3. what is the role of the spindle fibers during mitosis? (1 point)
a.)they separate the chromosomes.
b.)they break down the nuclear membrane.
c.)they duplicate the dna.
d.)they make the chromosomes visible.
4. one difference between cell division in plant cells and in animal cells is that plant cells have (1 point)
a.)centrioles.
b.)centromeres.
c.)a cell plate.
d.)chromatin.

3. A. They help separate the chromosomes
Spindle fibers attach to chromosomes and pull them towards different poles of the cell during the final phases of mitosis. The result is two identical cells with the same chromosomes.

4. C. A cell plate
A cell plate is a structure found in plant cells on the top and bottom of the cell. It is a perforated wall made of cellulose and it allows for substances to move in and out of the cell, as the outer most layer of a plant cell, the cell wall, is impermeable.

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.

They became more resistant.