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BIO 1201 GREGG 2024 UPDATE COMPLETE QUESTIONS AND VERIFIED DETAILED ANSWERS/ STUDY GUIDE GET IT RIGHT $22.49
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BIO 1201 GREGG 2024 UPDATE COMPLETE QUESTIONS AND VERIFIED DETAILED ANSWERS/ STUDY GUIDE GET IT RIGHT

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BIO 1201 GREGG 2024 UPDATE COMPLETE QUESTIONS AND VERIFIED DETAILED ANSWERS/ STUDY GUIDE GET IT RIGHT

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  • June 5, 2024
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  • 2023/2024
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  • Questions & answers

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BIO 1201 GREGG 2024 UPDATE COMPLETE
QUESTIONS AND VERIFIED DETAILED
ANSWERS/ STUDY GUIDE GET IT RIGHT


Plasma membrane - (correct answer) separates the living cell from
it's surroundings, it is selectively permeable, transport proteins are
often responsible for controlling passage across cellular membranes


Fluid mosaic model - (correct answer) the membrane is a mosaic of
protein molecules bobbing in a fluid of bilayer of phospholipids


membranes - (correct answer) held together by weak hydrophobic
interactions, most of the lipids and some proteins can move sideways
within the membrane


peripheral proteins - (correct answer) bound to the surface of the
membrane


integral proteins - (correct answer) penetrate the hydrophobic core
metabolism - (correct answer) totality of an organism's chemical
reactions, chemical reactions occur anytime two or more atoms, ions,
or molecules collide in such a way that they produce a new substance

,metabolic pathway - (correct answer) begins with a specific
molecule and ends with a product, each is catalyzed by a specific
enzyme


energy - (correct answer) the capacity to cause change, can exist in
various forms, some of which can perform work, kinetic, thermal,
potential, chemical


the first law of thermodynamics - (correct answer) energy can be
transferred and transformed




transmembrane proteins - (correct answer) integral proteins that
span across the membrane


Cells recognize each other by - (correct answer) binding to surface
molecules, often carbohydrates, on the plasma membrane


membrane carbohydrates - (correct answer) can be covalently
bonded to lipids (glycolipids) or to proteins (glycoproteins)


selectively permeable - (correct answer) regulates entry and exit of
substances, direct cells molecular traffic

,hydrophobic molecules - (correct answer) dissolve in the lipid
bilayer and pass through the membrane rapidly


hydrophillic molecules - (correct answer) ions and polar molecules
that do not cross the membrane easily


transport proteins - (correct answer) allow passage of hydrophillic
substances across the membrane


carrier proteins - (correct answer) bind to molecules and change
shape to shuttle them across the membrane


diffusion - (correct answer) the tendency for molecules to spread
out evenly into the available space


Cocentration gradient - (correct answer) molecules move from high
to low concentration


passive transport - (correct answer) the movement of substances
across a cell membrane without the use of energy by the cell


osmosis - (correct answer) the diffusion of water across a selectively
permeable membrane

, hypotonic - (correct answer) when comparing two solutions, the
solution with the lesser concentration of solutes


isotonic - (correct answer) when the concentration of two solutions
is the same


hypertonic - (correct answer) when comparing two solutions, the
solution with the greater concentration of solutes


turgid (normal) - (correct answer) plant cell in hypotonic solution


flaccid - (correct answer) isotonic


plasmolyzed - (correct answer) plant cell in hypertonic solution


facillitated diffusion - (correct answer) when transport proteins
make room for larger substances to pass through cell membrane


ion channels - (correct answer) facilitate the diffusion of ions


gated channels - (correct answer) open or close in response to
stimulus

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