Science Quiz / Bio 1a Quiz 3

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Can you name the Bio 1a terms?

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Channel proteins for water in the cell membrane are called
ATP + adenylyl cyclase = _____
Allosteric inhibitors bind to regulatory site to stabilize (active or inactive) conformation of enzyme
The name of catalytic RNA?
Any proteins that are inserted into the membrane are created by what kind of ribosomes
Small non-protein molecules added to an enzyme and required for catalysis
The fluid mosaic model of membrane structure is attributed to these two people
Which of the following can cross the cell membrane? Na+, Mg++, O2, Cl-, H2O, CO2, K+
True or False: carrier proteins have a specific binding site
Do enzymes affect delta G?
Cell membranes rarely do this
Lowering the temperature of a system shifts the boltzmann distribution to the (left/right) and (raises/lowers) the max of the curve
True or False: simple diffusion requires no energy
Proteins in the cell membrane tht can get the signal to change conformation for facilitated diffusion
True or False: the only molecules that inhibit facilitated diffusion are molecules that are similar to the carrier proteins
A peripheral protein on the cytosolic side of the plasma membrane is made by what kind of ribosome?
Name for a chemical signal secreted by signaling cell
Cell membranes can drift in this direction
True or False: plasma membranes in animals never have carbohydrates embedded
Name of sterol in animal cell membranes
Sterols affect membrane fluidity by becoming _____ fluid at low tempatures, and ____ fluid at high temperatures
Name of the movement of large polar or large charged molecules (macromolecules) through cell membrane
Active transport uses these type of proteins (only)
In the Sucrose-H+ pump in plants, what molecule creates the concetration gradient? What molecule creates the electrochemical gradient?
Exergonic reactions have a (positive or negative) delta G?
Enzymes that are made in inactive form, then modified later to produce the active form
Evidence of membrane fluidity is thanks to _____ and Edidin
What kind of microtubules overlap in the middle of the cell to allow for chromosome movement?
Channel proteins create ______ tunnels in the cell membrane
The transport of calcium in the smooth ER of muslce is an example of (primary or secondary) active transport?
Contransport of two molecules in the same direction….in the opposite direction
In one cycle of Na-K ATPase transport, ____ sodiums ____ the cell, and ____ potassiums ____ the cell
Regulation of enzyme with more than 1 subunit and more than 1 active site
Allosteric activators bind to regulatory site to stabilize (active or inactive) conformation of enzyme
If the chemical effect (CE) is less than the electrical effect (EE) in an electrochemical gradient, then there will be a net movement in the direction of the EE or CE?
If the chemical effect (CE) is greater than the electrical effect (EE) in an electrochemical gradient, then there will be a net movement in the direction of the EE or CE?
A protein in the membrane of the lysosome would be created by a (free or bound) ribosome?
Term for an organic, non protein molecule that is required for an enzyme's catalytic power
A high Km indicates a (weak or strong) binding of enzyme and substrate?
The stability of proteins inside the cell membrane is due partly to these two interactions in water
cAMP + phosophodiesterase (with loss of water) =
Lipid only found on cytosolic face of plasma membrane
What kind of structure do enzymes have when they can produce a sigmoid cuirve of reaction rate versus substrate concentration?
What type of vitamnins often function as coenzymes in cellular respiration?
Name of sterol in plant cell membranes
Cellular respiration is a (catabolic or anabolic) pathway?
When are cofactors added to the enzyme?
Cell markers that make membranes bifacial are what kind of macromolecule
True or False: carrier proteins cannot be saturated by substrate
ALL membrane proteins on the outside of the plasma membrane are made from what kind of ribosome?
Movement of what organelle is involved in endo/exocytosis
In cellular respiration, is delta G dependent or independent of pathway?
In the G-protein linked receptor, the binding of GTP makes the receptor (active or inactive)?
A protein with a acovalent anchor to the outside of the plasma membrane would be created by what kind of ribosome?
Cytokinesis in animal cells is primarily due to the (microtubule/microfilament/intermediate fiber) named ______
Process by which small polar and lipid soluble molecules move through cell membrane
Mechanism for primary active transport
Transport proteins and receptor proteins are what kind of integral protein in the membrane?
Facilitated diffusion requires passage across membrane via _____ proteins
True or False: Facilitated diffusion requires the cell to expend energy
Integral proteins in the cell membrane can be 'integrated' in two ways. Name these two ways using 4 words
True or False: Reactions with a positive delta G are not spontaneous
A protein embedded in the outer membrane of a mitochondria is made by what kind of ribosome?
Process by which ions and large polar molecules pass through the cell membrane
Change in free energy of cellular respiration = negative ____ kcal/mol
Type of carrier proteins that have a binding site for facilitated diffusion
To alter the lipid composition of a membrane, a lipid would be made at the ____, transported in ____ to the ____, and finally returned to the plasma membrane via an ________
Term used for fibers of microtubules sliding along each other
What can a cell do to a glucose molecule to ensure that it does not leak through the cell membrane?
What are pH and [H2O] respectively at standard conditions?
In cotransport in plants, the ATP pump transports H+ (down or against) its concentration gradient to transport sucrose (down or against) its concentration gradient
Work done in cells has a negative or positive delta G?
Principle that entails 'side of membrane facing cytosol has always faced cytosol'
Name of protein that is a secondary meseenger on cytoplasmic side of membrane in the G-protein-linked receptor
What is the cost of one cycle of Na-K ATPase active transport?
In the G-protein linked receptor, the binding of GDP makes the receptor (active or inactive)?
For chromosomes to move during mitosis, what kind of proteins walk towards opposite poles of the cell?
In animals, cytokinesis forms a ____ in the middle of a cell that pinches in two to form two daughter cells
Unilateral integral proteins are connected to the cell membrane via what interaction
Mechanism for secondary active transport
Activated G-proteins are found on the _____ side of the memrbane
Term for an enzyme changing shape in response to a subtrate
Secondary structure of transmembrane proteins due to polar peptide linkages
Enzyme that catalyzes phospholipid flip flops
Name for the signaling cell in the immune system
Name of sterol in fungal membranes
Regulation of an enzyme where the first enzyme in a pathway is inhibited by the end product in the metabolic pathway
In plants, vesicles containing cell wall material line up in the middle of the cell during cytokinesis. What structure do these vesicles ultimately form?
Photosynthesis is a (catabolic or anabolic) pathway?
True or False: energy transformation is a function of membrane proteins
Peripheral proteins are attached by what strength of molecular interaction?
Delta G for the hydrolysis of ATP = negative _____ kcal/mol
True or False: Sterols prevent phase transitions in the cell membrane by raising the freezing point and lowering the boiling point
How many molecules are used/regeneratoed per second per cell? (log10 of the actual number)
True or False: it is harder for water and glycerol to cross the cell membrane that it is for non-polar molecules
What kind of side chains would you find on proteins crossing the phospholipid bilayer of membranes?
These molecules can: allow passage across membrane, be receptors or enzymes, allow cells to adhere and communicate

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