Biology 160 exam 1 Questions With All
Correct Answers
Define biology. Correct answer-Biology is the scientific study of life and is the branch of science
that studies living organisms and the way organisms interact with their environments.
What are the characteristics of life? Correct answer-Be made of materials organized in a
hierarchical pattern. Use energy and raw materials to survive. Sense and respond to changing
environments and maintain internal stability, or homeostasis. Grow, develop and reproduce with the
help of DNA. Evolve.
The cell is..... Correct answer-the smallest unit that displays all of these characteristics. Also, the
fundamental unit of life.
Matter is.... Correct answer-any substance that has mass and takes up space.
All matter can be classified in one of two categories: Correct answer-biotic (living) or abiotic
(nonliving)
To be classified as biotic..... Correct answer-all of the required conditions for life must be met or
have been met in the past.
hierarchy of life consists of..... Correct answer-atom, molecule, Macromolecules, cell, organelles,
microorganisms. Tissues, Organs, organ system, Organisms, population, community. ecosystem.
Biosphere
What level of organization is found within all of the other levels Correct answer-population
Emergent Properties Correct answer-Characteristics of a system that do not appear in any one of
its component parts alone, but that appear when all parts are combined.
Life is organized into.... Correct answer-hierarchical levels of increasing complexity
Life is an emergent property, and one that appears at... Correct answer-the cellular level of
organization.
Molecules are not alive, but they are... Correct answer-the components of life.
What is the first level of hierarchical organization that possesses the emergent property of "life?"
Correct answer-cell
Viruses contain genetic information in the form of either... Correct answer-DNA or RNA.
In order to reproduce, a virus must infect a host cell and hijack... Correct answer-the host cell's
machinery.
Organelle Correct answer-A compartment inside the cells of eukaryotes that contain specific
groups of macromolecules and carry out specific cellular functions.
Structure determines... Correct answer-function.
, Living organisms maintain..... Correct answer-homeostasis.
Energy flows through living systems; matter.... Correct answer-is recycled
Life's components are.... Correct answer-interconnected and interdependent
Organisms grow, develop, and.... Correct answer-reproduce.
evolutionary processes explain both the unity and.... Correct answer-adaptive diversity of life
The structure of something is determined by two factors.... Correct answer-its three-dimensional
shape, and the materials from which it is made.
Enzyme Correct answer-A protein that speeds up the rate of chemical reactions that support life.
Cells typically keep their internal pH (acidity) within a narrow range. This is important because....
Correct answer-changes in pH can cause molecules like enzymes to change their shapes.
Homeostasis Correct answer-The tendency of organisms and cells to maintain stable internal
conditions. The term comes from the Greek words homeo (same, alike) and stasis (standing).
Ultimately, if homeostasis is not restored, an organism will.... Correct answer-die.
Humans maintain a blood pH between 7.35 and 7.45. In order to maintain homeostasis, how will
your body respond if your blood pH drops to 7.0? Correct answer-If you blood pH is 7.0, your body
will raise your pH.
Matter is made of... Correct answer-atoms.
Any matter an organism needs but cannot make for itself is considered a _____ for that organism
Correct answer-Nutrient
Both nutrients and wastes are made of atoms; they occupy space and have.... Correct answer-mass
The atoms retain their ____ through the processes of life, even though they can be combined with
other atoms in different ways. Correct answer-Identity
Atom Correct answer-The basic unit of matter that cannot be further broken down without losing
its unique properties. One atom consists of a dense nucleus surrounded by a cloud of electrons.
Energy Correct answer-The capacity to do work or to make a change in the location, temperature,
or structure of matter.
Energy flows through living systems, changing... Correct answer-forms as it goes
Matter cycles within... Correct answer-living systems.
All organisms grow and develop. Growth is just an increase in size. In development... Correct
answer-structure and function change in an orderly way as an organism passes through its life cycle
Correct Answers
Define biology. Correct answer-Biology is the scientific study of life and is the branch of science
that studies living organisms and the way organisms interact with their environments.
What are the characteristics of life? Correct answer-Be made of materials organized in a
hierarchical pattern. Use energy and raw materials to survive. Sense and respond to changing
environments and maintain internal stability, or homeostasis. Grow, develop and reproduce with the
help of DNA. Evolve.
The cell is..... Correct answer-the smallest unit that displays all of these characteristics. Also, the
fundamental unit of life.
Matter is.... Correct answer-any substance that has mass and takes up space.
All matter can be classified in one of two categories: Correct answer-biotic (living) or abiotic
(nonliving)
To be classified as biotic..... Correct answer-all of the required conditions for life must be met or
have been met in the past.
hierarchy of life consists of..... Correct answer-atom, molecule, Macromolecules, cell, organelles,
microorganisms. Tissues, Organs, organ system, Organisms, population, community. ecosystem.
Biosphere
What level of organization is found within all of the other levels Correct answer-population
Emergent Properties Correct answer-Characteristics of a system that do not appear in any one of
its component parts alone, but that appear when all parts are combined.
Life is organized into.... Correct answer-hierarchical levels of increasing complexity
Life is an emergent property, and one that appears at... Correct answer-the cellular level of
organization.
Molecules are not alive, but they are... Correct answer-the components of life.
What is the first level of hierarchical organization that possesses the emergent property of "life?"
Correct answer-cell
Viruses contain genetic information in the form of either... Correct answer-DNA or RNA.
In order to reproduce, a virus must infect a host cell and hijack... Correct answer-the host cell's
machinery.
Organelle Correct answer-A compartment inside the cells of eukaryotes that contain specific
groups of macromolecules and carry out specific cellular functions.
Structure determines... Correct answer-function.
, Living organisms maintain..... Correct answer-homeostasis.
Energy flows through living systems; matter.... Correct answer-is recycled
Life's components are.... Correct answer-interconnected and interdependent
Organisms grow, develop, and.... Correct answer-reproduce.
evolutionary processes explain both the unity and.... Correct answer-adaptive diversity of life
The structure of something is determined by two factors.... Correct answer-its three-dimensional
shape, and the materials from which it is made.
Enzyme Correct answer-A protein that speeds up the rate of chemical reactions that support life.
Cells typically keep their internal pH (acidity) within a narrow range. This is important because....
Correct answer-changes in pH can cause molecules like enzymes to change their shapes.
Homeostasis Correct answer-The tendency of organisms and cells to maintain stable internal
conditions. The term comes from the Greek words homeo (same, alike) and stasis (standing).
Ultimately, if homeostasis is not restored, an organism will.... Correct answer-die.
Humans maintain a blood pH between 7.35 and 7.45. In order to maintain homeostasis, how will
your body respond if your blood pH drops to 7.0? Correct answer-If you blood pH is 7.0, your body
will raise your pH.
Matter is made of... Correct answer-atoms.
Any matter an organism needs but cannot make for itself is considered a _____ for that organism
Correct answer-Nutrient
Both nutrients and wastes are made of atoms; they occupy space and have.... Correct answer-mass
The atoms retain their ____ through the processes of life, even though they can be combined with
other atoms in different ways. Correct answer-Identity
Atom Correct answer-The basic unit of matter that cannot be further broken down without losing
its unique properties. One atom consists of a dense nucleus surrounded by a cloud of electrons.
Energy Correct answer-The capacity to do work or to make a change in the location, temperature,
or structure of matter.
Energy flows through living systems, changing... Correct answer-forms as it goes
Matter cycles within... Correct answer-living systems.
All organisms grow and develop. Growth is just an increase in size. In development... Correct
answer-structure and function change in an orderly way as an organism passes through its life cycle
