Action potentials (i.e. nerve impulses) occur in several types of animal cells<span>, called </span>excitable cells<span>, which include </span>neurons<span>, </span>muscle cells<span>, </span>endocrine<span> cells, and in some </span>plant cells<span>. </span><span>It takes around 40 action potentials for a smell sensation to be reported.</span>
The answer is Arachnids.
Crustaceans, Insects, and Arachnids belong to the phylum Arthropoda.
Of mentioned characteristics, most of the Insects have both wings and antennae. Remember all butterfly, bees, beetles, etc. Crustaceans (crabs, lobsters, shrimp, etc) have antennae, but they have no wings.
Thus, the only group of the mentioned that shows <span>neither wings nor antennae is Arachnids. Arachnids include scorpions, spiders, ticks, etc. and as it is known, these groups have neither </span><span>wings nor antennae.</span>
Answer:
1) About 8.7 million.
2) They are being found everywhere.
Answer:
D. Spindle Fibers
Explanation:
During anaphase, the centromeres of each chromosome split and the mitotic spindle pulls the sister chromatids apart.
<span>Inertia refers
to a body or any physical object’s resistance to a change in motion. This
change in motion includes, speed, direction, or state of rest. Objects that
have moved will keep moving in a straight line at constant velocity. Inertia is
one of the fundamental principles of classical physics, for it describes
motions of objects and how they are affected when forces are applied on them.
Inertia is one of Isaac Newton laws from Philosophia Naturalis Principia
Mathematica. </span>
