Answer:
Viruses today are not considered living things, since a comparison of archaeobacteria and living things in general cannot have autonomous reproduction methods, if they need to be replicated in a DNA or RNA replication medium foreign to them.
This means that their DNA or RNA cannot replicate by itself, that is why they need to be detected in cells or bacteria (forming bacteriophages) in order to assemble in the DNA of these living beings and replicate in a "hidden" way.
Explanation:
There are cells that recognize the invasion of certain viruses so they self-destruct and do not allow replication of it in the replication of their own DNA, RNA, but there are others that do not, that is why there are viral diseases such as HIV.
On the other hand, in the case of bacteria, they form bacteriophages or form mutations in the DNA, RNA of these living prokaryotic organisms, resulting in more pathogenic or potentially dangerous microorganisms.
Answer:
Pavlov was studying salivation in dogs as part of a research program on digestion.
Explanation:
Ivan Pavlov discovered the concept of conditioning of reflex actions in dog when he was conducting a study on salvation in dogs.
He noticed that the dog (he was experimenting) start salivating as it hears the footstep of assistant that brings food. This made Pavlov to discover conditional stimulus.
Here the conditional stimulus was the sound of foot steps of assistant (as this was associated with the food) and the conditional response was salvation.
In normal cases, food is an unconditioned stimulus that produces unconditional response i.e salvation in dogs.
Hence, the correct statement is
"Pavlov was studying salivation in dogs as part of a research program on digestion."
Once they escape from the main tumor they can grow anywhere in the body.
Although the most common places for secondary tumors to grow are the lungs, liver, lymph nodes, bones, brain and skin.
Answer:
3.Some energy is transferred to the smaller organisms, and the rest is stored in the bodies of larger animals.
Answer:El azúcar es una pentosa, con 5 átomos de carbono que puede ser de dos tipos: ribosa o desoxirribosa, la diferencia entre ambas es que en la desoxirribosa falta un átomo de oxígeno en el carbono 2. El ácido fosfórico se encuentra normalmente ionizado con cargas negativas por lo que es más correcto denominarlo fosfato.
Explanation:
