What do you know about enzymes activated by inositol triphosphate? What other information is related to the question?
What will be an ideal response?
A common second messenger is produced from the molecules called inositol phospholipids. These
are inserted into the plasma membrane by their lipid ends and have the inositol phosphate portion
protruding into the cytoplasm. The most common inositol phospholipid is phosphatidylinositol-4,5-
bisphosphate (PIP2). This molecule is a substrate of the effector protein phospholipase C, which cleaves
PIP2 to yield diacylglycerol (DAG) and inositol-1,4,5-trisphosphate (IP3).Both of these compounds then
act as second messengers with a variety of cellular effects. DAG, like cAMP, can activate a protein
kinase, in this case protein kinase C (PKC).
You might also like to view...
Turnover of water in temperate lakes during the spring and fall is made possible by which of the following?
A) warm, less dense water layered at the top B) cold, more dense water layered at the bottom C) a distinct thermocline between less dense, warm water and cold, dense water D) the changes in the density of water as seasonal temperatures change E) currents generated by nektonic animals
Which organism may be mistaken for a lactose fermenter on MacConkey agar because of colonies exhibiting a purple hue on the media?
a. Acinetobacter spp. b. P. luteola c. S. maltophilia d. Bordetella holmesii
Extranuclear genes show a biparental inheritance pattern in yeast since
A) progeny from diploid vegetative growth can have the phenotype of the dominant phenotype. B) progeny from diploid vegetative growth can have the phenotype of the ? parent. C) progeny from diploid vegetative growth can have the phenotype of only the a parent. D) progeny from diploid vegetative growth can have the phenotype of either the a or the ? parent.
Which of the following statements describes Mendel’s law of independent assortment?
a. The inheritance of one characteristic will determine the inheritance of other characteristics. b. The inheritance pattern of one offspring will not affect the characteristics in a sibling. c. Only one characteristic is inherited in each generation. d. The inheritance of one characteristic does not affect the inheritance of another characteristic