Question

5. The structures labeled B in the picture above are called...

a. centromeres
b. centrioles
c. sister chromatids
d. spindles

6. The structurc labeled A in the same diagram above as in question 5 is called the...
a. centromere
b. centriole
c. sister chromatid
d. spindle

Answer 1

The structures labeled B are spindles, structure A is the centromere, and mitotic spindles arise from the centrosome.

Step-by-step explanation:

The structure labeled B in the diagram referenced in question 5 are the spindles, which are microtubules that extend to attach to the chromosomes during cell division. The structure labeled A would be the centromere, which is the part of a chromosome that links sister chromatids. In question 9, the mitotic spindles arise from the centrosome, which serves as a microtubule-organizing center during mitosis.

Answer 2

centromere.

explanation:

the contromere is the structure that joins the two chromatids to make a chromosome.