Animals plants and other photosynthesizing organisms play important roles in the nitrogen cycle
Answer:
B) cAMP
Explanation:
Phosphodiesterase is an enzyme that breaks a phosphodiester bond, for example in molecules such as cAMP and cGMP. So, phosphodiestarases are are regulators of signal transduction: regulate the duration of signaling pathway.
Caffeine is central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.
Answer:
Mitosis involves in cell division.
Explanation:
Mitosis may be defined as a process of cell division which results in the formation of two daughter cells each from a parent cell and each cell having having the same number of chromosomes and chromosomes of the same type as that of the parent nucleus.
The main difference between meiosis and mitosis of a nucleus cell is that it involves only one cell division. And so the cell goes by the steps of prophase, then metaphase, then anaphase and finally telophase. The specialized cells could not survive independently to each other, so they have to develop some complex system of communications like the circulatory system and the nervous system. In this way they can survive. If one of the system dies, entire organisms is more likely to follow.
Answer:
The correct answer is "True".
Explanation:
The zebra mussel is a small animal that lives near freshwater zones, just like the ones present at the Hudson River of New York. In this place is where zebra mussel was first detected in May 1991. However, it had been traced that zebra mussel is originally native to the Black and Caspian Seas of Asia. It is believed that zebra mussel arrived to New York in the mid-1980s in the ballast water of ocean-going ships that came from Europe.
