Chemotaxis
________ is movement in response to chemicals.
G1
________ and G2- During these stages, the cell performs metabolic reactions and produces organelles, proteins, and enzymes.
Catalytic
________ (enzyme- linked) receptors have an enzymatic active site on the cytoplasmic side of the membrane.
blood glucose levels
Your ________ are regulated by insulin and glucagon, two hormones released from your pancreas.
Cancer
________ occurs when normal cells start behaving and growing very abnormally and spread to other parts of the body.
asexual reproduction
The impetus to divide occurs because an organism needs to grow, a tissue needs repair, or ________ must take place.
G
________ stands for "gap, "but we can also associate it with "growth ..
prophase
During ________, the nuclear envelope disappears and chromosomes condense.
cellular division
Mitosis, or ________, occurs in four stages:
DNA
When damaged ________ is found, checkpoints are activated and cell cycle progression stops.
single chromosome
During interphase, every ________ in the nucleus is duplicated.
G protein
A(n) ________- linked receptor does not act as an enzyme, but instead will bind a different version of a(n) ________ (often GTP or GDP) on the intracellular side when a ligand is bound extracellularly.
centromere
The chromatids are held together by a structure called the ________.
telophase
The process of cytokinesis, which occurs during ________, ends mitosis, as the cytoplasm and plasma membranes pinch to form two distinct, identical daughter cells.
genes
Mutated ________ that induce cancer are called oncogenes.
Taxis
________ is the movement of an organism in response to a stimulus and can be positive (toward the stimulus) or negative (away from the stimulus)
CDKs
________ and cyclins were first studied in yeast, unicellular eukaryotic fungi.
end product
The ________ inhibits the process from beginning, thus shutting down the pathway.
Signal transduction
________ is the process by which an external signal is transmitted to the inside of a cell.
Tumour suppressor genes
________ produce proteins that prevent the conversion of normal cells into cancer cells.
Signal transduction cascades
________ are helpful to amplify a signal.
Interphase
________ is the time span from one cell division to another.
receptor
Each ________ binds a particular molecule in a highly specific way.
DNA damage
If the ________ is so extensive that it can not be repaired, the cell can undergo apoptosis, or programmed cell death.
ion channels
Ligand- gated ________ in the plasma membrane open or close a(n) ________ upon binding a particular ligand.
positive feedback pathway
A(n) ________ also involves an end product playing a role, but instead of inhibiting the pathway, it further stimulates it.
Plasma membrane receptors
________ form an important class of integral membrane proteins that transmit signals from the extracellular space into the cytoplasm.
cell cycle
The ________ is divided into two periods: interphase and mitosis.
Telophase
________ terminates mitosis, and the two new nuclei form.
Taxes
________ are innate behavioral responses, or instincts.
The cell cycle is divided into two periods
interphase and mitosis
The Three Stages of Interphase Interphase can be divided into three stages
G1, S, G2
G1 and G2
During these stages, the cell performs metabolic reactions and produces organelles, proteins, and enzymes