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BIO 181 - Module 1 and 2 Questions and Answers New (2025/2026) Solved 100% Correct

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BIO 181 - Module 1 and 2

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BIO 181 - Module 1 And 2

What limits the paramecium from acquiring more complex functions? - ️️The paramecium is limited by the number of biomolecular machines that it can contain within itself due to lack of "space." Comparing a single-celled eukaryotic organism with a multicellular organism, such as yourself, ide...

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bio 181 module 1 and 2

Institution BIO 181 - Module 1 and 2
Course BIO 181 - Module 1 and 2

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BIO 181 - Module 1 and 2
What limits the paramecium from acquiring more complex functions? - ✔️✔️The
paramecium is limited by the number of biomolecular machines that it can contain within
itself due to lack of "space."

Comparing a single-celled eukaryotic organism with a multicellular organism, such as
yourself, identify the major difference from the list below. - ✔️✔️Division of labor
(multicellular only)
-escape from predator, finding a mate, find its own food, nucleus (both single-celled and
multicellular)

In cell Biology what can limit the progress of science? - ✔️✔️Technology

A single-celled eukaryotic organism: - ✔️✔️A. Has limited number of biomolecular
machines
B. Must find food, shelter, a mate and reproduce
C. Escape from predators
D. None of the above
D. a, b, c above (CORRECT ANSWER)

A normal cell is anchorage-dependent for growth and mortal. - ✔️✔️True

The paramecium discussed in class contained an organelle called the contractile
vacuole. This is the presumed precursor of the - ✔️✔️Kidney

Compared to bacteria, which of the cell types listed are NOT responsible for finding
food. - ✔️✔️A. Lymphocyte
B. Macrophage
C. Fibroblast
D. None of the above
E. Answers a, b, and c (CORRECT ANSWER)

In your own multicellular body, cells with different functions have different DNA. -
✔️✔️FALSE (DNA is the same even though the cell types/responsibilities differ)

A cancer cell will be anchorage-dependent for growth and immortal. - ✔️✔️FALSE
(Cancer cells are anchorage-INdependent for growth and are immortal)

In your own multicellular body, different cells in your body have a division of labor
between them. - ✔️✔️TRUE

The paramecium swims by way of using a flagella. - ✔️✔️FALSE (swims using cilia)

, Write a few sentences that explain what limits an individual cell from becoming more
complex. - ✔️✔️This means the individual cell, if a single-celled organism, is
responsible for all of the work and does not have a division of labor or different cell
types. An individual cell is limited by the number of biomolecular machines within itself.
This is due to a lack of "space" within the cell.

In order to examine cells which are smaller than can be detected by the human senses,
what needs to be used? - ✔️✔️Technology

A cell that is itself an organism must have a minimum of four needs present in lecture.
List these four things. - ✔️✔️1. find food
2. find shelter
3. find a mate
4. reproduce

The contractile vacuole of the paramecium is possibly an evolutionary precursor of the
kidney. - ✔️✔️TRUE

When cancel cells are crowded by surrounding cells, the cancer cells become spherical
and they can still go through cell division. - ✔️✔️TRUE (create a clump called a focus)

Why is it important to know the limitations of technology? - ✔️✔️Knowing the limitations
of technology allows one to know what they are capable of accomplishing with current
technology. Additionally, it can lead to the creation of new, further advanced technology
to solve new problems.

After a cell is pancake shaped in a cell culture dish, the order of events that occurs as a
cell walks is (pick the best order): - ✔️✔️Filapodia, lamellipodia, cell muscle, retraction
fiber

IT is presumed that the peroxisomes evolved in these primitive, proto-eukaryotes to
remove oxygen, which was toxic to the primitive cells. - ✔️✔️TRUE

The cytoskeleton gave rise to the nuclear envelope. - ✔️✔️FALSE (the infolded plasma
membrane may have led to the formation of the nuclear envelope)

The cytoskeleton enabled the primitive cell to become motile. - ✔️✔️TRUE

Loss of the cell wall is required for the endosymbiotic theory. - ✔️✔️TRUE

Motility improved fitness of these early cells because: - ✔️✔️It allowed them to move
away from predators and towards food.

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