BIOL 1001 Chapter : Chapter 9 Learning Objectives

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azuremammoth471

15 Mar 2019

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Chapter 9 learning objectives: understand the 3 characteristics of cell division. Equal distribution of dna to opposite ends of the dividing cell. Separation into 2 daughter cells: know the 3 stages of interphase, and what happens during each. During the g1 and g2 phases, the cell grows produces more organelles and cytoplasm. The s phase produces sister chromatids: know the difference between mitosis and cytokinesis, mitosis is the division of the nucleus. Cytokinesis is the division of the cytoplasm (cell: know the relationship between dna, chromosomes, chromatin, and protein. Your genes are made up of dna, your genetic material. Dna with proteins bound to it is called chromatin, and this is what physically makes up your chromosomes: understand sister chromatids, where they are connected, and the process that produces them. Sister chromatids are identical chromosomes that are produced by dna replication in the s-phase cell cycle.

Related Questions

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

Match the term with its correct definition or explanation.

Chromatin

Homologous Chromosomes

Sister chromatids

Diploid

Interphase

S Phase

Synapsis

Crossing Over

Cell Plate

Cleavage Furrow

A. The exchange of genetic material between homologous chromosomes during meiosis I.

B. The pairing or tight association of homologous chromosomes in meiosis I. Results in the formation of a tetrad.

C. Non-identical copies of the same chromosome. Present in all diploid cells, even before replication. These chromosomes are the same length and contain genes for the same characteristics, but may have different alleles for each gene. D.

The period of the cell cycle that includes G1, S phase, and G2. E. A structure that develops during cytokinesis in plants.

F. Condensed chromosomes.

G. An invagination that develops during cytokinesis in animal cells.

H. When an organism has two copies of every chromosome (2n).

I. Two identical copies of a chromosome. These are only present after DNA replication.

J. The phase of the cell cycle when DNA is replicated.

Each chromosome consists of only one centromere, but during certain times in the cell cycle could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 14 chromosomes, answer the following questions:

1. In G2 of interphase how many chromosomes will be found per cell?

2. In G2 of interphase how many DNA molecules will be found per cell?

3. After teleophase I of meiosis how many chromosomes will be found per cell?

4. After teleophase I of meiosis how many DNA molecules will be found per cell?

5. After cytokinesis of mitosis how many chromosomes will be found per cell?

6. After cytokinesis of meiosis II how many DNA molecules will be found per cell?

A. 14

B. 42

C. 28

D. 7

E. 56

BIOL 1001 Chapter : Chapter 9 Learning Objectives

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