LSUE Biology 1001 midterm - j.fontenot, Biology 1001 Midterm
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You've been experiencing acid indigestion lately, and you'd like a quick fix
for the problem. You do a little research on the Internet and discover that
your problem is caused by excess stomach acid. In the pharmacy aisles,
however, you're having a little trouble deciding what to purchase to
address the problem. At the
pharmacy counter, the clerk recommends that you purchase PEPCID AC or
Alka- Seltzer tablets.
If you were able to chemically analyze your stomach fluids 30 minutes
after taking two tablets, you would find. a. more hydrogen ions.
b. fewer hydrogen ions.
c. the same number of hydrogen ions.
d. that the pH in your stomach has decreased.
Fewer hydrogen ions
,Oxygen crosses a plasma membrane by
a. osmosis.
b. active transport.
c. pinocytosis.
d. passive transport.
passive transport.
Certain cells that line the stomach synthesize a digestive enzyme and
secrete it into the stomach. This enzyme is a protein. Which of the
following processes
could be responsible for its secretion?
a. endocytosis
b. exocytosis
c. diffusion
d. pinocytosis
exocytosis
Which of the following processes can move a solute against its
concentration gradient?
a. osmosis
b. passive transport
c. facilitated diffusion
d. active transport
active transport
,Osmosis can be defined as
a. the diffusion of water.
b. the diffusion of nonpolar molecules.
c. active transport.
d. the diffusion of a solute.
the diffusion of water.
Which of the following statements regarding thermodynamics is false?
a. Thermodynamics is the study of energy transformations that
occur in a collection of matter.
b. A single cell or the planet Earth could be a thermodynamic system.
c. An open system exchanges both energy and matter with its
surroundings.
d. An automobile engine is a closed system because it does not
exchange energy and matter with its surroundings.
An automobile engine is a closed system because it does not exchange
energy and matter with its surroundings.
, When two aqueous solutions that differ in solute concentration are placed
on
either side of a semipermeable membrane and osmosis is allowed to
take place, the water will
a. exhibit a net movement to the side with higher free water concentration.
b. exhibit an equal movement in both directions across the membrane.
c. exhibit a net movement to the side with lower free water concentration.
d. exhibit NO movement at all.
e. exhibit a net movement to the side with lower solute concentration.
exhibit a net movement to the side with lower free water concentration.
– Fontenot Most Recent Exam Actual Complete Real Exam
Questions And Correct Answers (Verified Answers) Already
Graded A+ | Guaranteed Success!! | Newest Exam | Just
Released!!
You've been experiencing acid indigestion lately, and you'd like a quick fix
for the problem. You do a little research on the Internet and discover that
your problem is caused by excess stomach acid. In the pharmacy aisles,
however, you're having a little trouble deciding what to purchase to
address the problem. At the
pharmacy counter, the clerk recommends that you purchase PEPCID AC or
Alka- Seltzer tablets.
If you were able to chemically analyze your stomach fluids 30 minutes
after taking two tablets, you would find. a. more hydrogen ions.
b. fewer hydrogen ions.
c. the same number of hydrogen ions.
d. that the pH in your stomach has decreased.
Fewer hydrogen ions
,Oxygen crosses a plasma membrane by
a. osmosis.
b. active transport.
c. pinocytosis.
d. passive transport.
passive transport.
Certain cells that line the stomach synthesize a digestive enzyme and
secrete it into the stomach. This enzyme is a protein. Which of the
following processes
could be responsible for its secretion?
a. endocytosis
b. exocytosis
c. diffusion
d. pinocytosis
exocytosis
Which of the following processes can move a solute against its
concentration gradient?
a. osmosis
b. passive transport
c. facilitated diffusion
d. active transport
active transport
,Osmosis can be defined as
a. the diffusion of water.
b. the diffusion of nonpolar molecules.
c. active transport.
d. the diffusion of a solute.
the diffusion of water.
Which of the following statements regarding thermodynamics is false?
a. Thermodynamics is the study of energy transformations that
occur in a collection of matter.
b. A single cell or the planet Earth could be a thermodynamic system.
c. An open system exchanges both energy and matter with its
surroundings.
d. An automobile engine is a closed system because it does not
exchange energy and matter with its surroundings.
An automobile engine is a closed system because it does not exchange
energy and matter with its surroundings.
, When two aqueous solutions that differ in solute concentration are placed
on
either side of a semipermeable membrane and osmosis is allowed to
take place, the water will
a. exhibit a net movement to the side with higher free water concentration.
b. exhibit an equal movement in both directions across the membrane.
c. exhibit a net movement to the side with lower free water concentration.
d. exhibit NO movement at all.
e. exhibit a net movement to the side with lower solute concentration.
exhibit a net movement to the side with lower free water concentration.
