What is Spindle Fiber ?

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Answer :

: In the pro-metaphase phase, a number of fibers appear extending from the north pole to the south pole of the cell. These are spider-shaped, so they are called spindle instruments. The center of the spindle is called the equatorial region. In a cell, astragalus appears as scattered rays from around the centiole, and the fiber that forms the two opposite poles of the cell is called spindle fiber.
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Related questions

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

Last Answer : c.HMC

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

Last Answer : c.G92

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:

Archaeologists have found spindle wheels, made of terracotta and …………………. -Social Science

Description : Archaeologists have found spindle wheels, made of terracotta and …………………. -Social Science

Last Answer : answer:

What are spindle fibres? -Biology

Description : What are spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What is the function of the spindle fibres? -Biology

Description : What is the function of the spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What organelles produce spindle fibres? -Biology

Description : What organelles produce spindle fibres? -Biology

Last Answer : Centrioles produce spindle fibers in animal cells. These spindle fibers are active during mitosis when the DNA has replicated and the chromosomes are pulled apart during anaphase. Plants cells do not have centrioles but they still undergo mitosis.

Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology

Description : Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology

Last Answer : answer:

At what stage of mitosis is the spindle device formed ?

Description : At what stage of mitosis is the spindle device formed ?

Last Answer : Answer : The spindle instrument is formed in the pro-metaphase stage of mitosis.

What is a spindle device ?

Description : What is a spindle device ?

Last Answer : In the promethaphase phase of mitosis cell division, a macula-shaped structure is formed in the cell consisting of a number of fibrous proteins. This is called spindle apparatus .

$ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms.

Description : $ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms.

Last Answer : $ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms. ... D. If both As and R are wrong.

Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, mitosis takes place without spindle fibers.

Description : Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, mitosis takes place without spindle fibers.

Last Answer : Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, ... . D. If both Assertion & Reason are false.

Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Description : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Last Answer : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During ... . D. If both Assertion & Reason are false.

Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Description : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Last Answer : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of ... D. If both Assertion & Reason are false.

At metaphase, chromosmes are attached to the spindle fibres by their

Description : At metaphase, chromosmes are attached to the spindle fibres by their

Last Answer : At metaphase, chromosmes are attached to the spindle fibres by their A. Centromere B. Satellites C. Secondary cnstrictions D. Kinetochores

During cell division, spindle fibers attach to which part of chromosome :-

Description : During cell division, spindle fibers attach to which part of chromosome :-

Last Answer : During cell division, spindle fibers attach to which part of chromosome :- A. Primary constriction B. Sec. Constriction C. Chromomere D. Chromatid

Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles give rise to spindle apparatus durring divi

Description : Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles give rise to spindle apparatus durring divi

Last Answer : Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles ... . If both Assertion & Reason are false.

Part of Chromosome which joins with spindle fibres is -

Description : Part of Chromosome which joins with spindle fibres is -

Last Answer : Part of Chromosome which joins with spindle fibres is - A. Chromatid B. Chromonema C. Chromomere D. Centromere

In which phase of mitosis are chromosomes lined up on the equator of the spindle?

Description : In which phase of mitosis are chromosomes lined up on the equator of the spindle?

Last Answer : Need answer

What phase is when spindle fibers disappear new nucleus forms at each end of the cell?

Description : What phase is when spindle fibers disappear new nucleus forms at each end of the cell?

Last Answer : Need answer

In what phase spindle fibers attach to sister chromatids?

Description : In what phase spindle fibers attach to sister chromatids?

Last Answer : Need answer

Do spindle fibers form in mitosis or meiosis?

Description : Do spindle fibers form in mitosis or meiosis?

Last Answer : Feel Free to Answer

What organizes spindle fibers?

Description : What organizes spindle fibers?

Last Answer : What is the answer ?

In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Description : In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Last Answer : What is the answer ?

What is the name of the Net-like structure formed by the spindle fibers?

Description : What is the name of the Net-like structure formed by the spindle fibers?

Last Answer : Need answer

How one division of the nucleus a new spindle forms around each group of chromosomes?

Description : How one division of the nucleus a new spindle forms around each group of chromosomes?

Last Answer : Need answer

Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Description : Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Last Answer : Ans. ((b))

Pyramid of number in a grassland/true ecosystem is: (a) Always inverted (b) Always upright (c) Both (a) and (b) (d) Spindle-shaped

Description : Pyramid of number in a grassland/true ecosystem is: (a) Always inverted (b) Always upright (c) Both (a) and (b) (d) Spindle-shaped

Last Answer : Ans. ((b))

Spindle formation takes place during

Description : Spindle formation takes place during

Last Answer : Ans. Metaphase 1

Can the cotter joint be used to connect slide spindle and fork of valve mechanism? a) True b) False

Description : Can the cotter joint be used to connect slide spindle and fork of valve mechanism? a) True b) False

Last Answer : a) True

______ is used for a shaft that supports rotating elements like wheels, drums or rope sleaves. a) Spindle b) Axle c) Shaf d) None of the listed

Description : ______ is used for a shaft that supports rotating elements like wheels, drums or rope sleaves. a) Spindle b) Axle c) Shaf d) None of the listed

Last Answer : a) Spindle

______ is used for a shaft that supports rotating elements like wheels, drums or rope sleaves. a) Spindle b) Axle c) Shaf d) None of the listed

Description : ______ is used for a shaft that supports rotating elements like wheels, drums or rope sleaves. a) Spindle b) Axle c) Shaf d) None of the listed

Last Answer : a) Spindle

Pyramid of numbers in a pond ecosystem is (a) irregular (b) inverted (c) upright (d) spindle shaped.

Description : Pyramid of numbers in a pond ecosystem is (a) irregular (b) inverted (c) upright (d) spindle shaped.

Last Answer : (c) upright

Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Last Answer : all above

The tie rod connects the front wheel spindle arms and is actuated by the steering shaft through a) chain link b) gear link c) tension link d) drag link

Description : The tie rod connects the front wheel spindle arms and is actuated by the steering shaft through a) chain link b) gear link c) tension link d) drag link

Last Answer : d) drag link

Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Description : Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Last Answer : (c) two homologous chromosomes

Colchicine is an inhibitory chemical, which (a) stops the functioning of centriole (b) prevents attaching of centromeres with rays (c) prevents the spindle formation in mitosis (d) prevents the formation of equatorial plane.

Description : Colchicine is an inhibitory chemical, which (a) stops the functioning of centriole (b) prevents attaching of centromeres with rays (c) prevents the spindle formation in mitosis (d) prevents the formation of equatorial plane.

Last Answer : (c) prevents the spindle formation in mitosis

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

Spindle fibre unite with which structure of chromosomes? (a) Chromocentre (b) Chromomere (c) Kinetochore (d) Centriole

Description : Spindle fibre unite with which structure of chromosomes? (a) Chromocentre (b) Chromomere (c) Kinetochore (d) Centriole

Last Answer : c) Kinetochore

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

At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Description : At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Last Answer : (c) kinetochores

Select the correct option with respect to mitosis. (a) Chromatids separate but remain in the centre of the cell in anaphase. (b) Chromatids start moving towards opposite poles in telophase. (c) Golgi complex and endoplasmic reticulum are still visible at the end of prophase. (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Description : Select the correct option with respect to mitosis. (a) Chromatids separate but remain in the centre of the cell in anaphase. (b) Chromatids start moving towards opposite poles in telophase. (c ... . (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Last Answer : (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids separate. (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids. (c) Anaphase - Centromeres split and chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Description : A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids ... chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Last Answer : (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids.

During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Description : During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Last Answer : a) kinetochore

Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Last Answer : (b) Synapsis

Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Description : Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Last Answer : (d) kinetochore of the chromosome.