Science Quiz / Biology Exam 2-14

Random Science or Biology Quiz

Can you name the Biology Exam 2-14?

Quiz not verified by Sporcle

Forced Order
Also try: 'E' Natural World
Challenge
Share
Tweet
Embed
Score 0/125 Timer 20:00
HintAnswer
The intergral membrane proteins and glycolipids have sugars attached and are projected into the extracellular space, the sugar boundary is called _____
The gycolcalyx is part of the _____ plasma membrane
The gylcocalyx helps _______ cell-cell interactions
The glycocalyx functions to cell ______ interactions
The glycalyx provides _______ prtoection for the cell
The glycocalyx acts a a ______ for stuff moving toward the plasma membrane
The glycocalyx binds _______ factors that act on the cell, act as receptors
The basement membrane is an Extracelluar matrix provides a means of binding ____ together and a _______ role that helps maintain the shape and activities of the cell
The basement membrane provides _________ support for attached cells
The basement membrane provides ______ to maintain cell survial
The basement membrane is a ______ for cell migration
The basement membrane seperates _____ within an organ
The basement membrane acts as a ______ to the passage of macromolecules
Most macromolecules of the ECM are _______ proteins
The molecules that make up the ECM act as trail markers, _______, wire, _____
________ is made in the cell and then transported out and is the scaffolding
Collagens are fibrous proteins only found in the _____
The glycoprotein ______ has very high tensile strength and is the most abundant protein in the human body
Collagen is made up of ______, but also muscle and epithelial cells
All collagen has _____ of three polypeptides, each termed as an _____ chain.
All collagen are intertwined to form a rod-like ______ helix
Where mixtures of collagens are found ina single triple helix it is called a ______ trimer
The indivudual chains of collagen contain large amounts of _____ and _____
after collage is made, the proline and lysine residues are _______ and hydrogen bonds are formed iwth other chains to stabilize the triple helix
For Type I collagen, the triple helix is _____ nanometers long and these trimers are in staggered fashion that overlaps the gaps
In the cornea, the fibers are arranged to optimize structual integrity and _____
Type IV collagen is not a ____ form and is found only in the _______ membrane
Type IV collagen rimers contain non-helical regions and _______ domains at each end of the molecule
Type IV, the non-helical regions allow the molecule to be _______ and the ________ ends interact with each other to form a lattice structure
________ are found in the basement membrane and in the ECM and consist of a protein core to which chains of _______ are covalently attached
_______ are highly acidic polysaccharides containing two different sugars taht are arranged as A-B-A-B
Proteogylcans are formed by the linkage of their protein cores to another polysaccharie called _______ which is not sulfunated but is a ______
Proteoglycans are highly negative so they binds lots of _____ that bind lots of _____ moleucles
The proteoglycans create a hydrated gel that acts like a cushion and resists crushing of the ____
Fibronectin consists of two very similar but not identical ______ chains bound to each other by two _____ linkages
Fibronectin's have 30 ___ modules along each chain
Fibronectin modules form 5-6 _____ on each polypeptide
Each of the two polypeptides of fibronectin have ______ sites for ECM compontents and aid in forming networks of moleucle and binding sites for _____ on the cell surface
One of the modules contains the amino acid sequence, arg-gly-asp which binds to cell surface receptors called ______, a heterodimer foundon almost all cells
arg-gly-asp is equal to ____
Fibronectin acts as a very specific in _____ to the substratum
Laminins are a family of extracellular glycoproteins made up of 3 different polypetide chains bound by ______ linkages
HintAnswer
_____ different laminins have been identified
Laminins affect _______, growth, and differentiation of____
______ form pathways like fibronectin
Laminins can bind to _____ molecules and proteoglycans
Laminin and _______ can form seperate but interconnected networks
Laminin is a _____ made up of alpha, ____, gamma chain
Integrins consist of an ____ and beta chains and are only found in___-
There are 18 different alpha chains and ___ different beta chains, making ___ combinations functional
In inactive state, ______ appear to be bent
Integrins to become activated, signals frm within the cell causes a conformational chane in the cytoplasmic ____ and this transmists a confomrational change to the extracellular __
Because the signal for integrins originates inside the cell, it is called an _______ signal
Integrins tails close together means _____
____ binds to cytoplasmic tails
If integrins are activated they aggregate in clusters in the plasma membrane, bringing lots of ______ molecules in contact with ECM
Integrins are important for ______ of cells to substratum and transmission of _______to inside of cell
Binding of molecules for outside-in signaling results in cytoplasmic tails activating other molecule in cytoplasm like ______ and phosphatases
Integrins are important for maintaining ______ inhibtion
As with fibronectin, laminin and proteoglycans, extracellular proteins that have the ____ module bind to integrins
Platelets express _____ that bind to fibrinogen, a protein in the blood that coverts to fibrin which strengthens the clot.
Fibrinogen has the _________ module.
A drug used for blood clots competes to bind to the arg-gly-asp module and competes for the binding of ________
________ are the anchors that hold integrins in place
When attachment is not unifrom but in seperate points it is called ____adhesion
Points of focal adhesion represent where a cluster of _____ are found
The tails of the integrin subunits bound to actin filaments by _____ proteins
Focal adhesion is also involved in cell ______
In hemidesmosome, associated with epithelial ells, on the cytoplasmic side there are numerous ______ that are bound to the plasma membrane
Filamens to the hemidesmosome are made of ______
The keratin-containing filaments are bound to the plasma membrane by a plaque contiang the protein, _____
Plectin is anchored by integrins and ______
On the outside of cell, integrin and BP180 bind to ______ and collagen
Cell-cell interactions are accomplished by ______, Immunoglobilin superfamily molecules, certain integrins, ______-
Selectins bind to _____ projecting into the extracelluar space from glycoproteins
The binding of selectins to polysaccharides is _______ dependent
Selectins are improtnat _____ cells
Selectins have very short cytoplasmic ___,____ transmembrane domain and modules in the extracelluar strucutre terminating with a ____ domain
_____ are molecules or dominas that bind to to specific oligosaccharides
E-selectins are found on ____ cells
P-selectins are found on ______
L-selectins are found on _______ cells
Immunoglobulin super family is not dependent on _______ for binding
Antibodies are ______
HintAnswer
Immunoglobulins are made of two _____ chains and two _____ chains bound together by ______ bonds
Cadherins are ______ dependent glycoprotiens and are involved in transmitting signals from the ____ to the cytoplasm
_____ bind like cels together
E-cadherins on ______ cells
N-cadherins on _____ cells
P-cadherins on _______ cells
Cadherins have five large extracellular _____ of similar size
Cadherins have a single _______ domain and a small cytoplasmic domain
Cadherins have calcium ions that form bridges between the _________ domains, making the cells tightly held together
Cadherins are expressed as _____
The cytoplasmic domain is often associated with a protien called ______ that anchors the cadherin and transmits signals to the ______
Gap junctions are found in _________ cells and allow two adjacent cells to pass materials from the cytoplasm of one cell into the _____ of anthoer cell
Gap junctions consists if a ______, which is six connexins formed in a circle with a small pore calle dthe _____
Two opposing connexons are bound tightly together by strong ________ bonds
The channel, the ________, to interconnect the cytoplasm of the two cells
The connexons can open and close by altering their confirmations by _______
Things like ATP can get through the hydrophilic annulus - True of False
Plants don't have adhesive molecules but they do have ________
Plasmodesmata connect plant cells, they have channels lined with the __________ with a tube down the middle composed of membranes from the smooth ___________
The annulus of the plasmosdemata can be narrowed or widened by a particualr ________
The cell wall functions to provide _______ for the cells, act as structural elements, protects against infection and is involved in celll _______
The cell wall is composed of fibrous elements embedded in a non-______, ____-like matrix.
The cell wall's fibrous component is cellulose and the matrix is composed of ________ and pectin
The cell wall is organized into rod-like _____ that are about 5nM in diameter and contain 36 c6 molecuels of _______ which are oriented parallel to each other and held together by
The cellulose molecule is synthesized on the extracellualr side of the plasma membrane by the enzyme _________
Cellulose synthase contains six subunits arranged in a ______ formation
Hemicelluose is a branched polysaccharide, with a backbone of one _____ and a side branch of other sugars
Hemicellulose binds to cellulose ______ and cross-links them into a structuralnetwork
Pectins in the matrix are a hetergenous class of _______ charged polysaccharides containing ________ acid
ike GAGs hold large amounts of water forming a hydrated gell that fills in the spaces of the fbirous elements
Proteins in the matrix are essential for _______ and elognation og cell wall. It also functions in cell signaling from cell wall to ________
Tightly held cells are held together by calcium dependent _____ junctions and _____
________ bind cells via extracellular cadherins
For Adherin junctions, tje cytoplasmic domians are linked by _____ and beta _____ to actin filaments of the cytoskleten, which causes tight adhesion and signaling
Desmosomes are dis-shaped ______ junctions
The cadherins in desmosomes are different from those in adherin and care called____________ and _________
For the cytoplasmic side of desmosomes, there are dense plaques that bind looping intermediate filaments forming a rope-like ______
Tight junctions consist of two type of integral membrane proteins like _____ and ______
Tight junctions differ between different cell types with the combination of _____ being the difference in permeability
Tight junctions are extremely importnat to inhibit ____ loss
Cells of te immune system can get through the tight junctions and allow the _______ cells to pass through

You're not logged in!

Compare scores with friends on all Sporcle quizzes.
Sign Up with Email
OR
Log In

You Might Also Like...

Show Comments

Extras

Top Quizzes Today


Score Distribution

Your Account Isn't Verified!

In order to create a playlist on Sporcle, you need to verify the email address you used during registration. Go to your Sporcle Settings to finish the process.