Intermediate filaments lack the intrinsic polarity of microtubules and microfilaments, because IF tetrameric subunits are symmetric. are grouped into five cytoplasmic classes based on the cell types in which they are found and one nuclear class. are the most stable and least soluble cytoskeleton filaments. are not found in plant cell cytoplasm. All of the above are true.

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Select the correct answer from each drop-down menu. which phase of mitotic division is the highlighted cell undergoing? the cell is undergoing , which is the stage before .

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.