Science chapter test on 10/4/13

Question 1

Cell Division

Answer 1

Cell division is the process in which one cell, called the parent cell, divides to form two new cells, referred to as daughter cells

Question 2

Parent Cell

Answer 2

The cell that is dividing in Cell division

Question 3

Daughter Cell

Answer 3

The product of Cell Division

Question 4

Chromosome

Answer 4

A chromosome is a molecule of DNA, and will be the focus of a subsequent concept.

Question 5

Binary Fission

Answer 5

Most prokaryotic cells divide by the process of binary fission.

Question 6

Mitosis

Answer 6

mitosis, a multi-phase process in which the nucleus of the cell divides.

Question 7

Cell Cycle

Answer 7

The cell cycle is a repeating series of events that include growth, DNA synthesis, and cell division.

Question 8

Tumor

Answer 8

a mass of abnormal cells called a tumor

Question 9

Chromatin

Answer 9

During other phases of the cell cycle, DNA is not coiled into chromosomes. Instead, it exists as a grainy material called chromatin.

Question 10

Chromatids

Answer 10

Because DNA has already replicated, each chromosome actually consists of two identical copies. The two copies are called sister chromatids.

Question 11

Centromere

Answer 11

The Chromatids They are attached to one another at a region called the centromere.

Question 12

Genes

Answer 12

The DNA of a chromosome is encoded with genetic instructions for making proteins. These instructions are organized into units called genes.

Question 13

homologous chromosomes

Answer 13

The chromosomes in a pair are known as homologous chromosomes.