Question

question 20
the cell cycle is disrupted when there is an abnormal increase in the rate of mitosis. an abnormal and uncontrolled increase in the rate of mitosis is frequently associated with an individual developing _
o a into two or more organisms.
o b only one type of somatic cells.
o c a type of cancer.
o d a single set of chromosomes.

question 21
s phase stands for the synthesis or replication of _
o a proteins
o b cytoplasm
o c dna
o d cell organelles

question 22
a single bacterium divides through the process of _ and begins a new population. all the offspring bacteria have identical dna, (which means no genetic diversity)
bacteria...
bacteriaeverywhere!
o a conjugation
o b binary fission
o c mitosis
o d meiosis

Explanation:

Question 20

Cancer is characterized by uncontrolled cell division (mitosis). When mitosis occurs abnormally and uncontrollably, it can lead to the development of cancerous tumors. Option a is incorrect as this is not related to the cell cycle disruption in the context of the question. Option b is wrong because somatic cells are body cells and the problem is about uncontrolled mitosis leading to a specific condition. Option d is about chromosome number and not related to the described cell - cycle disruption.

The S (synthesis) phase of the cell cycle is specifically for DNA replication. Proteins are synthesized in the G1 and G2 phases. Cytoplasm is divided during cytokinesis. Cell organelles are replicated mainly in the G2 phase.

Bacteria divide by binary fission, which is a form of asexual reproduction where one cell divides into two genetically identical cells. Conjugation is a form of genetic transfer between bacteria, not a form of reproduction. Mitosis is for eukaryotic cell division. Meiosis is for the production of gametes in eukaryotes.

Answer:

C. a type of cancer

Question 21