BIOS 256 - Week 5 Exam & Lab: Fluid,
Electrolyte, and Acid-Base Balancing (Latest
Update) Questions & Certified
Answers | 100% Correct - Chamberlain
Quiz_________________?
Which term best describes a positively charged ion in an
aqueous solution?
Salt
Cofactor
Cation
Anion
Electrolyte -
Answer
Cation
Though electrolytes are charged particles in an aqueous
solution, it is too general, and the question asks specifically for
the positively charged ion, the cation.
Salts are formed by the combination of acids and bases. Anions
are negatively charged ions. Cofactors are metallic ions like Fe
(iron) and Mg (magnesium) that are required for enzyme
activity. Electrolytes can either be positively charged or
negatively charged ions.
1
, Quiz_________________?
What structure makes up the outer boundaries of human cells?
Peptidoglycan
Endoplasmic reticulum
Plasma membrane
Capsule
Cell wall -
Answer
Plasma membrane
Human cells are surrounded by a phospholipid bilayer plasma
membrane, sometimes referred to as the cell membrane.
Cell walls are found in plants and not humans. Peptidoglycan
layer and capsules are found in bacteria. Endoplasmic
reticulum refers to a folded organelle within the cell.
Quiz_________________?
What term can be described as the diffusion of water across a
semi-permeable membrane from an area of low solute
concentration to an area of high solute concentration?
Endocytosis
Primary active transport
2
, Simple diffusion
Osmosis
Facilitated diffusion -
Answer
Osmosis
Osmosis is the primary method of moving water across a
membrane utilizing osmotic gradients created by the solutes.
High concentrations of solutes have greater osmotic pressure,
forcing water to follow the solutes.
Facilitated diffusion is a general term that can include osmosis,
but osmosis is the most correct answer. Endocytosis and
primary active transport require energy, and diffusion implies
a passive movement.
Quiz_________________?
Which organ monitors and maintains the water-electrolyte
balance?
Heart
Kidneys
Liver
Skeletal muscle
Skin -
Answer
3
, Kidneys
The kidneys are the primary regulators of water-electrolyte
balance, conserving what the body needs and expelling excess
and waste.
The other structures do not both monitor and maintain this
balance.
Quiz_________________?
Which solution would cause a cell placed in it to lose volume as
water leaves the cell?
Hypertonic
Distilled water
Hypotonic
Viscous
Isotonic -
Answer
Hypertonic
Hypertonic solutions are those with a higher solute
concentration than the intracellular space, leading to fluid
leaving the cell and the membrane becoming shriveled.
Hypotonic solutions, such as distilled water, are those with a
lower solute concentration than the intracellular space, leading
4
Electrolyte, and Acid-Base Balancing (Latest
Update) Questions & Certified
Answers | 100% Correct - Chamberlain
Quiz_________________?
Which term best describes a positively charged ion in an
aqueous solution?
Salt
Cofactor
Cation
Anion
Electrolyte -
Answer
Cation
Though electrolytes are charged particles in an aqueous
solution, it is too general, and the question asks specifically for
the positively charged ion, the cation.
Salts are formed by the combination of acids and bases. Anions
are negatively charged ions. Cofactors are metallic ions like Fe
(iron) and Mg (magnesium) that are required for enzyme
activity. Electrolytes can either be positively charged or
negatively charged ions.
1
, Quiz_________________?
What structure makes up the outer boundaries of human cells?
Peptidoglycan
Endoplasmic reticulum
Plasma membrane
Capsule
Cell wall -
Answer
Plasma membrane
Human cells are surrounded by a phospholipid bilayer plasma
membrane, sometimes referred to as the cell membrane.
Cell walls are found in plants and not humans. Peptidoglycan
layer and capsules are found in bacteria. Endoplasmic
reticulum refers to a folded organelle within the cell.
Quiz_________________?
What term can be described as the diffusion of water across a
semi-permeable membrane from an area of low solute
concentration to an area of high solute concentration?
Endocytosis
Primary active transport
2
, Simple diffusion
Osmosis
Facilitated diffusion -
Answer
Osmosis
Osmosis is the primary method of moving water across a
membrane utilizing osmotic gradients created by the solutes.
High concentrations of solutes have greater osmotic pressure,
forcing water to follow the solutes.
Facilitated diffusion is a general term that can include osmosis,
but osmosis is the most correct answer. Endocytosis and
primary active transport require energy, and diffusion implies
a passive movement.
Quiz_________________?
Which organ monitors and maintains the water-electrolyte
balance?
Heart
Kidneys
Liver
Skeletal muscle
Skin -
Answer
3
, Kidneys
The kidneys are the primary regulators of water-electrolyte
balance, conserving what the body needs and expelling excess
and waste.
The other structures do not both monitor and maintain this
balance.
Quiz_________________?
Which solution would cause a cell placed in it to lose volume as
water leaves the cell?
Hypertonic
Distilled water
Hypotonic
Viscous
Isotonic -
Answer
Hypertonic
Hypertonic solutions are those with a higher solute
concentration than the intracellular space, leading to fluid
leaving the cell and the membrane becoming shriveled.
Hypotonic solutions, such as distilled water, are those with a
lower solute concentration than the intracellular space, leading
4
