A somatic or body cell contains a haploid

number of chromosomes

False

Cells spend most of their lifetime

in interphase

True

Spindles move chromosomes 

during cell division

True

Cancer is a disease characterized by

uncontrolled cell division

True

The information needed by a cell to direct its

activities and to determine its

characteristics is contained in

molecules of deoxyribonucleic acid (DNA)

True

Binary fission is a form of

sexual reproduction in bacteria

False

Genes on chromosomes are the

units of inheritance

True

Human sperm and egg cells

have 23 chromosomes

True

A karyotype is a type of a gene

False

Gametes are diploid so that when 

fertilization occurs, the resulting zygote

will have the characteristic

number of chromosomes for that species

False

A male can produce sperm

with either an X or a Y chromosome

True

Cell division in bacteria and eukaryotes

takes place in precisely the same manner

False

In humans, the male determines

the sex of the child because males have...

 one X and one Y chromosome

 or

two Y chromosomes

one X and one Y chromosome 

Normal human males develop from fertilized

eggs containing which of the following

sex chromosome combinations?

XY

or

XX

XY

The synthesis (S) phase is characterized by

DNA replication

or 

cell division

DNA replication

female:XX ::

female : eggs

 or

male : XY

male : XY

The X and Y chromosomes are called the...

extra chromosomes

or 

sex chromosomes

sex chromosomes

Mitosis is the process by which

microtubules are assembled

or 

the nucleus is divided into two nuclei

the nucleus is divided into two nuclei

The stage of the cell cycle that

occupies most of the cell's life is...

G₁

 or

M

G₁

 The phase of mitosis that is characterized

by the arrangement of all chromosomes

along the equator of the cell is called

metaphase

or

 prophase

metaphase

diploid : somatic cell :: haploid : 

 chromosome

 or

gamete

gamete

cytokinesis in plant cells involves the formation of

replicated chromosomes

 or

a cell plate

a cell plate

Cells that are not dividing remain in the

first growth phase

or 

cytokinesis phase

first growth phase

Mitosis is a process by which

cells grow in size

or 

a cell's nucleus divides

a cell's nucleus divides

Which of the following shows the 

correct sequence of the cell cycle?

S > G₁ > G₂ > M > C

or 

G₁ > S > G₂ > M > C

G₁ > S > G₂ > M > C

The point at which two chromatids are

attached to each other in a 

chromosome is called a 

chloroplast

or 

centromere

centromere

How many chromosomes are in the body

cells of an organism that has a

haploid number of 8?

 12

 or

16

16

Normal cells become cancer cells when

cells continue to divide without passing through G₁

 or

All of the above

All of the above

Binary fission

creates new species

is the process by which bacteria reproduce

is the process by which bacteria reproduce

The diploid number of chromosomes in a human

skin cell is 46. The number of chromosomes

found in a human egg cell is

23

or 

12.5

23