. - Answer ionic
Describe the type of bonding in the compound NH3 - Answer polar covalent
describe the type of bonding in the compound CH4 - Answer non-polar covalent
Describe the type of bonding in the compound H20 - Answer polar covalent
These types of bonds are formed when partially positive hydrogen in a polar covalent bond is
attracted to a partially negative atom in a polar covalent bond in another molecule - Answer
hydrogen bonds
Ice takes up ___ space than water - Answer more
PRACTICE TEST Questions All Solved.
Which of the following is the smallest particle of an element that displays the properties of the
element? - Answer atom
Which of the following is the smallest unit of life? - Answer cell
Homeostasis means that the internal environment of an organism does NOT stay constant. (True
or False) - Answer False
What is the collection of unified insights about nature, the evidence for which is an array of
facts? - Answer science
What is the process by which individuals make a hypothesis, gather data by observation and
experimentation, and come to a conclusion - Answer 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? - Answer control group
A(n) _______________ is a concept, or a collection of concepts, widely supported by a broad
range of observations, experiments, and data. - Answer 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? - Answer 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? - Answer studying with
or without the TV on
(T or F) Peer-reviewed journals are more reliable than info in newspapers - Answer True
Can an element be broken down into simpler substances? - Answer no
Why are radioisotopes radioactive? - Answer 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? - Answer 53
, in an ionic bond, an atom has a positive charge when it has_________________ - Answer lost
elctrons
Potassium (K) has an atomic number of 19. How many electrons does potassium need to have a
positive charge? - Answer 18
A charged sulfur(S) atom has 16 protons and 17 electrons. What is the charge of the atom? -
Answer negative
______________&_________________ are in the nucleus of an atom and ____________ move
around outside the nucleus - Answer protons and neutrons; electrons
The atomic number refers to the number of ____________ in an atom's nucleus - Answer
protons
Consider 35/17 Cl. The atomic number is ___ and the mass number is ___. - Answer 35,17
Isotopes are atoms of the same element that differ in the number of _________. - Answer
neutrons
Electrons are transferred from one atom to another in _______________. - Answer ionic
bonding
Describe the type of bonding in the compound KBr. - Answer ionic
Describe the type of bonding in the compound NH3 - Answer polar covalent
describe the type of bonding in the compound CH4 - Answer non-polar covalent
Describe the type of bonding in the compound H20 - Answer polar covalent
These types of bonds are formed when partially positive hydrogen in a polar covalent bond is
attracted to a partially negative atom in a polar covalent bond in another molecule - Answer
hydrogen bonds
Ice takes up ___ space than water - Answer more
