It means that the species, no matter what kind, are driven by some sort of energy, i.e the sun, soil, water, meat, plants etc. Meaning, that as the number of species are increasing, the food supply is becoming rational.
Answer:
the RRRGENTS
Explanation: The human body does Regulation, Excretion and Synthesis
The nervous system is one of the most important elements for our existence and survival, since it allows the management, organization and functioning of the rest of the corporal systems.
The synapse is a communication mechanism that occurs between two or more neurons in order to massively transmit a nerve impulse in order to coordinate a function in the organism.
The Chemical Synapse is the type of major synapse in our body. In these synapses the information is transmitted chemically, through the sending by the presynaptic neuron of different neurotransmitters that the postsynaptic neuron captures through different receptors, whose action generates an alteration in the form of excitatory or inhibitory postsynaptic potential that may end or not with the generation of an action potencial by the postsynaptic neuron. They are versatile synapses, since some neurons can inhibit the action of others depending on what is activated. There is no physical contact between both neurons.
it is important because they need to survive. as Darwin theory puts it , its not the strongest that survive but the one who is more adaptable to change.
for example. jellyfish have stingers which it uses to slow down its prey
Answer:
It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Explanation:
Lac operon is also referred to as Lactose operon.This operon helps in the transport and metabolism of lactose of many enteric bacteria.
It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Due to the fact that it would be a total waste to produce enzymes when no lactose is available or if another preferable energy source such as glucose were available. The lac operon uses a two-part control mechanism to ensure that the cell uses energy producing the enzymes encoded by the lac operon only when necessary to avoid wastage and abnormalities.