Description : Do spindle fibers form in mitosis or meiosis?
Last Answer : Feel Free to Answer
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.
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
Description : What phase is when spindle fibers disappear new nucleus forms at each end of the cell?
Last Answer : Need answer
Description : In what phase spindle fibers attach to sister chromatids?
Description : What organizes spindle fibers?
Last Answer : What is the answer ?
Description : What is the name of the Net-like structure formed by the spindle fibers?
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
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.
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.
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.
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.
Description : In which phase of mitosis are chromosomes lined up on the equator of the spindle?
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
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.
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
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
Description : As mitosis (pron: mie-TOE-sis) begins, the structure in the nucleus that disappears is the: a) spindle b) nucleolus (pron: new-klee-O-lus) c) chromatid (pron: KROME-a-tid) d) centromere (pron: SEN-tro-meer)
Last Answer : ANSWER: B -- NUCLEOLUS
Description : Assertion (A) :Sunlight reaches us without dispersion in the form of white light and not as a component. Reason(R) : Dispersion takes place due to variation of refractive index for different wavelength but in vaccum the speed of ... of A. (c) A is true but R is false. (d) A is false but R is true.
Last Answer : (a) Both A and R are true and R is the correct explanation of A.
Description : Assertion: Several organisms belonging to monera,fungi,algae and bryophytes produces gametes by mitosis. Reason: the plant body of the monera, fungi,a
Last Answer : Assertion: Several organisms belonging to monera,fungi,algae and bryophytes produces gametes by mitosis. ... , fungi,algae and bryophytes is haploid.
Description : Spindle formation takes place during
Last Answer : Ans. Metaphase 1
Description : Paresthesia is the term used to refer to a) abnormal sensations. Abnormal sensations, such as burning, tingling, and numbness, are referred to as paresthesias. b) absence of muscle movement suggesting ... fasciculation. d) absence of muscle tone. A muscle which holds no tone is termed flaccid.
Last Answer : a) abnormal sensations. Abnormal sensations, such as burning, tingling, and numbness, are referred to as paresthesias.
Description : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` DCT is also capacble of selective secretion of hydrogen
Last Answer : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` ... False. D. If both Assertion & Reason are false.
Description : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason `:-` In the alveoli `P_(CO_(2))` is low and `P_(
Last Answer : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason ` ... . D. If both Assertion & Reason are false.
Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce
Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.
Description : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange takes place in meiosis.
Last Answer : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange ... . If both Assertion & Reason are false.
Description : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place during meiosis-II.
Last Answer : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place ... . If both Assertion & Reason are false.
Description : Assertion A.: The minimum self cleansing velocity in the sewer, at least once a day, must be generated. Reason (R): If certain deposition takes place and is not removed, it obstructs free flow and causes further ... correct explanation of A C. A is true but R is false D. A is false but R is true
Last Answer : ANS: A
Description : Assertion : Reptiles can be termed as first true and animals Reason : These are completely independent of water due to the development of internal fer
Last Answer : Assertion : Reptiles can be termed as first true and animals Reason : These are completely independent ... D. If both Assertion and Reason are false.
Description : Can anyone tell m were the actual chromosome multiplication takes place during mitosis... The ncert book mentions only dna -Biology
Last Answer : answer:
Description : In a somatic cell cycle, DNA synthesis takes place in (a) G1 phase (b) prophase of mitosis (c) S-phase (d) G2 phase.
Last Answer : (c) S-phase
Description : Which of the following is true for nucleolus? (a) Larger nucleoli are present in dividing cells. (b) It is a membrane-bound structure. (c) It takes part in spindle formation. (d) It is a site for active ribosomal RNA synthesis.
Last Answer : (d) It is a site for active ribosomal RNA synthesis.
Description : Which of the following is true for nucleolus ? (1) Larger nucleoli are present in dividing cells. (2) It is a membrane-bound structure. (3) It takes part in spindle formation. (4) It is a site for active ribosomal RNA synthesis.
Last Answer : (4) It is a site for active ribosomal RNA synthesis.
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
Description : Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below: (A) Both A and R is true ... explanation of A (C) A is true but R is false (D) A is false but R is true
Last Answer : Answer: Option A
Description : Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.
Last Answer : (d) sieve elements.
Last Answer : d) sieve elements.
Description : Large diameter fibers propagate action potential at a. lower velocities b. higher velocities c. equal velocities d. none of them
Last Answer : higher velocities
Description : Will the cutoff wavelength of uncabled fibers (lcf) generally have a value higher or lower than the cutoff wavelength of cabled fibers (λcc)?
Last Answer : Higher.
Description : When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling. (A) Pool (B) Nucleate (C) Transition (D) Film
Last Answer : (D) Film
Description : The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material. (A) Elastic (B) Ultimate (C) Yielding (D) Breaking
Last Answer : (C) Yielding
Description : Assertion `:` Systolic pressure is higher then diastolic pressure. Reason `:` Arteries contract during systole of heart.
Last Answer : Assertion `:` Systolic pressure is higher then diastolic pressure. Reason `:` Arteries contract during ... D. If both Assertion & Reason are false.
Description : Assertion: Communities that comprise of more species tend to be more stable. Reason: A higher number of species results in less animal variation in to
Last Answer : Assertion: Communities that comprise of more species tend to be more stable. Reason: A higher number ... D. If both assertion and reason are false.
Description : Assertion (A) : In a food chain members of successive higher levels are fewer in number. Reason (R ): Number of organisms at any trophic level depends
Last Answer : Assertion (A) : In a food chain members of successive higher levels are fewer in number. Reason (R ... . D. If both assertion and reason are false.
Description : Assertion :- Water in liquid state is more stable than ice at room temperature. Reason :- Water in liquid from has higher entropy than ice.
Last Answer : Assertion :- Water in liquid state is more stable than ice at room temperature. Reason :- Water in ... . D. If both Assertion & Reason are false.
Description : Assertion: Aptyalism patients have higher than normal incidences of dental caries. Reason: Aptyalism is caused by the action of parasympa- thetic nerv
Last Answer : Assertion: Aptyalism patients have higher than normal incidences of dental caries. Reason: ... the action of parasympa- thetic nervous system
Description : Assertion : Current between two points in an electrical always flows from higher potential to lower potential. Reason : During charging of a battery c
Last Answer : Assertion : Current between two points in an electrical always flows from higher potential to lower ... . If both Assertion and Reason are false.
Description : Assertion (A): The purpose of higher education is to promote critical and creative thinking abilities among students. Reason (R): These abilities ensure job placements. Choose the correct answer from the following code: (A) Both ... A) is true and (R) is false. (D) (A) is false and (R) is true.
Last Answer : (C) (A) is true and (R) is false.
Description : Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology