Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.

The formation of a cellular spore derived from the products of mitosis. A cellular spore is a cell form that can be used for dissemination, for survival of adverse conditions because of its heat and dessication resistance, and/or for reproduction.

Any process that increases heat tolerance of a cell in response to high temperatures.

Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.

The specification and formation of anisotropic intracellular organization or cell growth patterns.

Any process which stops, prevents, or reduces the frequency, rate or extent of cAMP-mediated signaling, a series of molecular signals in which a cell uses cyclic AMP to convert an extracellular signal into a response.

Any process which stops, prevents, or reduces the frequency, rate or extent of cAMP-mediated signaling, a series of molecular signals in which a cell uses cyclic AMP to convert an extracellular signal into a response.

Any process that activates or increases the frequency, rate or extent of endocytosis.

Any process that modulates the rate, frequency or extent of the formation, arrangement of constituent parts, or disassembly of the fungal-type cell wall.

Any process that initiates the activity of an inactive GTPase through the replacement of GDP by GTP.

Any process that activates or increases the frequency, rate or extent of mitotic actomyosin contractile ring assembly.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The portion of the budding yeast plasma membrane where a daughter cell will emerge. The yeast marks this spot with bud-site selection proteins before bud emergence occurs. Actin is polarized to this spot just prior to and during bud emergence.

A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

The end of a cellular bud distal to the site of attachment to the mother cell.

The apex of the mating projection in unicellular fungi exposed to mating pheromone; site of polarized growth.

The part of a cell encompassing the cell cortex, the plasma membrane, and any external encapsulating structures.