Question

1- Most of a cell's life is spend in this phase of the cell cycle:

--------------------

2- The cell cycle is a highly regulated process.

True

False

3- Cells replicate their DNA during ________________ phase.

                               

G

S

Q

M

4- In animal cells, ________________________ is the indentation of the cell's surface that marks cytokinesis, the final splitting of the membrane, in the process of cell division.

cleavage furrow

binary fission

cell plate

sister chromatids

5- Somatic ("body") cells are _______________ (2n). This means there are two copies of each chromosome.

  

6- During the _______ phase(s) cells perform their everyday functions.

                                                                                                               

S

M

Q

G

7- When chromosomes are duplicated the two strands are called _______________________________ and they are linked together at a point called the ____________________.

sister strands; kinetochore

sister chromatids; centromere

dual chromatids; centromere

genes; chromatid

8- New somatic “body” cells are formed by this process:

                                                                                                          

meiosis

binary fission

replication

mitosis

9- The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.

10- Cells replicate their DNA during ________________ phase.

                               

S

                               

Q

                               

G

M

Answer 1

1) Most of a cell's life is spend in interphase phase of the cell cycle. Interphase is the phase of the cell cycle in which a cell spends most of its life. Cell obtains nutrients and metabolizes them, grows, and conducts their normal functions in this phase.

2) This statement is true.

The cell cycle is a highly regulated process, in which cells grow and die correctly.

3) Cells replicate their DNA during S phase or synthesis phase of interphase during mitosis.

4) In animal cells, cleavage furrow is the indentation of the cell's surface that marks cytokinesis, the final splitting of the membrane, in the process of cell division.

In animals, cell division occurs when a band of cytoskeletal fibers known as the contractile ring, which contracts inward and pinches the cell. The indentation produced as the ring contracts inward is known as the cleavage furrow.