chapter 10

Question 1

DNA is copied

Answer 1

in the S phase of interphase

Question 2

A gene

Answer 2

is a sequence of nitrogeneous bases in DNA

Question 3

Sister Chromatids

Answer 3

contain identical DNA information

Question 4

In mitosis, chromosomes line up at the cell mid plane during

Answer 4

Metaphase

Question 5

Cell plate formation occurs

Answer 5

during cytokinesis

Question 6

Cell division in bacteria is called

Answer 6

binary fission

Question 7

In mitosis the nuclear membrane begins to breakdown during

Answer 7

Prophase

Question 8

Meiosis produces

Answer 8

haploid cells

Question 9

each homolog of a pair of homologous chromosomes

Answer 9

carries the same genes but potentially different alleles than its pair

Question 10

Crossing over occurs during

Answer 10

prophase 1

Question 11

Homologs separate during

Answer 11

anaphase 1

Question 12

Genetic variation during sexual reproduction occurs during

Answer 12

crossover and independent assortment

Question 13

Prokaryotic chromosomes are

Answer 13

circular

Question 14

During Mitosis the # of chromosomes

Answer 14

stay the same from beginning to end.

Question 15

During Meiosis the # of chromosomes

Answer 15

cut in half from beginning to end

Question 16

2 identical sister chromatids are

Answer 16

replicated chromosomes

Question 17

Chromosomes

Answer 17

the major carriers of genetic information in eukaryotes and lie within the cell nucleus

Question 18

chromosomes are made up of

Answer 18

chromatin

Question 19

chromatin

Answer 19

a material consisting of DNA and associated proteins.

Question 20

genes

Answer 20

DNA is organized into informational units called:

Question 21

Chromosome packaging is facilitated by certain proteins known as:

Answer 21

histones

Question 22

histones associate with DNA to form structures called:

Answer 22

nucleosomes

Question 23

These function like tiny spools to prevent DNA from becoming tangled

Answer 23

Nucleosomes

Question 24

Scaffolding proteins

Answer 24

non-histone proteins that help maintain chromosome structure

Question 25

a group of proteins required for chromosome compaction

Answer 25

condensin

Question 26

The 1st and longest phase of cell cycle

Answer 26

interphase

Question 27

g phase of interphase

Answer 27

growth and normal metabolism, no DNA synthesis occurs.

Question 28

S phase of interphase

Answer 28

DNA replicates

Question 29

G2 phase of interphase

Answer 29

increased protein synthesis occurs

Question 30

M Phase

Answer 30

mitosis and cytokinesis

Question 31

Mitosis

Answer 31

the nuclear division that produces 2 nuclei containing chromosomes identical to the parental nucleus

Question 32

Cytokinesis

Answer 32

division of cell cytoplasm to form 2 cells