Answer: The correct answer is -
b. Threshold.
Explanation:
Threshold can be described as minimum voltage of a memrane (of neuron or muscle cell) that is required to reach an excited state of cell during a depolarization) so as to produce an action potential.
Voltage-gated channels are activated at the threshold voltage, .
For example - Threshold level of neuron is - 55mV, which means it fires action potential at this level so that information is transferred to another neuron.
Answer:
False.
Explanation:
Classification of organism is important to classify them in similar and different groups. Organisms can be classified on the basis of the development of the mouth or the anus first.
The organism in which mouth develops first by the opening of gastrula are called protostome not deuterostomes. Deuterostome develop anus first from the opening of gastrula.
Thus, the correct answer is option (b).
Answer:
acoustics timbre are other words for sound quality
A phylogenetic tree<u> uses only 1 and 2 </u> whereas a cladogram does not. The group of answer choices includes the dimension of time indicates ancestral-descendant relationships use analogous character traits all of these.
A phylogenetic tree is a bifurcation diagram used to explain scientists' hypotheses about how branching between evolutionary lines occurred.
The most recent common ancestor of two taxa is the node that represents the fork between those taxa. In this case, the letter b represents the turning point between the gorilla and the human.
A phylogenetic tree is a bifurcation diagram showing putative relationships between different species based on similarities and differences in physical and/or genetic characteristics.
Learn more about phylogenetic trees here: brainly.com/question/1378975
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