un animal es como una jirafa o un pez o un perro etc. pero tambien ay animales invertebrados o vertebrados
vertebrados se inifica que tiene un esqueleto interno articulado lo que ucal permite que se puedan mover , ejemplos de animals vertebrados son un pinguino elefante cocodrilo perro etc
invertebrado se inifica que son animales que no tienen colbna vertebral ejemplos son mariposas ,gusanos ,medusas ,caracoles etc
ojala te ayude jjejejej
A controlled experiment is when the experimenter can change one variable in the experiment and completely change the results.
Redi experiment involved a closed jar with rotting meat on the inside. He waited for a few days and found no new forms of life in the jar.
He then did the same experiment, but this time he took the lid off the jar. After those few days he found there were maggots in the rotting meat from flies.
This is a great example of a controlled experiment, because he only had to change one variable to completely change the results. In this case that variable was just removing the lid from the jar.
Redi was trying to prove spontaneous generation with his experiment. Although, it failed.
Spontaneous generation: When life forms from non-livings.
Redi disproved spontaneous generation, but proved biogenesis.
Biogenesis: When life comes from other living beings.
He proved biogenesis because the flies had reproduced when the jar was opened.
When the neuron is at rest, what is primarily responsible for moving potassium ions OUT of the cell?
a concentration gradient
an electrical gradient
both a concentration gradient and an electrical gradient
the sodium-potassium pump
Answer:
a concentration gradient
Explanation:
At rest, the sodium-potassium pumps pump the two potassium ions into the cell for three Na ions moved out of the cell. This creates a higher potassium concentration gradient inside the cell. This concentration gradient moves the K+ out of the cell. Movement of positively charged K+ out of the cells make the inside of the membrane negative with respect to the outside. This is how the negative resting potential is maintained when neurons are nor firing the action potential.
Answer:
Here are some of the differences I find
Explanation:
The red arrows in the diagrams below point to these structures in animal and plant cells.
