920 cards
DNA methylation ____ the accessibility of chromatin and stops DNA binding proteins from interacting
____ decreases the accessibility of chromatin and stops DNA binding proteins from interacting
DNA methylation decreases the accessibility of chromatin and ____
The ____ contains genes that code for proteins in charge of transporting lactose into the cytosol and digesting it into glucose
The Lac operon contains genes that code for ____ into the cytosol and digesting it into glucose
The Lac operon contains genes that code for proteins in charge of transporting lactose into the ____
The Lac operon is a/an ____ operon
The genes in the lac operon will be expressed if the following two conditions are met : ____
____ binds to the lac repressor and makes it change shape so the repressor detaches from the DNA
Allolactose binds to the ____ and makes it change shape so the repressor detaches from the DNA
Allolactose binds to the lac repressor and makes it ____
This is a/an ____ glycosidic bond.
This is a/an ____ glycosidic bond
The ____ accounts for the presence of lipids, proteins, and carbohydrates in a dynamic, semisolid plasma membrane that surrounds cells
Lipids move freely in the plane of the cell membrane and can assemble into ____
Lipids move ____ in the plane of the cell membrane and can assemble into lipid rafts
A/an ____ is a specific membrane protein that maintains the bidirectional transport of lipids between the layers of the phospholipid bilaye…
Proteins and carbohydrates may move within the membrane, but are slowed by ____
Proteins and carbohydrates may move within the membrane, but are ____ by their relatively large size
Triacylglycerols and fatty acids act as precursors to ____
____ are the same as triacylglycerols except one of the fatty acids is replaced with a phosphate group.
Glycerophospholipids are the same as ____ except one of the fatty acids is replaced with a phosphate group.
Glycerophospholipids are the same as triacylglycerols except ____.
____ contributes to membrane fluidity and stability
Cholesterol contributes to membrane ____
At low temperatures , cholesterol will ____ fluidity
At ____ temperatures , cholesterol will increase fluidity
At high temperatures , cholesterol will ____ fluidity
At temperatures , cholesterol will decrease fluidity
____ in cell membranes provide waterproofing and defense for the cell
Waxes in cell membranes provide ____ and defense for the cell
Waxes in cell membranes provide waterproofing and ____ for the cell
____ are a type of integral protein that spans the entire membrane
Transmembrane proteins are a type of ____
Embedded proteins are embedded in the ____
____ have one or more segments that are embedded in the phospholipid bilayer
Integral proteins have one or more segments that are ____ in the phospholipid bilayer
Carbohydrates in cell membranes can form a protective ____ coat
____ in cell membranes can form a protective glycoprotein coat
Extracellular ligands bind to membrane receptors and ____
____ in cell membranes prevent solutes from leaking into the space between cells via a paracellular route, but do not provide intercellular…
Tight junctions in cell membranes prevent solutes from leaking into ____ route, but do not provide intercellular transport
Tight junctions in cell membranes prevent solutes from leaking into the space between cells via a paracellular route, but do not provide __…
____ in cell membranes allow for rapid exchange of ions and other small molecules between adjacent cells
Gap junctions in cell membranes allow for ____ cells
____ bind adjacent cells by anchoring to their cytoskeletons
Desmosomes bind ____
____ is the pressure that needs to be applied to a solution to prevent the inward flow of water (prevent osmosis)
Osmotic pressure is the pressure that ____
____ is when the molecule moves down its concentration gradient , so no energy is required
Passive transport is when the molecule moves ____, so no energy is required
Simple diffusion is when molecules move passively from an area of ____ concentration until equilibrium is achieved
Simple diffusion is when molecules move ____ from an area of high concentration to an area of low concentration until equilibrium is achiev…
Simple diffusion is when molecules move passively from an area of high concentration to an area of low concentration until ____
____ is a form of passive transport and describes the diffusion of water across a selectively permeable membrane .
Osmosis is a form of ____ transport and describes the diffusion of water across a selectively permeable membrane .
Osmosis is a form of passive transport and describes ____.
____ is a form of passive transport that uses transport proteins to move impermeable solutes across the cell membrane
Facilitated diffusion is a form of ____ transport that uses transport proteins to move impermeable solutes across the cell membrane
____ requires energy in the form of ATP or an existing favorable ion gradient (an ion other than the solute being transported).