2025/2026 Biology Test 2 test 1, Fall Semester
Exam Study Guide: Honors biology I, Biology Ch.
4, Chap 4 - Membrane Structure and Function,
Inquiry into life Chapter 3, Inquiry Into Life 14th
Edition - Chapter 4
Questions & Verified Correct answers (100% A+
Guarantee)
1. Which of the following is not true concerning the cell theory?
A. Virchow asserted that all cells come from preexisting cells.
B. Schleiden determined that all plants are made of cells. C. Schwann researched
animal tissues and discovered that they were all made of cells.
D. Hooke observed the cells of cork.
E. Leeuwenhoek first used the term "cells." - correct answer✔✔E
Organelles - correct answer✔✔tiny, specialized structures in eukaryotic cells
extracellular fluid - correct answer✔✔the watery medium outside the cell
A - correct answer✔✔The smallest unit that has all of the characteristics of life is the
A. cell.
B. tissue.
C. organ.
D. organ system.
E. organism.
What two components are commonly found in the extracellular matrix that help resist
stretching and provide resilience?
( ) proteins & polysaccharides
( ) proteins & phospholipids
( ) polysaccharides & phospholipids
( ) amino acids & phospholipids
( ) nucleic acids & proteins - correct answer✔✔PROteins & POLYsaccharides
A cell placed in a hypotonic solution will - correct answer✔✔Gain water
2. According to cell theory
A. all organisms are composed of tissues.
B. the smallest unit of life is a nucleus.
,C. animals but not plants are composed of cells.
D. a multicellular organism is composed of many cells.
E. new cells arise only from preexisting cells. - correct answer✔✔E
C - correct answer✔✔Which level of biological organization is composed of tissues?
A. organism
B. organ system
C. organ
D. cell
E. molecules
A differentially permeable membrane separates a molasses solution from distilled water.
With time, the - correct answer✔✔Molasses will become more diluted
Which function does the lipid bilayer component of the plasma membrane NOT provide
for the cell?
( ) defines a permeable boundary between the organized interior and the chaotic
external environment
( ) provides an impermeable, self-sealing membrane that keeps all internal living
processes sealed inside
( ) controls the exchange of molecules between one cell and adjacent cells or the
environment
( ) provides a fluid and flexible boundary that insulates the interior from the variations in
humidity, food, and other external conditions
( ) provides a matrix for proteins that regulate the exchange of molecules between the
inside and outside of the cell - correct answer✔✔provides an impermeable, self-sealing
membrane that keeps all internal living processes sealed inside
Cell theory - correct answer✔✔1) all organisms are composed of one or more cells
2) cells are the basic living unit of structure and function in organisms
3) all cells come only from other cells
fluid mosaic model - correct answer✔✔membrane is not rigid, it is flexible and changes
shape
Eukaryotic cells - correct answer✔✔cells that have a nucleus
makes it possible to distribute molecules in membrane, slight damage can be repaired,
allows membranes to fuse together - correct answer✔✔3 reasons fluidity is important
The cell membrane is composed of - correct answer✔✔lipids and proteins.
A membrane sac filled with large molecules of oil is suspended in a beaker of water.
What will happen? - correct answer✔✔Water will enter the sac and it will swell
,E - correct answer✔✔Which sequence correctly lists the different levels of biological
organization, from the smallest and simplest to the largest and most complex?
A. cells-organs-tissues-organ systems-organism
B. cells-tissues-organ systems-organs-organism
C. tissues-cells-organs-organ systems-organism
D. tissues-organs-organ systems-organsims-cells
E. cells-tissues-organs-organ systems-organisms
3. The body of a slime mold that flows over a rotten log appears to lack any partitioning
into distinct cells; however it does become cellular when it changes form and produces
spores. The surfaces of parasitic flatworms and some insect tissues are "syncytial"
layers of living material that developed from a single cell but now contains many nuclei
but lack partitioning by cell membranes. These tissues actively consume food and
produce wastes. Considering that the cell theory states that "all living things are
composed of cells," then
A. these tissues are not living because they violate the cell theory.
B. this proves some vital force is involved beyond normal cell structures in order to give
life to living organisms.
C. these tissues are obviously a bridge between nonliving and primitive living cells.
D. the general concept of life-is-cellular still holds since sometime in their life these
organisms still utilize - correct answer✔✔D
4. The cell theory states
A. all organisms are composed of only one cell.
B. organelles are the basic living unit of structure and function of organisms.
C. all cells come only from other cells.
D. all organisms are composed of only one cell AND organelles are the basic living unit
of structure and function of organisms.
E. all multicellular organisms are unicellular at some point in their life cycle. - correct
answer✔✔C
A - correct answer✔✔When you are overheated, you perspire, and when you are too
cold, you shiver to generate heat. Which property of life is best represented by this
example?
A. homeostasis
B. development
C. behavior
D. organization
E. adaptation
An isotonic solution means that the solute concentration outside the cell - correct
answer✔✔Is the same as inside the cell
, In certain cancerous cells, the cell divides continuously even in the absence of a growth
factor (signaling molecule) that indicates the cell should divide. Which of the following
could NOT explain this?
( ) a receptor molecule that is always turned off
( ) a receptor molecule that is always activated
( ) a transduction pathway that is always turned on
( ) a target protein that is always activated
( ) a gene for cell division that is expressed when it should not be - correct answer✔✔a
RECEPTOR molecule that is always turned OFF
Plasma membrane - correct answer✔✔a phospholipid bilayer in which protein
molecules are embedded. surrounds plant and animal cells
glycolipids - correct answer✔✔lipids with carbohydrates attached to them; important for
cellular identification
Cytoplasm - correct answer✔✔a semifluid medium that contains organelles
glycoproteins - correct answer✔✔proteins with carbohydrates attached to them;
important for cellular identification
Radioactive isotopes are used to tag proteins in the cell membranes of mouse cells.
These cells are then fused with human cells in cultures. What is the likely consequence
of the tagged mouse proteins? - correct answer✔✔The tagged proteins DRIFT
ACROSS cell membranes and are soon found dispersed across both human and
mouse cell membranes.
C - correct answer✔✔Which sequence of classification categories is in the proper order
from least to most inclusive?
A. genus, class, kingdom, domain, order, phylum, species, family
B. domain, class, genus, family, species, order, phylum, kingdom
C. species, genus, family, order, class, phylum, kingdom, domain
D. genus species, order, class, family, kingdom, domain, phylum
E. species, genus, family, class, order, phylum, kingdom, domain
5. Surface-area-to-volume ratios indicate
A. cells must exceed a certain minimum size.
B. as cells get larger, their surface area actually decreases. C. that the largest cells
have a less proportionate need for food intake and waste removal.
D. a chicken egg is one cell thus demonstrating the upper limit for metabolizing cell size.
E. as cells get larger, their surface area gets larger but at a slower rate than the volume
increases. - correct answer✔✔E
Exam Study Guide: Honors biology I, Biology Ch.
4, Chap 4 - Membrane Structure and Function,
Inquiry into life Chapter 3, Inquiry Into Life 14th
Edition - Chapter 4
Questions & Verified Correct answers (100% A+
Guarantee)
1. Which of the following is not true concerning the cell theory?
A. Virchow asserted that all cells come from preexisting cells.
B. Schleiden determined that all plants are made of cells. C. Schwann researched
animal tissues and discovered that they were all made of cells.
D. Hooke observed the cells of cork.
E. Leeuwenhoek first used the term "cells." - correct answer✔✔E
Organelles - correct answer✔✔tiny, specialized structures in eukaryotic cells
extracellular fluid - correct answer✔✔the watery medium outside the cell
A - correct answer✔✔The smallest unit that has all of the characteristics of life is the
A. cell.
B. tissue.
C. organ.
D. organ system.
E. organism.
What two components are commonly found in the extracellular matrix that help resist
stretching and provide resilience?
( ) proteins & polysaccharides
( ) proteins & phospholipids
( ) polysaccharides & phospholipids
( ) amino acids & phospholipids
( ) nucleic acids & proteins - correct answer✔✔PROteins & POLYsaccharides
A cell placed in a hypotonic solution will - correct answer✔✔Gain water
2. According to cell theory
A. all organisms are composed of tissues.
B. the smallest unit of life is a nucleus.
,C. animals but not plants are composed of cells.
D. a multicellular organism is composed of many cells.
E. new cells arise only from preexisting cells. - correct answer✔✔E
C - correct answer✔✔Which level of biological organization is composed of tissues?
A. organism
B. organ system
C. organ
D. cell
E. molecules
A differentially permeable membrane separates a molasses solution from distilled water.
With time, the - correct answer✔✔Molasses will become more diluted
Which function does the lipid bilayer component of the plasma membrane NOT provide
for the cell?
( ) defines a permeable boundary between the organized interior and the chaotic
external environment
( ) provides an impermeable, self-sealing membrane that keeps all internal living
processes sealed inside
( ) controls the exchange of molecules between one cell and adjacent cells or the
environment
( ) provides a fluid and flexible boundary that insulates the interior from the variations in
humidity, food, and other external conditions
( ) provides a matrix for proteins that regulate the exchange of molecules between the
inside and outside of the cell - correct answer✔✔provides an impermeable, self-sealing
membrane that keeps all internal living processes sealed inside
Cell theory - correct answer✔✔1) all organisms are composed of one or more cells
2) cells are the basic living unit of structure and function in organisms
3) all cells come only from other cells
fluid mosaic model - correct answer✔✔membrane is not rigid, it is flexible and changes
shape
Eukaryotic cells - correct answer✔✔cells that have a nucleus
makes it possible to distribute molecules in membrane, slight damage can be repaired,
allows membranes to fuse together - correct answer✔✔3 reasons fluidity is important
The cell membrane is composed of - correct answer✔✔lipids and proteins.
A membrane sac filled with large molecules of oil is suspended in a beaker of water.
What will happen? - correct answer✔✔Water will enter the sac and it will swell
,E - correct answer✔✔Which sequence correctly lists the different levels of biological
organization, from the smallest and simplest to the largest and most complex?
A. cells-organs-tissues-organ systems-organism
B. cells-tissues-organ systems-organs-organism
C. tissues-cells-organs-organ systems-organism
D. tissues-organs-organ systems-organsims-cells
E. cells-tissues-organs-organ systems-organisms
3. The body of a slime mold that flows over a rotten log appears to lack any partitioning
into distinct cells; however it does become cellular when it changes form and produces
spores. The surfaces of parasitic flatworms and some insect tissues are "syncytial"
layers of living material that developed from a single cell but now contains many nuclei
but lack partitioning by cell membranes. These tissues actively consume food and
produce wastes. Considering that the cell theory states that "all living things are
composed of cells," then
A. these tissues are not living because they violate the cell theory.
B. this proves some vital force is involved beyond normal cell structures in order to give
life to living organisms.
C. these tissues are obviously a bridge between nonliving and primitive living cells.
D. the general concept of life-is-cellular still holds since sometime in their life these
organisms still utilize - correct answer✔✔D
4. The cell theory states
A. all organisms are composed of only one cell.
B. organelles are the basic living unit of structure and function of organisms.
C. all cells come only from other cells.
D. all organisms are composed of only one cell AND organelles are the basic living unit
of structure and function of organisms.
E. all multicellular organisms are unicellular at some point in their life cycle. - correct
answer✔✔C
A - correct answer✔✔When you are overheated, you perspire, and when you are too
cold, you shiver to generate heat. Which property of life is best represented by this
example?
A. homeostasis
B. development
C. behavior
D. organization
E. adaptation
An isotonic solution means that the solute concentration outside the cell - correct
answer✔✔Is the same as inside the cell
, In certain cancerous cells, the cell divides continuously even in the absence of a growth
factor (signaling molecule) that indicates the cell should divide. Which of the following
could NOT explain this?
( ) a receptor molecule that is always turned off
( ) a receptor molecule that is always activated
( ) a transduction pathway that is always turned on
( ) a target protein that is always activated
( ) a gene for cell division that is expressed when it should not be - correct answer✔✔a
RECEPTOR molecule that is always turned OFF
Plasma membrane - correct answer✔✔a phospholipid bilayer in which protein
molecules are embedded. surrounds plant and animal cells
glycolipids - correct answer✔✔lipids with carbohydrates attached to them; important for
cellular identification
Cytoplasm - correct answer✔✔a semifluid medium that contains organelles
glycoproteins - correct answer✔✔proteins with carbohydrates attached to them;
important for cellular identification
Radioactive isotopes are used to tag proteins in the cell membranes of mouse cells.
These cells are then fused with human cells in cultures. What is the likely consequence
of the tagged mouse proteins? - correct answer✔✔The tagged proteins DRIFT
ACROSS cell membranes and are soon found dispersed across both human and
mouse cell membranes.
C - correct answer✔✔Which sequence of classification categories is in the proper order
from least to most inclusive?
A. genus, class, kingdom, domain, order, phylum, species, family
B. domain, class, genus, family, species, order, phylum, kingdom
C. species, genus, family, order, class, phylum, kingdom, domain
D. genus species, order, class, family, kingdom, domain, phylum
E. species, genus, family, class, order, phylum, kingdom, domain
5. Surface-area-to-volume ratios indicate
A. cells must exceed a certain minimum size.
B. as cells get larger, their surface area actually decreases. C. that the largest cells
have a less proportionate need for food intake and waste removal.
D. a chicken egg is one cell thus demonstrating the upper limit for metabolizing cell size.
E. as cells get larger, their surface area gets larger but at a slower rate than the volume
increases. - correct answer✔✔E
