What are the components of the mitotic spindle? What is the source of these components?

What are the components of the mitotic spindle? What is the source of these components?
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•The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis
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Related questions

What are the components of the mitotic spindle?

Description : What are the components of the mitotic spindle?

Last Answer : •The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Description : What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, not proceeding onto the S phase

In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Description : In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Last Answer : •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

List two specific cancer treatments, and tell how each treatment works.

Description : List two specific cancer treatments, and tell how each treatment works.

Last Answer : Chemotherapy: Medication usually formulated chemically, and radiation where radiation is directed in certain doses via electromagnetic waves

What are growth factors?

Description : What are growth factors?

Last Answer : •Some external signals are growth factors, proteins released by certain cells that stimulate other cells to divide

What does MPF trigger? What are some specific activities that it triggers?

Description : What does MPF trigger? What are some specific activities that it triggers?

Last Answer : •MPF (maturation-promoting factor) is a cyclin-Cdk complex that triggers a cell’s passage past the G2 checkpoint into the M phase

The activity of cyclin-dependent kinases (CDks) rises and falls. Why?

Description : The activity of cyclin-dependent kinases (CDks) rises and falls. Why?

Last Answer : •The activity of cyclins and Cdks fluctuates during the cell cycle, molecularly, it either receives a message to go ahead or not to go ahead.

What is a protein kinase?

Description : What is a protein kinase?

Last Answer : The Cell Cycle Clock: Cyclins and Cyclin-Dependent Kinases •Two types of regulatory proteins are involved in cell cycle control: cyclins and cyclin-dependent kinases (Cdks)

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Description : What is the Go phase? Describe this phase.

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, switching into a nondividing state called the G0 phase

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Description : What is a cell cycle checkpoint?

Last Answer : The sequential events of the cell cycle are directed by a distinct cell cycle control system, which is similar to a clock The cell cycle control system is regulated by both internal and ... The clock has specific checkpoints where the cell cycle stops until a go-ahead signal is received

What is a kinetochore?

Description : What is a kinetochore?

Last Answer : •During prometaphase spindle microtubules appear and are kinetochores (somewhat track like) where sister chromatids travel along them to the centriole (astor, opposite pole) region. .

What occurs in meiosis? How is the chromosome number of daughter cells different?

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Last Answer : •Gametes are produced by a variation of cell division called meiosis •Meiosis yields nonidentical daughter cells that have only one set of chromosomes, half as many as the parent cell

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Description : What is mitosis?

Last Answer : •Eukaryotic cell division consists of Mitosis, the division of the nucleus.

Think carefully, now. How many DNA molecules are in each of your somatic cells?

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Last Answer : •In preparation for cell division, DNA is replicated and the chromosomes condense •Each duplicated chromosome has two sister chromatids, which separate during cell division, but a single DNA MOLECULE

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Description : Define chromatin.

Last Answer : •Eukaryotic chromosomes consist of chromatin, a complex of DNA and protein that condenses during cell division

How many chromosomes in a human gamete?

Description : How many chromosomes in a human gamete?

Last Answer : 23

Name the two types of gametes.

Description : Name the two types of gametes.

Last Answer : •Sperm and eggs

What is a gamete?

Description : What is a gamete?

Last Answer : •Gametes (reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells

Name two types of somatic cells in your body.

Description : Name two types of somatic cells in your body.

Last Answer : Brain and liver

How many chromosomes are in a human somatic cell?

Description : How many chromosomes are in a human somatic cell?

Last Answer : •Somatic cells (nonreproductive cells) have two sets of chromosomes

What is the meaning of genome?

Description : What is the meaning of genome?

Last Answer : •All the DNA in a cell constitutes the cell’s genome Compare your genome to that of a prokaryotic cell. •A genome can consist of a single DNA molecule (common in prokaryotic cells) or a number of DNA molecules (common in eukaryotic cells)

What is meant by the cell cycle?

Description : What is meant by the cell cycle?

Last Answer : •The continuity of life is based on the reproduction of cells, or cell division

Which of the following structures will not be common to mitotic cell of a higher plant?(a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Description : Which of the following structures will not be common to mitotic cell of a higher plant? (a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Last Answer : (a) Centriole

Mitotic spindle is mainly composed of which protein? (a) Actin (b) Myosin (c) Actomyosin (d) Myoglobin

Description : Mitotic spindle is mainly composed of which protein? (a) Actin (b) Myosin (c) Actomyosin (d) Myoglobin

Last Answer : c) Actomyosin

what is difference between mitotic and meiotic interphase ? -Biology

Description : what is difference between mitotic and meiotic interphase ? -Biology

Last Answer : answer:

$ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic tympanic cavity of the ear.

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The mitotic division starts as the zygioge moves through the of the oviduct called cleavage.

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A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

Description : A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

Last Answer : A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :- A. 23 B. 46 C. 92 D. 69

How many chromosome shal be present in a diploid cell at mitotic anaphase if its egg cell has the chromosome :-

Description : How many chromosome shal be present in a diploid cell at mitotic anaphase if its egg cell has the chromosome :-

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A cell that is entering the mitotic phase (M-phase) of cell cycle is :-

Description : A cell that is entering the mitotic phase (M-phase) of cell cycle is :-

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When is DNA copied in the mitotic phase?

Description : When is DNA copied in the mitotic phase?

Last Answer : Need answer

In mammalian cell cycle, synthesis of DNA occurs during (A) S phase (B) G1 phase (C) Mitotic Phase (D) G2 phase

Description : In mammalian cell cycle, synthesis of DNA occurs during (A) S phase (B) G1 phase (C) Mitotic Phase (D) G2 phase

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Cleavage divisions differ from normal mitotic divisions in that: (a) There is no nuclear division during cleavage (b) There is no division of cytoplasm during cleavage (c) The division of cytoplasm follows nuclear division (d) There is no period of growth in between divisions

Description : Cleavage divisions differ from normal mitotic divisions in that: (a) There is no nuclear division during cleavage (b) There is no division of cytoplasm during cleavage (c) The division of cytoplasm follows nuclear division (d) There is no period of growth in between divisions

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In grasses what happens in microspore mother cell for the formation of mature pollen grains? (a) One meiotic and two mitotic divisions (b) One meiotic and one mitotic divisions (c) One meiotic division (d) One mitotic division

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Megaspores are produced from the megaspore mother cells after (a) mitotic division (b) formation of thick wall (c) differentiation (d) meiotic division.

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Which is the most common type of embryo sac in angiosperms ? (a) Tetrasporic with one mitotic stage of divisions (b) Monosporic with three sequential mitotic divisions (c) Monosporic with two sequential mitotic divisions (d) Bisporic with two sequential mitotic divisions

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Offsets are produced by (a) meiotic divisions (b) mitotic divisions (c) parthenocarpy (d) parthenogenesis

Description : Offsets are produced by (a) meiotic divisions (b) mitotic divisions (c) parthenocarpy (d) parthenogenesis

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Mitotic anaphase differs from metaphase in possessing (a) same number of chromosomes and same number of chromatids (b) half number of chromosomes and half number of chromatids (c) half number of chromosomes and same number of chromatids (d) same number of chromosomes and half number of chromatids.

Description : Mitotic anaphase differs from metaphase in possessing (a) same number of chromosomes and same number of chromatids (b) half number of chromosomes and half number of chromatids (c) half number of ... and same number of chromatids (d) same number of chromosomes and half number of chromatids.

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How many mitotic divisions are needed for a single cell to make 128 cells? (a) 28 (b) 32 (c) 7 (d) 14

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In the somatic cell cycle (a) in G1 phase DNA content is double the amount of DNA present in the original cell (b) DNA replication takes place in S phase (c) a short interphase is followed by a long mitotic phase (d) G2 phase follows mitotic phase.

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The following antineoplastic drug is a mitotic inhibitor and causes metaphase arrest: A. Busulfan B. Vincristine C. Cytarabine D. Procarbazine

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Last Answer : B. Vincristine

Offsets are produced by (1) Meiotic divisions (2) Mitotic divisions (3) Parthenocarpy (4) Parthenogenesis

Description : Offsets are produced by (1) Meiotic divisions (2) Mitotic divisions (3) Parthenocarpy (4) Parthenogenesis

Last Answer : (2) Mitotic divisions

During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This phase of cell division is known as:

Description : During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This ... as: a) prophase (pron: prO-phase) b) metaphase c) anaphase d) telophase

Last Answer : ANSWER: D -- Telophase

What is the function of the spindle apparatus?

Description : What is the function of the spindle apparatus?

Last Answer : A: The spindle apparatus is responsible for separating the chromosomes during cell division.

Which machine's spindle is used to horizontal work? a.UMC b.VMC c.HMC d.DNC

Description : Which machine's spindle is used to horizontal work? a.UMC b.VMC c.HMC d.DNC

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Maximum spindle speed limitation code in CNC Machine a.G90 b.G91 c.G92 d.G93

Description : Maximum spindle speed limitation code in CNC Machine a.G90 b.G91 c.G92 d.G93

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In CNC Program M03 is refer to…… a.Spindle ON in Clockwise rotation b.Spindle ON in Counter Clockwise rotation c.Spindle OFF in Clockwise rotation d.Spindle OFF in Counter Clockwise rotation

Description : In CNC Program M03 is refer to…… a.Spindle ON in Clockwise rotation b.Spindle ON in Counter Clockwise rotation c.Spindle OFF in Clockwise rotation d.Spindle OFF in Counter Clockwise rotation

Last Answer : a.Spindle ON in Clockwise rotation

Rotation of spindle is designated by one of the following axis: a.a-axis b.b-axis c.c-axis d.none of the mentioned

Description : Rotation of spindle is designated by one of the following axis: a.a-axis b.b-axis c.c-axis d.none of the mentioned

Last Answer : d.none of the mentioned

Match the following: NC code DefinitionP. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation a.P-2, Q-3, R-4, S-1 b.P-3, Q-4, R-1, S-2 c.P-3, Q-4, R-2, S-1 d.P-4, Q-3, R-2, S-1

Description : Match the following: NC code DefinitionP. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation a.P-2, Q-3, R-4, S-1 b.P-3, Q-4, R-1, S-2 c.P-3, Q-4, R-2, S-1 d.P-4, Q-3, R-2, S-1

Last Answer : c.P-3, Q-4, R-2, S-1

Spindle whorls were used to ……………. -Social Science

Description : Spindle whorls were used to ……………. -Social Science

Last Answer : answer: