What is the difference between cytokinesis and karyokinesis? Which process needs to be more precise for accurate cell division?
What will be an ideal response?
Karyokinesis is the equal partitioning of the chromosomal material in the nucleus of the parental cell between the nuclei of the two daughter cells. This process requires first that each of the chromosomes in the nucleus be fully and accurately duplicated and then that the duplicate copies of each chromosome be separated so that one copy goes to the nucleus of one daughter cell and the second copy goes to the other daughter nucleus. Karyokinesis is followed by cytokinesis, the partitioning of the cytoplasmic contents of the parental cell into the daughter cells.
Cytokinesis does not demand the same degree of equivalency required in karyokinesis. The cytoplasm of the parental cell contains an abundance of the proteins and organelles that the daughter cells require in order to function, so the division of this material need not be equal.
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Name a defining characteristic of adaptive immunity
What will be an ideal response?
The carrying capacity of an environment is determined by
a. the net rate of reproduction of the female members. b. an S-shaped curve. c. the predation rate on the females. d. diseases suffered by both sexes. e. the sustainable supply of resources it provides.
The separation of sister chromatids during anaphase I of mitosis is known as chromosome __________
A) cytokinesis B) karyokinesis C) crossing over D) synapsis E) disjunction
Which of these often serve as cell recognition molecules on cell surfaces?
A. peripheral proteins B. transmembrane proteins C. glycoproteins D. integral proteins