Biology 1408: Final Exam
Which one of the following is true about scientific knowledge? - Answer-Scientific knowledge is not
absolute, because the possibility is always held open that new experiments may one day prove it wrong.
A good hypothesis must: - Answer-be falsifiable.
Choose the answer that best describes the sequence of the scientific method. - Answer-observation,
hypothesis, experiment, conclusion
The role of a control in an experiment is to: - Answer-provide a basis of comparison to an experimental
group.
Which of the following is a theory? - Answer-There is molecular and biochemical evidence that all
organisms are related.
Which of the following is at the root cause for all cancers? - Answer-a breakdown of the cell division
process
Two hydrogen atoms (atomic number 1) form a covalent bond. Which of the following is true? - Answer-
Both hydrogen atoms now have two electrons in their outer shell.
An atom will react with other atoms only until: - Answer-it has completely filled its outermost energy
level.
,The high specific heat and surface tension of water are a result of: - Answer-hydrogen bonding between
water molecules.
A measure of the quantity of matter in an object is known as: - Answer-mass.
The naturally occurring helium atom is chemically inert because: - Answer-its outermost shell is filled
with electrons.
For an atom to be considered an ion: - Answer-protons can outnumber electrons.
All of the following are functions of proteins except: - Answer-storing genetic information.
The two chains of nucleotides in a DNA molecule are held together by: - Answer-hydrogen bonds.
What do polysaccharides, such as cellulose; nucleic acids, such as DNA; and proteins, such as keratin,
have in common? - Answer-They are all built of chemically linked monomers.
Sugar is an organic molecule because it contains: - Answer-carbon.
An example of an important biological molecule that may contain the -NH2 group is: - Answer-an
enzyme.
Glycogen is a polysaccharide used for energy storage by: - Answer-animals.
Cell walls can be found as part of: - Answer-plant cells, bacteria, fungi, and protists.
, Which of the following is the correct order of events in a cell? - Answer-DNA makes RNA; RNA makes
protein.
Many antibiotics work by blocking the function of ribosomes. Therefore, these antibiotics will: - Answer-
block protein synthesis.
Cells can increase the number or size of some organelles in response to new demands. The amount of
one organelle often is increased dramatically in the livers of alcoholics. Based on what you know of
organelle function, this organelle is the: - Answer-smooth endoplasmic reticulum.
The cytoskeleton is composed of: - Answer-microfilaments, intermediate filaments, and microtubules.
The large central vacuole of plants: - Answer-may make up as much as 90 percent of the internal volume
of the cell.
Which of the following is true of the plasma membrane? - Answer-It controls the passage of substances
into and out of the cell.
Short chains of sugars attached to proteins or phospholipids in the cell membrane make up the: -
Answer-glycocalyx.
The huge array of capabilities of the plasma membrane are performed by its: - Answer-proteins.
Membrane proteins perform all of the following functions except: - Answer-maintainance of membrane
fluidity.
The outer living limit of the cell is called the: - Answer-plasma membrane.
A purpose of the plasma membrane is to: - Answer-form the outer boundary of a cell.
Which one of the following is true about scientific knowledge? - Answer-Scientific knowledge is not
absolute, because the possibility is always held open that new experiments may one day prove it wrong.
A good hypothesis must: - Answer-be falsifiable.
Choose the answer that best describes the sequence of the scientific method. - Answer-observation,
hypothesis, experiment, conclusion
The role of a control in an experiment is to: - Answer-provide a basis of comparison to an experimental
group.
Which of the following is a theory? - Answer-There is molecular and biochemical evidence that all
organisms are related.
Which of the following is at the root cause for all cancers? - Answer-a breakdown of the cell division
process
Two hydrogen atoms (atomic number 1) form a covalent bond. Which of the following is true? - Answer-
Both hydrogen atoms now have two electrons in their outer shell.
An atom will react with other atoms only until: - Answer-it has completely filled its outermost energy
level.
,The high specific heat and surface tension of water are a result of: - Answer-hydrogen bonding between
water molecules.
A measure of the quantity of matter in an object is known as: - Answer-mass.
The naturally occurring helium atom is chemically inert because: - Answer-its outermost shell is filled
with electrons.
For an atom to be considered an ion: - Answer-protons can outnumber electrons.
All of the following are functions of proteins except: - Answer-storing genetic information.
The two chains of nucleotides in a DNA molecule are held together by: - Answer-hydrogen bonds.
What do polysaccharides, such as cellulose; nucleic acids, such as DNA; and proteins, such as keratin,
have in common? - Answer-They are all built of chemically linked monomers.
Sugar is an organic molecule because it contains: - Answer-carbon.
An example of an important biological molecule that may contain the -NH2 group is: - Answer-an
enzyme.
Glycogen is a polysaccharide used for energy storage by: - Answer-animals.
Cell walls can be found as part of: - Answer-plant cells, bacteria, fungi, and protists.
, Which of the following is the correct order of events in a cell? - Answer-DNA makes RNA; RNA makes
protein.
Many antibiotics work by blocking the function of ribosomes. Therefore, these antibiotics will: - Answer-
block protein synthesis.
Cells can increase the number or size of some organelles in response to new demands. The amount of
one organelle often is increased dramatically in the livers of alcoholics. Based on what you know of
organelle function, this organelle is the: - Answer-smooth endoplasmic reticulum.
The cytoskeleton is composed of: - Answer-microfilaments, intermediate filaments, and microtubules.
The large central vacuole of plants: - Answer-may make up as much as 90 percent of the internal volume
of the cell.
Which of the following is true of the plasma membrane? - Answer-It controls the passage of substances
into and out of the cell.
Short chains of sugars attached to proteins or phospholipids in the cell membrane make up the: -
Answer-glycocalyx.
The huge array of capabilities of the plasma membrane are performed by its: - Answer-proteins.
Membrane proteins perform all of the following functions except: - Answer-maintainance of membrane
fluidity.
The outer living limit of the cell is called the: - Answer-plasma membrane.
A purpose of the plasma membrane is to: - Answer-form the outer boundary of a cell.
