What structure is pulled upward during swallowing to close the opening between the nasal cavity and pharynx?

What is the next step in muscle contraction after the actin changes shape? (apex)

Brepresent the dominant allele for brown fur, and b represents the allele for white fur. if two rabbits with the genotype bb reproduce, what are the possible phenotypes for their offspring

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei