©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
Bio 1500 Final Exam Questions And Answers
|Latest 2025 | Guaranteed Pass
What is diffusion? - Answer✔the spontaneous movement of molecules away from areas of
highest density
One area in a cell has a higher density of a certain type of molecule compared to a neighboring
area. This situation describes: - Answer✔a concentration gradient
The highest rates of diffusion are associated with (choose all that are correct!!): - Answer✔-high
temperatures
-large diffusion surface area
-steep concentration gradient
After molecules have moved around until there is no longer a concentration gradient, how do
the molecules behave? - Answer✔they continue moving, but their density remains relatively
even throughout the space
How does facilitated transport differ from diffusion? - Answer✔in facilitated transport, the
substance passes through a pore, or tunnel, inside other molecules in the membrane
Which three of the following are types of transport proteins? - Answer✔-aquaporins
-channel proteins
-carrier proteins
What benefit do cells obtain by using facilitated transport instead of simple (=unfacilitated)
diffusion to move material across a membrane? - Answer✔Some molecules have positive and
negative regions (i.e. polarity) that prevent them from moving easily through the membrane;
facilitated transport overcomes this problem
What does it mean if a channel is gated? - Answer✔sometimes the channel allows molecules to
pass through, and sometimes it doesn't
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, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What is the difference (or relationship) between the terms diffusion and osmosis? -
Answer✔they both function in the same way, but osmosis refers specifically to the diffusion of
water molecules
Which of the following are the four categories of organic molecules? Note: the question asks
for the 4 categories, not for specific examples of organic molecules, and not for the building
blocks of organic molecules - Answer✔-carbohydrates
-lipids
-proteins
-nucleic acids
If a molecule is described as 'organic,' then which of the following statements must be true? -
Answer✔it contains carbon
Which of the following are examples of carbohydrates? Choose 3 answers from the list below. -
Answer✔-glucose
-cellulose
-chitin
Which of the following are examples of lipids - Answer✔-olive oil
-bees wax
-bacon fat
When a fat is described as 'saturated,' what is it saturated with? - Answer✔hydrogen
Match the following organic molecules with their building blocks - Answer✔- proteins: amino
acids
- carbohydrates: simple sugars
- nucleic acids: nucleotides
- lipids: fatty acids
Which of the following foods is likely to contain the most cellulose? - Answer✔a serving of
broccoli
Phospholipids are important components of which cellular structure? - Answer✔membranes
What is the result of dehydration synthesis? - Answer✔Two molecules form a chemical bond
with each other
Which of the following could be the outcome of hydrolysis? - Answer✔A starch is broken into
simple sugar molecules
2|Page
Bio 1500 Final Exam Questions And Answers
|Latest 2025 | Guaranteed Pass
What is diffusion? - Answer✔the spontaneous movement of molecules away from areas of
highest density
One area in a cell has a higher density of a certain type of molecule compared to a neighboring
area. This situation describes: - Answer✔a concentration gradient
The highest rates of diffusion are associated with (choose all that are correct!!): - Answer✔-high
temperatures
-large diffusion surface area
-steep concentration gradient
After molecules have moved around until there is no longer a concentration gradient, how do
the molecules behave? - Answer✔they continue moving, but their density remains relatively
even throughout the space
How does facilitated transport differ from diffusion? - Answer✔in facilitated transport, the
substance passes through a pore, or tunnel, inside other molecules in the membrane
Which three of the following are types of transport proteins? - Answer✔-aquaporins
-channel proteins
-carrier proteins
What benefit do cells obtain by using facilitated transport instead of simple (=unfacilitated)
diffusion to move material across a membrane? - Answer✔Some molecules have positive and
negative regions (i.e. polarity) that prevent them from moving easily through the membrane;
facilitated transport overcomes this problem
What does it mean if a channel is gated? - Answer✔sometimes the channel allows molecules to
pass through, and sometimes it doesn't
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What is the difference (or relationship) between the terms diffusion and osmosis? -
Answer✔they both function in the same way, but osmosis refers specifically to the diffusion of
water molecules
Which of the following are the four categories of organic molecules? Note: the question asks
for the 4 categories, not for specific examples of organic molecules, and not for the building
blocks of organic molecules - Answer✔-carbohydrates
-lipids
-proteins
-nucleic acids
If a molecule is described as 'organic,' then which of the following statements must be true? -
Answer✔it contains carbon
Which of the following are examples of carbohydrates? Choose 3 answers from the list below. -
Answer✔-glucose
-cellulose
-chitin
Which of the following are examples of lipids - Answer✔-olive oil
-bees wax
-bacon fat
When a fat is described as 'saturated,' what is it saturated with? - Answer✔hydrogen
Match the following organic molecules with their building blocks - Answer✔- proteins: amino
acids
- carbohydrates: simple sugars
- nucleic acids: nucleotides
- lipids: fatty acids
Which of the following foods is likely to contain the most cellulose? - Answer✔a serving of
broccoli
Phospholipids are important components of which cellular structure? - Answer✔membranes
What is the result of dehydration synthesis? - Answer✔Two molecules form a chemical bond
with each other
Which of the following could be the outcome of hydrolysis? - Answer✔A starch is broken into
simple sugar molecules
2|Page
