Seeley's Anatomy and Physiology
Chapter 3 2025/2026 Exam Questions
and Correct Answers | New Update
plasma membrane - 🧠ANSWER ✔✔forms the outer boundary of the cell, through
which the cell interacts with its external environment
nucleus - 🧠ANSWER ✔✔directs cell activities, most of which take place in the
cytoplasm; usually located near the center of the cell
organelle - 🧠ANSWER ✔✔specialized structure that performs a specific
function,aka little organs. The number and type of these is related to the specific
structure and function of a cell
intracellular - 🧠ANSWER ✔✔substances inside the cell
extracellular - 🧠ANSWER ✔✔substances outside the cell
membrane potential - 🧠ANSWER ✔✔charge difference across the plasma
membrane resulting from the regulation of ion movement
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,glycocalyx - 🧠ANSWER ✔✔collection of glycolipids, glycoproteins and
carbohydrates on the outer surface of the plasma membrane
phospholipids and cholesterol - 🧠ANSWER ✔✔predominant lipids of the plasma
membrane
lipid bilayer - 🧠ANSWER ✔✔double layer of phospholipid molecules
hydrophilic - 🧠ANSWER ✔✔"water-loving"
hydrophobic - 🧠ANSWER ✔✔"water-fearing"
fluid-mosaic model - 🧠ANSWER ✔✔model suggesting that the plasma membrane
is neither rigid nor static in structure, but is highly flexible and can change its
shape and composition through time
cholesterol - 🧠ANSWER ✔✔limits the movement of phospholipids, providing
stability to the plasma membrane; maintains the fluid nature of the membrane
marker molecule - 🧠ANSWER ✔✔cell surface molecule that allows a cell to
identify other cells or other molecules. They are mostly glycoproteins or
glycolipids
glycoprotein - 🧠ANSWER ✔✔protein with attached carbohydrate; marker
molecule
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
, glycolipid - 🧠ANSWER ✔✔lipid with attached carbohydrate; marker molecule
integral (intrinsic) protein - 🧠ANSWER ✔✔protein molecule that penetrates
deeply into the lipid bilayer
peripheral (extrinsic) protein - 🧠ANSWER ✔✔protein molecule attached to either
the inner or outer surface of the lipid bilayer
attachment protein - 🧠ANSWER ✔✔integral protein that allows a cell to attach to
other cells or to extracellular molecules
cadhedrin - 🧠ANSWER ✔✔protein that attaches a cell to other cells
integrin - 🧠ANSWER ✔✔protein that attaches a cell to extracellular molecules
transport protein - 🧠ANSWER ✔✔integral protein that allows ions or molecules to
move from one side of the plasma membrane to the other
channel protein - 🧠ANSWER ✔✔one or more integral proteins arranged so that
they form a tiny channel through the plasma membrane
leak ion (non-gated) channel - 🧠ANSWER ✔✔channel protein that is always open
and responsible for the plasma membrane's permeability to ions when the
membrane is at rest, in charge of balance
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
Chapter 3 2025/2026 Exam Questions
and Correct Answers | New Update
plasma membrane - 🧠ANSWER ✔✔forms the outer boundary of the cell, through
which the cell interacts with its external environment
nucleus - 🧠ANSWER ✔✔directs cell activities, most of which take place in the
cytoplasm; usually located near the center of the cell
organelle - 🧠ANSWER ✔✔specialized structure that performs a specific
function,aka little organs. The number and type of these is related to the specific
structure and function of a cell
intracellular - 🧠ANSWER ✔✔substances inside the cell
extracellular - 🧠ANSWER ✔✔substances outside the cell
membrane potential - 🧠ANSWER ✔✔charge difference across the plasma
membrane resulting from the regulation of ion movement
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,glycocalyx - 🧠ANSWER ✔✔collection of glycolipids, glycoproteins and
carbohydrates on the outer surface of the plasma membrane
phospholipids and cholesterol - 🧠ANSWER ✔✔predominant lipids of the plasma
membrane
lipid bilayer - 🧠ANSWER ✔✔double layer of phospholipid molecules
hydrophilic - 🧠ANSWER ✔✔"water-loving"
hydrophobic - 🧠ANSWER ✔✔"water-fearing"
fluid-mosaic model - 🧠ANSWER ✔✔model suggesting that the plasma membrane
is neither rigid nor static in structure, but is highly flexible and can change its
shape and composition through time
cholesterol - 🧠ANSWER ✔✔limits the movement of phospholipids, providing
stability to the plasma membrane; maintains the fluid nature of the membrane
marker molecule - 🧠ANSWER ✔✔cell surface molecule that allows a cell to
identify other cells or other molecules. They are mostly glycoproteins or
glycolipids
glycoprotein - 🧠ANSWER ✔✔protein with attached carbohydrate; marker
molecule
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
, glycolipid - 🧠ANSWER ✔✔lipid with attached carbohydrate; marker molecule
integral (intrinsic) protein - 🧠ANSWER ✔✔protein molecule that penetrates
deeply into the lipid bilayer
peripheral (extrinsic) protein - 🧠ANSWER ✔✔protein molecule attached to either
the inner or outer surface of the lipid bilayer
attachment protein - 🧠ANSWER ✔✔integral protein that allows a cell to attach to
other cells or to extracellular molecules
cadhedrin - 🧠ANSWER ✔✔protein that attaches a cell to other cells
integrin - 🧠ANSWER ✔✔protein that attaches a cell to extracellular molecules
transport protein - 🧠ANSWER ✔✔integral protein that allows ions or molecules to
move from one side of the plasma membrane to the other
channel protein - 🧠ANSWER ✔✔one or more integral proteins arranged so that
they form a tiny channel through the plasma membrane
leak ion (non-gated) channel - 🧠ANSWER ✔✔channel protein that is always open
and responsible for the plasma membrane's permeability to ions when the
membrane is at rest, in charge of balance
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
