BIOLOGY 1111 EXAM 1 ~ STUDY
GUIDE (CH. 1-3) QUESTIONS AND
ANSWERS
You notice that over the past month, many students on campus have started wearing
a new style of school sweatshirt. You think to yourself that perhaps the bookstore
has recently started selling this new sweatshirt style. This prediction is an example
of? - ANSWER-A hypothesis
A theory is..? - ANSWER-An explanation of an idea that is broad in scope with
multiple lines of evidence.
To be scientifically valid, a hypothesis must be? - ANSWER-testable and falsifiable
The four most common elements in living organisms are - ANSWER-hydrogen,
oxygen, nitrogen, and carbon
Trace elements in human body: - ANSWER-Zinc
Know statements regarding matter: - ANSWER-Matter is anything that occupies
space, and has mass. Matter is found on earth in three physical forms: solid, liquid,
and gas. Water is rare example of matter that exists in all three forms (ice, liquid
water, and water vapor)
Know statements that best describe a compound: - ANSWER-A compound is a
substance consisting of two or more different elements combines in a fixed ratio and
are more common than pure elements. An example of this is table salt (sodium
chloride, NaCl)
In the equation 2 H2+O2 --> 2 H2O, what are the reactants and what are the
products? - ANSWER-The reactant is 2 H2 and O2, the product is 2 H2O
Which of the following trace elements needed by humans is commonly added to
table salt? - ANSWER-Iodine
In some areas, fluoride is added during the municipal water treatment process in
order to help it do what? - ANSWER-Raise levels to a certain concentration that can
reduce tooth decay.
Which of the following particles are found in the nucleus of an atom? - ANSWER-The
protons and neutrons
Electrons move about the nucleus of an atom in the same way that...? - ANSWER-
Insects fly around a bright lamp at night.
, What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- ANSWER-12 (protons + neutrons)
An uncharged atom of Boron has an atomic number of 5 and atomic mass of 11.
How many protons does Boron have? - ANSWER-5 (atomic number = number of
protons)
Which of the following is another term used for atomic mass? - ANSWER-Dalton
The sodium atom contains 11 electrons, 11 protons, 12 neutrons. What is the mass
number of sodium? - ANSWER-23 (protons + neutrons)
Which of the following best describes the atomic number of an atom? - ANSWER-
The number of protons in an atom
Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An
isotope of nitrogen could...? - ANSWER-have more than neutrons
What is Biology? - ANSWER-the scientific study of life
Statements about genetics: - ANSWER-All cells have DNA, the chemical substance
of genes. Genes are the unit of inheritance that transmit information from parents to
offspring. Genes are grouped into very long DNA molecules called chromosomes.
Genes also control the activities of a cell. Genes are coded in sequences that make
up DNA's double helix.
Organisms that are prokaryotes are in the domain's: - ANSWER-Bacteria and
Archaea
Statements about the domain Bacteria: - ANSWER-Bacteria are the most diverse
and widespread prokaryotes and are among the first life-forms on Earth. Live in
Earth's extreme environments (ie. salty lakes, radioactive wastes, and boiling hot
springs)
Members of the kingdom Animalia: - ANSWER-Can obtain their food by eating other
organisms.
Kingdom Fungi include species - ANSWER-that are diverse. Members mostly
decompose the remains of dead organisms and organic wastes and absorb the
nutrients into their cells
Which of the following is a kingdom within the domain Eukarya - ANSWER-Fungi
Organisms that belonging to the Kingdom Plantae - ANSWER-are photosynthetic
and contain cells that are surrounded by cell walls with cellulose.
The teeth of grain-eating animals (such as horses) are usually broad and ridged.
This makes the teeth suitable for grinding and chewing. Meat-eating animals (such
as lions) have pointed teeth that are good for puncturing and ripping flesh. This
GUIDE (CH. 1-3) QUESTIONS AND
ANSWERS
You notice that over the past month, many students on campus have started wearing
a new style of school sweatshirt. You think to yourself that perhaps the bookstore
has recently started selling this new sweatshirt style. This prediction is an example
of? - ANSWER-A hypothesis
A theory is..? - ANSWER-An explanation of an idea that is broad in scope with
multiple lines of evidence.
To be scientifically valid, a hypothesis must be? - ANSWER-testable and falsifiable
The four most common elements in living organisms are - ANSWER-hydrogen,
oxygen, nitrogen, and carbon
Trace elements in human body: - ANSWER-Zinc
Know statements regarding matter: - ANSWER-Matter is anything that occupies
space, and has mass. Matter is found on earth in three physical forms: solid, liquid,
and gas. Water is rare example of matter that exists in all three forms (ice, liquid
water, and water vapor)
Know statements that best describe a compound: - ANSWER-A compound is a
substance consisting of two or more different elements combines in a fixed ratio and
are more common than pure elements. An example of this is table salt (sodium
chloride, NaCl)
In the equation 2 H2+O2 --> 2 H2O, what are the reactants and what are the
products? - ANSWER-The reactant is 2 H2 and O2, the product is 2 H2O
Which of the following trace elements needed by humans is commonly added to
table salt? - ANSWER-Iodine
In some areas, fluoride is added during the municipal water treatment process in
order to help it do what? - ANSWER-Raise levels to a certain concentration that can
reduce tooth decay.
Which of the following particles are found in the nucleus of an atom? - ANSWER-The
protons and neutrons
Electrons move about the nucleus of an atom in the same way that...? - ANSWER-
Insects fly around a bright lamp at night.
, What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- ANSWER-12 (protons + neutrons)
An uncharged atom of Boron has an atomic number of 5 and atomic mass of 11.
How many protons does Boron have? - ANSWER-5 (atomic number = number of
protons)
Which of the following is another term used for atomic mass? - ANSWER-Dalton
The sodium atom contains 11 electrons, 11 protons, 12 neutrons. What is the mass
number of sodium? - ANSWER-23 (protons + neutrons)
Which of the following best describes the atomic number of an atom? - ANSWER-
The number of protons in an atom
Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An
isotope of nitrogen could...? - ANSWER-have more than neutrons
What is Biology? - ANSWER-the scientific study of life
Statements about genetics: - ANSWER-All cells have DNA, the chemical substance
of genes. Genes are the unit of inheritance that transmit information from parents to
offspring. Genes are grouped into very long DNA molecules called chromosomes.
Genes also control the activities of a cell. Genes are coded in sequences that make
up DNA's double helix.
Organisms that are prokaryotes are in the domain's: - ANSWER-Bacteria and
Archaea
Statements about the domain Bacteria: - ANSWER-Bacteria are the most diverse
and widespread prokaryotes and are among the first life-forms on Earth. Live in
Earth's extreme environments (ie. salty lakes, radioactive wastes, and boiling hot
springs)
Members of the kingdom Animalia: - ANSWER-Can obtain their food by eating other
organisms.
Kingdom Fungi include species - ANSWER-that are diverse. Members mostly
decompose the remains of dead organisms and organic wastes and absorb the
nutrients into their cells
Which of the following is a kingdom within the domain Eukarya - ANSWER-Fungi
Organisms that belonging to the Kingdom Plantae - ANSWER-are photosynthetic
and contain cells that are surrounded by cell walls with cellulose.
The teeth of grain-eating animals (such as horses) are usually broad and ridged.
This makes the teeth suitable for grinding and chewing. Meat-eating animals (such
as lions) have pointed teeth that are good for puncturing and ripping flesh. This
