The Cell Cycle and Mitosis

Question 1

What are the structures of A and B

Answer 1

A. Centromere

B. Chromatid

Question 2

Chromatin

Answer 2

Substance consisting of DNA and associated proteins

Question 3

Chromosome

Answer 3

Condensed version of chromatin

Question 4

Sister chromatid

Answer 4

One of a pair of identical chromatids, formed during DNA replication

Question 5

Centromere

Answer 5

Region of attachment for two sister chromatids

Question 6

Gene

Answer 6

Segment of DNA that provides the genetic information necessary to build a protein

Question 7

Genome

Answer 7

Entire complement of an organism’s DNA (includes all the genes in all the chromosomes)

Question 8

Prophase

Answer 8

Chromosomes condense and nuclear envelope breaks down. Spindles fibers grow from centrioloes. Centrioloes migrate to opposite poles of cell.

Question 9

Metaphase

Answer 9

Chromosomes lie along midline of cell. Some spindle fibers attach to kinetochres. Ribers of aster attach to plasma membrane.

Question 10

Anaphase

Answer 10

Centromeres divide in two. Spindle fibers pull sister chromatids to opposite poles of cell. Each pole (future daughter cell ) now has an identical set of genes

Question 11

Telophase

Answer 11

Chromosomes gather at each pole of cell. Chromatin decondeses. Nuclear envelope appears at each pole. New nucleoli appear in each nucleus. Mitotic spindle vanishes