BIOL 1201 Lecture Notes - Lecture 24: Pearson Education, Sister Chromatids, Meiosis

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redwolf687

23 Feb 2016

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Chromosomes can be unreplicated 1 molecule of dna. Chromosomes can be replicated 2 identical molecules of dna, held together. Cell reproduction: when referring to how much dna, it would be doubled. Division of the nucleus: karyokinesis (mitosis, meiosis) Human somatic (body) cells contain between 7 and 14 picograms of dna. G1, s: most likely to be in g1. Human somatic cells contain between 7 and 14 picograms of dna. A cell in metaphase of mitosis will have how many chromosomes and how much. A cell in anaphase f mitosis will have how many chromosomes and how much. Cell plate---formation plant cells many, twice as much. Ploidy refers to the number of sets of chromosomes. Cyclin: a protein that varies in concentration depending on cell cycle. Cdk: cyclin dependent kinase remains in constant concentration. The diploid number of chromosomes for a hours is 64. The haploid number of chromosomes for a hedgehog is 44. Polyploidy: more than 2 sets of chromosomes.

Related Questions

A cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules will be found per cell when this original cell progresses to the following stages?
....G2 of interphase, Metaphase I of meiosis, Prophase of mitosis, Anaphase I of meiosis, Anaphase II of meiosis, Prophase II of meiosis, After cytokinesis following mitosis, and After cytokinesis following meiosis II.

**If you wouldn't mind, please arrange them in chronological order that it happens in the process so it's easier to understand, thanks**

coppercrab413

Part A:

In prokaryotes and eukaryotes cell reproduction is similar in that it requires some kind of signal to proceed, DNA replication, careful separation of the DNA into two equal portions, and division of the cytoplasm. How is cell reproduction different in prokaryotes and eukaryotes?

Select one:

a. In a eukaryotic organism, the signals for cell division are usually not related to the environment but to the function of the entire organism.

b. Eukaryotic cells constantly divide whenever environmental conditions are adequate and the cells are large enough.

c. The linear chromosomes in prokaryotes are constantly being updated.

d. Prokaryotic cell division requires cytokinesis before mitosis because of their small size.

e. The sexual phase of most prokaryotes (bacteria) is essential to the rapid cell division required for infection.

Part B:

What does the name Cyclin Dependent Kinase stand for?

Select one:

a. A protein important to the cell cycle that is dependent on DNA synthesis.

b. An enzyme that cuts DNA so that chromosomes can segregate.

c. An enzyme that phosphorylates other proteins using ATP only when the protein Cyclin is bound to the enzyme.

d. An enzyme that rolls along microtubules dragging a vesicle.

e. An enzyme that connects chromosomes to the spindle fiber.

Part C:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Mitosis can be ordered into the following phases:

Select one:

a. Prophase/Prometaphase/Metaphase/Anaphase/Telophase

b. Anaphase/Prometaphase/Metaphase/Prophase/Telophase

c. Metaphase/Anaphase/Telophase/Prophase/Prometaphase

d. Telophase/Prophase/Prometaphase/Metaphase/Anaphase

e. Anaphase/Telophase/Prophase/Prometaphase/Metaphase

Part D:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Interphase can be ordered into the following phases:

Select one:

a. S/G1/G2

b. G2/G1/S

c. G1/S/G2

d. G2/S/G1

e. G1/G2/S

amethystyak657

you are studying the relationship between chromosomes, chromotids, and number of DNA molecules in the cells of an organism. based on the basic fundamentals of the cell cycle, meosis and mitosis, anwser the following questions?
a. if a cell in anaphase II contains 36 DNA molecules, then a cell in anaphase of mitosis would contain how many chromosomes?
b. if an ovum contains 64 chromosomes, then a cell in anaphase of mitosis would contain how many chromotids?
c. if a cell in the G1 phase contain 12 chromosomes, then a cell in early telophase II would contain how many DNA molecules?
D. if a cell in the G2 phase contains 128ng of DNA, then a second polar body would contain how much DNA?

BIOL 1201 Lecture Notes - Lecture 24: Pearson Education, Sister Chromatids, Meiosis

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