Bio 155 Chapter 9

Front 1

Which of the follow is NOT true concerning mitosis?
A. Plant cells lack centrioles while animal cells do not
B. Both plant and animal cells undergo cytokinesis
C. Mitosis allows growth and increase in size in both plant and animal cells
D. Animal cells form a cell plate during cytokinesis while plant cells do not

Back 1

Animal cells form a cell plate during cytokinesis while plant cells do not

Front 2

Another word that has the same meaning as the word mitosis and refers to division of nucleus is:
A. Cytokinesis
B. Anaphase
C. Apotosis
D. Karyokinesis

Back 2

Karyokinesis

Front 3

The term "nucleoid" is built from the Latin and Greek root word meaning
A. "center" and "outside"
B. "kernel-like"
C. "true-center"
D. "master control"
E. "Control protein"

Back 3

"Kernel-like"

Front 4

The spee dof binary fission used by bacteria is
A. Considerably slower than mitosis of advancedorganisms since bacteria are so primitive
B. Considerably faster than mitosis of advanced organisms
C. Essentially the same speed as mitosis in advanced organisms since the need to build DNA and ne wclle components is the same in both organisms

Back 4

Considerably faster than mitosis of advanced organisms

Front 5

Adults of one sex being formed with a haploid number of chromosomes would mean that
A. A single set of chromosomes is sufficient to code for a functional individual
B. A female coulddetermine the sex of the offpsinr by fertilizing or not feritilizing an egg
C. the males and females are not reually "related" to their mothers considering the proportion of genes held in common
D. All of the choices are true
E. This system in no way differs from reular dipoloid organisms

Back 5

All of the choices are true

Front 6

The term build from the Greek root meaning "twofold" and "like" is
A. Haploid
B. Diploid
C. Chromatin
D. Cytokinesis
E. Centromere

Back 6

Diploid

Front 7

The term built from the Freek root word meaning "center" and "body" is
A. Nucleoid
B. Chromosome
C. Centrosome
D. Cytokinesis
E. Centromere

Back 7

Centrosome

Front 8

The number of chromosomes vary between organisms. Given this, then
A. There must be no relationship between amount of genetic information and complexity of the organism
B. The number of genes per chromosome may vary among organisms, preventing a simple relationship between the chromosome number and complexity
C. Birds and insects probably cannot follow the same miotic laws as other organisms
D. All of the choices are correct

Back 8

The number of genes per chromosome may vary among organisms, preventing a simple relationship between the chromosome number and complexity

Front 9

The haploid (n)number of chromosomes for humans is
A. 23
B. 24
C. 44
D.46
E.48

Back 9

23

Front 10

Which statement is NOT true about mitosis?
A. Mitosis is a process that duplicates and divides the nuclear contents only
B. Mitosis produces two daughter cells thatcontain the same kinds of chromosomes as the parent cell
C. Mitosis uses 2n parent cell to form dauhter cells containing n chromosomes
D. Mitosis is involved in development of a fertilized egg into a multicellular organism

Back 10

Mitosis uses a 2n parent cell to form daughter cells containing n chromosomes

Front 11

At the completion of mitosis
A. The cell has undergone G1, S, and G2 phases
B. Each chromosome is composed of a single chromatid
once more
C. The cell might have not yet undergone cytokinesis
E. All but the G1, S, and G2 phases are correct

Back 11

All of the above except G1, S, G2

Front 12

The critical check points that control the cell cycle are at the
A. G1, to D stage and G2 to M stage
B. S to G2 stage and G2 to M stage
C. M to G1 stafe and G2 to M stage
D. M to G1 stage and S to G2 stage
E. S to G2 stage and G2 to M stage

Back 12

G1, to S stage and G2 to M stage

Front 13

Which sequence of stages in mitosis is correct?
A. Prophase, anaphase, prometaphase, metaphase, telophase
B. Prophase telophase, anaphase, prometaphase, metaphase
C. Prophase, prometaphase, metaphase, anaphase, telophase
D. Telophase, anaphase, prophase, prometaphase, metaphase
E. Anaphase, peometaphase, metaphase, prophase, telophase

Back 13

Prophase, prometaphase, metaphase, anaphase, telophase

Front 14

Which occurs in metaphase?
A. Centrioles move to the opposite poles
B. Chromosomes line up along the equator of the dividing cell
C. Chromosomes move to opposite poles
D. The nuclear envelope disappears

Back 14

Chromosomes line up along the equator of the dividing cell

Front 15

Which does NOT occur in telophase?
A. Cytokinesis is under way
B. The nuclear envelope is being constructed
C. The centromeres split apart
D. Chromosomes de-condense into chromatin
E. The nucleolus reforms

Back 15

The centromeres split apart

Front 16

Cytokinesis in plant cells differ from this process in animal cells because
A. The plant endoplasmic reticulum forms a cell place
D. Microtubules are laid down in a plywood-like cell plate pattern
C. The golgi appartatus produces vesicles that migrate along the microtubules and fuse become a cell plate
D. Asters coalesce to form a fibrous plate that reinforces with cellulose
E. The inner plasma membrane divides by cytokinesis as in animal cells and then secretes a cellulose cell wall

Back 16

The golgi appartatus produces vesicles that migrate along the microtubules and fuse become a cell plate

Front 17

Which of the following is not true about cancer cells?
A. They never full differentiate
B. They exhibit contact inhibition
C. They exhibit uncontrolled growth
D. They exhibit disorganized growth
E. They may undergo metastasis

Back 17

They exhibit contact inhibition

Front 18

Which is NOT correctly associated with cancer?
A. Angiogenesis forms new blood vessels and brings nutrients and oxygen to the tumor
B. The disorganized mass of cells is encapsulated and does not invade adjacent tissue
C. Metastasus establishes new tumors distant from the side of the primary tumor

Back 18

The disorganized mass of cells is encapsulated and does not invade adjacent tissue

Front 19

sTAGES OF THE CELL CYCLE INCLUDE
a. iNTERPHASE
b. mITOSIS
c. cYTOKINESIS
d. All of the above

Back 19

All of the above

Front 20

Which process sets the length of time for the cell cycle to occur in eukaryotic cells?
A. Mitosis, more specifically the length of prophase
B. Cytokinesis
C. Interphase
D. None of the choices are correct

Back 20

Interphase

Front 21

The balance between stimulatory signals and inhibitory signals determines whether
A. A cell is normal or malignant
B. A cell conducts normal metabolism
C. Proto-ongogenes are active
D. Tumor-suppressor genes are active
E. Bith proto-oncogenes and tumor-suppressor genes are active

Back 21

Both proto-oncogenes nd tumor-suppressor genes are active

Front 22

Cloning can only be carried out using adult stem cells.
True or Flase

Back 22

False

Front 23

Viruses an dchemical exposure can cause mutations in proto-oncogenes which can lead to cancer
True or false?

Back 23

True

Front 24

The haploid (n) or number of chromosomes is found in nearly all cells of humans and most other animals
True or false?

Back 24

True

Front 25

Cell division in eukaryotes involves two seperate processes called mitosis and cytokinesis
True or false

Back 25

True