BIOLOGY I EXAM #2
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,Question 1
cell theory
Correct Answer
the cell is the fundamental unit of life in all organisms & cells come only from preexisting cells
Question 2
key functions of lipids
Correct Answer
makes up cell membrane, energy storage
Question 3
2 primary functions of the cell membrane
Correct Answer
1. define cell boundary
2. regulation of molecules
Question 4
main components of the cell membrane
Correct Answer
- lipids
- proteins
- carbohydrates
Question 5
what contributes to the fluidity of a membrane?
Correct Answer
lipid types & characteristics of fatty acid chains
Question 6
amphipathic
Correct Answer
having both hydrophilic & hydrophobic regions
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,Question 7
which part of a phospholipid is hydrophilic?
Correct Answer
head
Question 8
which part of a phospholipid is hydrophobic?
Correct Answer
fatty acid tails
Question 9
main function of a phospholipid
Correct Answer
forms the cell membrane
Question 10
lipid bilayer
Correct Answer
2 layers of lipids
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, Question 11
which part of the phospholipid is tucked inside the membrane?
Correct Answer
nonpolar, hydrophobic tail
Question 12
why is the polar part of the phospholipid facing outward?
Correct Answer
can form bonds
Question 13
liposome
Correct Answer
spherical bilayer structure
- forms in aqueous environment at neutral pH
Question 14
why is pH important?
Correct Answer
ensures polar head is in ionized form--makes them hydrophilic
Trusted by thousands of students and professionals worldwide Page 4 of 37
120+ (2025-2026 Full Exam Kit)
Solved Q&A | Correct & Verified
Answers
100% Guarantee Pass
✓ This Exam contains: Biology I Exam #2
✓ 100% Accurate Questions and Answers
✓ 100% Guarantee Pass - Verified by Experts
✓ Each Question Includes The Correct Answer
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Trusted by thousands of students and professionals worldwide Page 1 of 37
,Question 1
cell theory
Correct Answer
the cell is the fundamental unit of life in all organisms & cells come only from preexisting cells
Question 2
key functions of lipids
Correct Answer
makes up cell membrane, energy storage
Question 3
2 primary functions of the cell membrane
Correct Answer
1. define cell boundary
2. regulation of molecules
Question 4
main components of the cell membrane
Correct Answer
- lipids
- proteins
- carbohydrates
Question 5
what contributes to the fluidity of a membrane?
Correct Answer
lipid types & characteristics of fatty acid chains
Question 6
amphipathic
Correct Answer
having both hydrophilic & hydrophobic regions
Trusted by thousands of students and professionals worldwide Page 2 of 37
,Question 7
which part of a phospholipid is hydrophilic?
Correct Answer
head
Question 8
which part of a phospholipid is hydrophobic?
Correct Answer
fatty acid tails
Question 9
main function of a phospholipid
Correct Answer
forms the cell membrane
Question 10
lipid bilayer
Correct Answer
2 layers of lipids
Trusted by thousands of students and professionals worldwide Page 3 of 37
, Question 11
which part of the phospholipid is tucked inside the membrane?
Correct Answer
nonpolar, hydrophobic tail
Question 12
why is the polar part of the phospholipid facing outward?
Correct Answer
can form bonds
Question 13
liposome
Correct Answer
spherical bilayer structure
- forms in aqueous environment at neutral pH
Question 14
why is pH important?
Correct Answer
ensures polar head is in ionized form--makes them hydrophilic
Trusted by thousands of students and professionals worldwide Page 4 of 37
