chapter 5a quiz

The region that holds sister chromatids together is called the

Multiple Choice

centromere.

centrosome

centriole.

kinetochores.

spindle fibers.

centromere

Following a cut or scrape, which process repairs your skin?

Multiple Choice

meiosis

synapsis

mitosis

crossing over

fertilization

mitosis

Which of the following is the correct sequence for the cell cycle?

Multiple Choice

S-M-G1-G2

S-M-G2-G1

S-G1-G1-M

G-S-G2-M

S-G1-M-G2

G-S-G2-M

During which stage of the cell cycle do the chromosomes duplicate?

Multiple Choice

prophase

anaphase

interphase

telophase

mitosis

interphase

Which of the following proteins would you expect to be a coded for by a proto-oncogene?

Multiple Choice

a growth factor receptor

a DNA repair protein

a protein involved with the G1 checkpoint

an enzyme involved with apoptosis

a DNA replication protein

a growth factor receptor

Hormones that deliver a signal to the plasma membrane of target cells are known as

Multiple Choice

cyclins.

internal and external signals.

growth factors.

checkpoints.

proto-oncogenes.

growth factors

In humans, the diploid number of chromosomes is

Multiple Choice

20.

46.

23.

variable depending on whether male or female.

92.

46

If the total number of chromosomes in a cell is six, then after mitosis there will be

Multiple Choice

six chromosomes in each daughter cell.

three chromosomes in each daughter cell.

12 chromosomes in each daughter cell.

two chromosomes in each daughter cell.

three chromosomes in one daughter cell and six chromosomes in the other cell.

six chromosomes in each daughter cell

Which sequence of stages in mitosis is correct?

Multiple Choice

prophase, metaphase, interphase, telophase, prometaphase

metaphase, anaphase, prophase, prometaphase, telophase

anaphase, prometaphase, interphase, telophase, prophase

prophase, prometaphase, metaphase, anaphase, telophase

prometaphase, interphase, metaphase, prophase, anaphase

prophase, prometaphase, metaphase, anaphase, telophase

The nuclear membrane reappears in mitosis during

Multiple Choice

interphase.

prophase.

metaphase.

anaphase.

telophase

telophase

You are examining a cell under the microscope that is undergoing cell division and cannot find any asters. What else would be absent in this cell?

Multiple Choice

a cell plate

centrosomes

a spindle

a cleavage furrow

chromosomes

a cleavage furrow

In which stage of mitosis do the chromosomes line up in the center of the cell?

Multiple Choice

interphase

prophase

metaphase

anaphase

telophase

metaphase

During which phases of mitosis do the chromosomes look like Xs?

Multiple Choice

prophase, anaphase

anaphase, metaphase

metaphase, telophase

prophase, metaphase

anaphase, telophase

prophase, metaphase

Which of the following is an accurate statement regarding apoptosis?

Multiple Choice

Apoptosis is also known as programmed cell death.

Apoptosis functions to increase the number of cells in an organism.

Apoptosis only functions during development.

Apoptosis occurs in plants but not animals.

Apoptosis causes cancer.

Apoptosis is also known as programmed cell death.

The process of mitosis includes

Multiple Choice

nuclear division only.

nuclear division and cytoplasmic division.

cytoplasmic division only.

nuclear division, cytoplasmic division and interphase.

interphase only.

nuclear division only.