AP Bio Chap. 9

Question 1

DNA Replication

Answer 1

Cell copies all of its DNA before it divides.

Question 2

Interphase

Answer 2

3 Stages, during which a cell increases its mass, roughly doubles the number of its cytoplasmic components and replicates its DNA.

Question 3

G1

Answer 3

gap of cell growth and activity before the onset of DNA replication.

Question 4

S

Answer 4

Time of Synthesis (DNA replication).

Question 5

G2

Answer 5

Second interval gap after DNA replication when the cell prepares for division.

Question 6

Chromosome Number

Answer 6

Sum of all chromosomes in a cell of a given type.

Question 7

Diploid

Answer 7

Chromosome number.

Question 8

Bipolar Spindle

Answer 8

Dynamic network of microtubules form during nuclear division.

Question 9

Prophase

Answer 9

(First stage of mitosis) Chromosomes condense and become visible in micrographs.

Question 10

Metaphase

Answer 10

Aligning of the chromosomes midway between the spindle poles.

Question 11

Anaphase

Answer 11

Interval when sister chromatids of each chromosome separate and move toward opposite spindle poles.

Question 12

Telophase

Answer 12

Two clusters of chromosomes reach the spindle poles. Each cluster consists of the parental complement of chromosomes.

Question 13

Cytokinesis

Answer 13

Process of cytoplasmic division (cell division).

Question 14

Contractile Ring

Answer 14

Band of filaments (anchored to the plasma membrane).

Question 15

Cell Plate

Answer 15

Vesicles and their wall-building contents start to fuse into a disk-shape (in plant cells, instead of cleavage).

Question 16

Growth Factors

Answer 16

Checkpoint gene products called ______ activate genes that stimulate cells to grow and divide.

Question 17

Tumor

Answer 17

Abnormal mass.

Question 18

Neoplasms

Answer 18

Abnormal masses of cells that lost control over how they grow and divide.

Question 19

Cancer

Answer 19

Occurs when the abnormally dividing cells of a malignant neoplasm disrupt body issues, physically and metabolically.