Exam 2: BIOS255 / Anatomy & Physiology III Latest Update With Accurate And Verified Questions And Answers 100%/Graded A+

Exam 2: BIOS255 / Anatomy & Physiology III
Latest Update 2025-2026 With Accurate And
Verified Questions And Answers 100%/Graded A+
skeleton is composed of - ANSWERSMicrotubles,
intermediate filaments, microfilaments


Organelles - ANSWERSA tiny cell structure that carries
out a specific function within the cell.


Channel proteins - ANSWERSallow hydrophilic solutes
and water to pass through membrane
some are always open, some are gated


Ligand-gated channels - ANSWERSrespond to chemical
messengers


Voltage-gated channels - ANSWERSrespond to charge
changes

,Mechanically-gated channels - ANSWERSrespond to
physical stress on cell


Carriers - ANSWERSbind solutes and transfer them across
membrane


Cell-identity markers - ANSWERSglycoproteins acting as
identification tags


Cell-adhesion molecules - ANSWERSmechanically link cell
to extracellular material


Chemical first messenger - ANSWERS(epinephrine) binds
to a surface recepto


G protein - ANSWERSrelays signal to adenylate cyclase
which converts ATP to cAMP (second messenger)
cAMP activates cytoplasmic kinases


Kinases - ANSWERSAdd a phosphate group to a molecule

, Glycocalyx - ANSWERSA fuzzy sticky carbohydrate rich
area at the cell surface
unique to everyone except identical twins


Glycocalyx Functions - ANSWERSProtection -
Cell adhesion
Immunity to infection
Fertilization
Defense against cancer -Embryonic development
Transplant compatibility


Microvilli - ANSWERSextensions of the plasma
membrane.
best developed in absorption


cilia - ANSWERSHairlike projections that extend from the
plasma membrane and are used for locomotion