Biology question? please help 5questions?

Question

in what phase of cell reproduction do the chromosomes duplicate?

a. prophase

b. interphase

c. metaphase

d. telophase

when do nuclear envelopes reassemble around two daughter cells

a. cytokinesis

b. phrophase

c. interphase

d. methaphase

which is not a feature of cancerous tumor?

a. loss of cell division

b. loss of specialization

c. breaking away of cells that travel to new locations

d. normal, programmed cell apoptosis

what is the name of type of cell that comes first in the process of cell

a. diffeerentiated cell

b. progenitor

c. stem cell

d. fibroblast

what is the difference between a benign tumor and cancerous tumor?

a cancerous tumors metastasize, while benign tumors do not

b. bening tumors metastasize while cancerous tumors are always immediately life threathening

d. cancerous tumors alwyas require surgery, while benign tumors do not.

Answer 1

1.B

- interphase has a stage called S phase ( synthesis of DNA). There is duplication of chromosomes.

2.A

- coz during cytokinesis the cleavage furrow developes and the cells start to split into two.

3. B

- benign/malignant tumours and cancer cells are caused by uncontrolled mitosis

4. Sorry, i dunno.

5. Cancer is a class of diseases  characterised by malignant tumours. malignant tissues can move and grow thus invade the other body parts via the movement in the bloodstream. therefore the moving process is called METASTASIS. SO, THE ANSWER IS A, definitely

Answer 2

1. it is a coz in prophase chromosomes divide into two sister chromatids joined by a centromere

2. it is d metaphase coz in this furrow formation is there n  nuclear envelope reappears

3.either b or c coz in cancer excessive division of cell takes place

4.srry i m not sure abt it

5.it is d