Biology 121 Exam 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
the passive movement of molecules from an area of higher concentration to a lower
concentration is called __________. - CORRECT ANSWER - Diffusion
An animal cell placed in a hypertonic solution will __________. - CORRECT ANSWER -
lose water by osmosis and shrivel
In osmosis, water moves across a selectively permeable membrane toward the ____ solution; that
is toward the solution with the ______ solute concentration. - CORRECT ANSWER -
hypertonic....greater
Example of Osmosis - CORRECT ANSWER - water enters plant by passing through the
root cell membranes
The use of energy to move molecules across a membrane defines __________. - CORRECT
ANSWER - active transport
Term sometimes called "cell eating" - CORRECT ANSWER - Phagocytosis
Which of the following is a function of the cell cycle that, in eukaryotes, involves mitosis? -
CORRECT ANSWER - Cell replacement
Asexual Reproduction ____________. - CORRECT ANSWER - can produce offspring
genetically identical to the one single parent
Most of an organism's DNA is carried by its _____. - CORRECT ANSWER -
chromosomes
, With the exception of gametes, a human cell contains _____ chromosomes. - CORRECT
ANSWER - 46 total, 23 pairs
The Cell cycle is a series of events that occur in which order? - CORRECT ANSWER -
G1, S, G2, mitosis, cytokinesis
Replication of chromosome DNA occurs - CORRECT ANSWER - before a cell divides
Stages of the cell cycle - CORRECT ANSWER - interphase, prophase, metaphase,
anaphase, telophase, cytokinesis
4 stages of mitosis - CORRECT ANSWER - prophase, metaphase, anaphase, telophase
What must happen before a cell can begin mitosis? - CORRECT ANSWER - The
chromosomes must be duplicated.
The centromes move away from each other and the nuclear envelope breaks up during which
phase of mitosis? - CORRECT ANSWER - Prophase
The chromosomes line up in the center of the cell during which phase of mitosis? - CORRECT
ANSWER - metaphase
sister chromatids separate and move toward opposite poles in which phase of mitosis? -
CORRECT ANSWER - anaphase
The chromosomes arrive at the poles and nuclear envelopes form during which phase of mitosis?
- CORRECT ANSWER - telophase
at the end of the miotic phase, the cytoplasm divides in a process called _______. - CORRECT
ANSWER - Cytokinesis
Exam Questions and CORRECT Answers
the passive movement of molecules from an area of higher concentration to a lower
concentration is called __________. - CORRECT ANSWER - Diffusion
An animal cell placed in a hypertonic solution will __________. - CORRECT ANSWER -
lose water by osmosis and shrivel
In osmosis, water moves across a selectively permeable membrane toward the ____ solution; that
is toward the solution with the ______ solute concentration. - CORRECT ANSWER -
hypertonic....greater
Example of Osmosis - CORRECT ANSWER - water enters plant by passing through the
root cell membranes
The use of energy to move molecules across a membrane defines __________. - CORRECT
ANSWER - active transport
Term sometimes called "cell eating" - CORRECT ANSWER - Phagocytosis
Which of the following is a function of the cell cycle that, in eukaryotes, involves mitosis? -
CORRECT ANSWER - Cell replacement
Asexual Reproduction ____________. - CORRECT ANSWER - can produce offspring
genetically identical to the one single parent
Most of an organism's DNA is carried by its _____. - CORRECT ANSWER -
chromosomes
, With the exception of gametes, a human cell contains _____ chromosomes. - CORRECT
ANSWER - 46 total, 23 pairs
The Cell cycle is a series of events that occur in which order? - CORRECT ANSWER -
G1, S, G2, mitosis, cytokinesis
Replication of chromosome DNA occurs - CORRECT ANSWER - before a cell divides
Stages of the cell cycle - CORRECT ANSWER - interphase, prophase, metaphase,
anaphase, telophase, cytokinesis
4 stages of mitosis - CORRECT ANSWER - prophase, metaphase, anaphase, telophase
What must happen before a cell can begin mitosis? - CORRECT ANSWER - The
chromosomes must be duplicated.
The centromes move away from each other and the nuclear envelope breaks up during which
phase of mitosis? - CORRECT ANSWER - Prophase
The chromosomes line up in the center of the cell during which phase of mitosis? - CORRECT
ANSWER - metaphase
sister chromatids separate and move toward opposite poles in which phase of mitosis? -
CORRECT ANSWER - anaphase
The chromosomes arrive at the poles and nuclear envelopes form during which phase of mitosis?
- CORRECT ANSWER - telophase
at the end of the miotic phase, the cytoplasm divides in a process called _______. - CORRECT
ANSWER - Cytokinesis
