From OQ Flashcards
(105 cards)
diffusion described as
movement of particles down an concentration gradient due to internal kinetic energy
any process that moves substances out of the cell
exocytosis
difference in charges across a barrier is called
polarity
a measure of potential difference caused by a polarity
voltage
movement of electrons is called
electrical current
the intracellular fluid, when compared to the extracellular fluid, has
a slightly negative charge
the extracecllular fluid is slightly more positive because
of Na
Name the transmembranous protein that maintains the electromagnetic gradient
Na-K pump
What makes cholesterol in the liver and absorbs fat in the intestine
SER
ions responsible for resting membrane potential
Na and K
the difference in charges across a barrier is called
polarity
Cell structure that is made of microtubules and fibrous proteins
cytoskeleton
what cell structure develops the mitotic spindle fibers
centrioles
these are involved in cellular recognition, help ID the self from the non-self
glycoproteins
The movement of water across a semipermeable membrane is called
osmosis
Fluid pressure is called
Hydrostatic pressure
what do cells do to move water?
pump ions places, and let the water follow
the intracellular fluid when compared to the extracellular fluid has…
more potassium (K)
in the cell, glucose is typically transported via ___
facilitated diffusion
___ are extension of the membrane that can move particles past the cell
Cilia
Which nitrogenous base is not in RNA
Thymine
transcription involves the synthesis of ___ complementary to the ____
synthesis of a strand of mRNA, complementary to a strand of DNA
where is mRNA synthesized?
nucleolus
Nucleolus vs nucleus
Nucleolus: portions of chromosomes that contain DNA and protein
Nucleus: bigger structure that houses the genetic material and directs cellular functions. (nucleolus is inside the nucleus)
