Which type of specialised cell contracts and expands to create movement? (can't be a sperm cell, red blood cell, nerve cell, root hair cell, white blood cell or columnar cell)

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

To be or not to be that is da question

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material