WGU C190 Intro to Bio – Question
and Answers | Guaranteed Pass 2026
Water molecules binding to each other is called _______; water molecules binding to other
molecules is
called _______. - answer-Cohesion; adhesion
Water molecules form hydrogen bonds because water is - answer-Polar
Water can bind to the walls of these cells because they are _____ When water binds to the
walls of the
cells, this is called ________ - answer-Polar; adhesion
Water molecules within these cells will also bind to each other. What is this called? -
answer-Cohesion
Dissolving sugar in water makes a _______. The sugar is the _____ and the water is the _____ -
answer-
Solution; solute; solvent
As water moves up the plant, it carries matter with it (such as nutrients and some
hormones). What are
these materials called? - answer-Solutes
What characteristic of water allows a paperclip to float on the surface of the water. -
answer-Surface
tension
Why does mercury (Hg) not travel as far up the capillary tube as water does? - answer-
Mercury is not as
adhesive as water
If the plant gets too dry, the water column can break. This creates an air bubble in the
xylem. What
happens to the water when the air bubble forms? - answer-The water is still adhering to the
xylem walls,
but the water column is no longer continuous.
, Explain why plants produce smaller cells during dry seasons. - answer-The smaller cells are
more
resistant to air bubbles.
Explain why plants produce larger cells during wet seasons. - answer-These cells can
transport more
water.
Organic molecules take many different shapes. This is because: - answer-Carbon can form
up to four
covalent bonds with other molecules, allowing for a variety of structures
Which of the following molecules might be broken down (hydrolyzed) to produce simple
sugars? Select
all that apply; more than one is correct. - answer-Maltose (a disaccharide), cellulose, starch
Which molecule is abundant in seeds and is easily digested to yield glucose? - answer-Starch
Nonpolar molecules that lack highly electronegative atoms such as oxygen are - answer-
hydrophobic
Ionic substances and polar molecules are _____ because they dissolve other polar molecules
or
molecules with polar functional groups like hydroxyl groups. - answer-Hydrophillic
Nonpolar molecules are ______ because they usually contain many carbon hydrogen bonds
(C-H). -
answer-hydrophobic
_______ is the most abundant organic molecule on planet Earth. It is a polysaccharide that is
used as a
structural material in the cell walls of plants. You can get it out of grass, wood, old
newspapers, and crop
byproducts. - answer-Cellulose
Starch is an easily used starting point for fuel production. Why is it much harder to use
cellulose for the
same purpose? - answer-Cellulose is difficult to hydrolyze (digest)
Cellulose is naturally found in many foods, and it is used as an added ingredient in many
health food
products. Why might cellulose be a "healthy" addition to bread or breakfast cereal? -
answer-it slows the
and Answers | Guaranteed Pass 2026
Water molecules binding to each other is called _______; water molecules binding to other
molecules is
called _______. - answer-Cohesion; adhesion
Water molecules form hydrogen bonds because water is - answer-Polar
Water can bind to the walls of these cells because they are _____ When water binds to the
walls of the
cells, this is called ________ - answer-Polar; adhesion
Water molecules within these cells will also bind to each other. What is this called? -
answer-Cohesion
Dissolving sugar in water makes a _______. The sugar is the _____ and the water is the _____ -
answer-
Solution; solute; solvent
As water moves up the plant, it carries matter with it (such as nutrients and some
hormones). What are
these materials called? - answer-Solutes
What characteristic of water allows a paperclip to float on the surface of the water. -
answer-Surface
tension
Why does mercury (Hg) not travel as far up the capillary tube as water does? - answer-
Mercury is not as
adhesive as water
If the plant gets too dry, the water column can break. This creates an air bubble in the
xylem. What
happens to the water when the air bubble forms? - answer-The water is still adhering to the
xylem walls,
but the water column is no longer continuous.
, Explain why plants produce smaller cells during dry seasons. - answer-The smaller cells are
more
resistant to air bubbles.
Explain why plants produce larger cells during wet seasons. - answer-These cells can
transport more
water.
Organic molecules take many different shapes. This is because: - answer-Carbon can form
up to four
covalent bonds with other molecules, allowing for a variety of structures
Which of the following molecules might be broken down (hydrolyzed) to produce simple
sugars? Select
all that apply; more than one is correct. - answer-Maltose (a disaccharide), cellulose, starch
Which molecule is abundant in seeds and is easily digested to yield glucose? - answer-Starch
Nonpolar molecules that lack highly electronegative atoms such as oxygen are - answer-
hydrophobic
Ionic substances and polar molecules are _____ because they dissolve other polar molecules
or
molecules with polar functional groups like hydroxyl groups. - answer-Hydrophillic
Nonpolar molecules are ______ because they usually contain many carbon hydrogen bonds
(C-H). -
answer-hydrophobic
_______ is the most abundant organic molecule on planet Earth. It is a polysaccharide that is
used as a
structural material in the cell walls of plants. You can get it out of grass, wood, old
newspapers, and crop
byproducts. - answer-Cellulose
Starch is an easily used starting point for fuel production. Why is it much harder to use
cellulose for the
same purpose? - answer-Cellulose is difficult to hydrolyze (digest)
Cellulose is naturally found in many foods, and it is used as an added ingredient in many
health food
products. Why might cellulose be a "healthy" addition to bread or breakfast cereal? -
answer-it slows the
