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Which molecule will diffuse faster through a membrane and to what extent? correct answers Diethylurea>Urea; 50x At pH 7, one is more membrane permeable than the other. ethanol or acetic acid correct answers Ethanol, because acetic acid is negative at pH 7 What would happen to the membran...

Aquaporins are a specialized channel for the movement of water molecules through a membrane. What is one of their critical properties? correct answers They allow only water to pass, and use strategically placed Asn residues to prevent proton passage. The biomolecules responsible for facilitating ...

Diagram the FOUR major steps common to signal transduction pathways correct answers 1) BINDING: Extra-cellular signal molecule binds. 2) ACtIVATION: Receptor protein activates. 3) CARRY: Intracellular signaling proteins carry a message. 4) EFFECT: The message reaches the target and causes a...

endoplasmic reticulum correct answers first organelle in secretory pathway cotranslational translocation correct answers one of the ways proteins are imported into the ER, in this way the ribosomes bind to the ER membrane post-translational translocation correct answers one of the ways protein...

Growth vs Proliferation correct answers Tuberous Sclerosis: autosomal dominant genetic disorder characterized by hamartomatous growths (blood vessel tumors) in multiple organs -Deletion of TSC-1 tumor supressor gene -Affected cells are larger than unaltered cells due to the increased growth d...

Chemical signal correct answers Cell signal that allows experience of odor and taste; includes hormonal signaling Physical signal correct answers Cell signal that allows experience of sound, touch, and sight; must be converted into a chemical signal at the level of the receptor General princip...

What is an organelle? correct answers - Membrane enclosed compartments that occupy nearly 1/2 volume of a cell - any of a number of organized or specialized structures within a living cell Name 5 Organelles correct answers - Mitochondria - Rough ER - Smooth + Golgi - Nucleus - Lysosomes - ...

microvilli in small intestine correct answers surface area increased by polymerizing actin filaments cell polarity generated by correct answers cytoskeletal proteins: -microtubules -actin filaments -intermediate filaments muscles correct answers microfilaments -actin bones correct answe...

Diagram the steps common to signal transduction pathways correct answers extracellular signal molecule v receptor protein v intracellular signaling proteins v effector proteins Describe the major classes of signaling molecules and how signal characteristics affect receptor location correct ...

Proto-oncogene correct answers A gene that regulates normal cell division but that can become a cancer-causing oncogene as a result of mutation or recombination Oncogenes correct answers A mutated or defective version of a gene that cause cancer by blocking the normal controls of cell reproductio...

Which of the following is NOT a mechanism used to regulate cyclin-Cdk complexes? Acetylation Inhibitory protein binding Polyubiquitinylation Phosphorylation correct answers Acetylation Both the Anaphase Promoting Complex (APC/C) and the SCF complex help to advance cells through the cell cycle...