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 : Spindle fibre unite with which structure of chromosomes? (a) Chromocentre (b) Chromomere (c) Kinetochore (d) Centriole
Last Answer : c) Kinetochore
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 : 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.
Description : An octamer of 4 histones complexed with DNA forms (a) endosome (b) nucleosome (c) mesosome (d) centromere.
Last Answer : (b) nucleosome
Description : Which one of the following statements about the particular entity is true ? (a) Centromere is found in animal cells, which produces aster during cell division. (b) The gene for producing insulin is ... cell. (c) Nucleosome is formed of nucleotides. (d) DNA consists of core of eight histones.
Last Answer : (b) The gene for producing insulin is present in every body cell.
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 : $ Nucleosome is present on the chromosomes. ! A true nucleus is called Eukaryon.
Last Answer : $ Nucleosome is present on the chromosomes. ! A true nucleus is called Eukaryon. A. If both As and R are ... is wrong D. If both As and R are wrong.
Description : The middle piece of the sperm contains (a) proteins (b) mitochondria (c) centriole (d) nucleus.
Last Answer : (b) mitochondria
Description : .Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae? (a) Nucleolus (b) Mitochondrion (c) Centriole (d) Golgi apparatus
Last Answer : (d) Golgi apparatus
Description : $ A cell with actively dividing nucleus is called interphase cell. ! Prokaryotic cells have a true nucleus.
Last Answer : $ A cell with actively dividing nucleus is called interphase cell. ! Prokaryotic cells have a true nucleus. A ... wrong D. If both As and R are wrong.
Description : During meiosis how cycles of nucleus division, DNA replication and division of centromere take place respectively :-
Last Answer : During meiosis how cycles of nucleus division, DNA replication and division of centromere take place respectively :- ... , Two, One D. Two, One, One
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 : Fetal sex can be determined by examining cells from the amniotic fluid by looking for (a) chiasmata (b) kinetochore (c) barr bodies (d) autosomes.
Last Answer : (c) barr bodies
Description : The complex formed by a pair of synapsed homologous chromosomes is called (a) bivalent (b) axoneme (c) equatorial plate (d) kinetochore.
Last Answer : (a) bivalent
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. .
Description : What is the difference between a chromosome and a chromatid?
Last Answer : A: A chromosome is a long, linear structure made up of DNA and protein that carries genetic information, while a chromatid is one of two identical copies of a chromosome that are joined together by a centromere.
Description : What is the difference between a homologous chromosome and a sister chromatid?
Last Answer : A: Homologous chromosomes are pairs of chromosomes that carry the same genes, while sister chromatids are identical copies of a single chromosome that are formed during DNA replication.
Description : What is a sister chromatid? -Biology
Last Answer : answer:
Description : When is a chromosome called a chromatid ?
Last Answer : If the chromosome is divided vertically into two parts except the centromere, each of those two parts is called a chromatid.
Description : At what stage of cell division does each chromatid have a centimeter ?
Last Answer : In the anaphase step of cell division, each chromatid has one centimeter.
Description : What does chromatid mean ?
Last Answer : : In mitosis cell division, after each chromosome splits vertically in the prophase stage, each of them forms two equally shaped thread-like chromatids. At the end of mitosis, complete division of the centromere results in each chromatid offspring becoming a chromosome.
Last Answer : : Chromatids are formed in the prophase step.
Description : Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of chromatid material between non sister chromati
Last Answer : Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of ... D. If both Assertion & Reason are false.
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 : Each chromosome composed of one chromatid in:-
Last Answer : Each chromosome composed of one chromatid in:- A. Anaphase-I B. Anaphase-II C. Metaphae-I D. Metaphase-II
Description : In what phase DNA is visible as sister chromatid?
Last Answer : Need answer
Description : What phase is occurring when chromatids are separate and a visible line forms between sets of chromatid?
Last Answer : Feel Free to Answer
Description : Number of DNA coils over a nucleosome is
Last Answer : Number of DNA coils over a nucleosome is A. `23/4` B. `21/4` C. `13/4` D. `11/4`
Description : Nobody is the name given to (A) Ribosome (B) Microsome (C) Centrosome (D) Nucleosome
Last Answer : Answer : C
Description : Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as (a) polysome (b) polyhedral bodies (c) plastidome (d) nucleosome.
Last Answer : (b) polyhedral bodies
Last Answer : polysome
Description : Nucleosome core is made of (a) H0, H2A, H2B and H3 (b) H1, H2A, H2B, H4 (c) H1, H2A, H2B, H3 and H4 (d) H2A, H2B, H3 and H4.
Last Answer : (d) H2A, H2B, H3 and H4
Description : The association of histone H1 with a nucleosome indicates that (a) DNA replication is occurring (b) the DNA is condensed into a chromatin fibre (c) the DNA double helix is exposed (d) transcription is occurring.
Last Answer : (b) the DNA is condensed into a chromatin fibre
Description : .Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules is (a) endoplasmic reticulum (b) nucleosome (c) lysosome (d) phagosome.
Last Answer : (c) lysosome
Description : Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.
Last Answer : (d) spindle fibres, centrioles and cilia
Description : The association of histone H1 with a nucleosome indicates: (1) DNA replication is occurring. (2) The DNA is condensed into a Chromatin Fibre. (3) The DNA double helix is exposed. (4) Transcription is occurring.
Last Answer : (2) The DNA is condensed into a Chromatin Fibre.
Description : Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as (1) Polysome (2) Polyhedral bodies (3) Plastidome (4) Nucleosome
Last Answer : (1) Polysome
Description : What types of proteins are involved in the packaging and condensing of DNA into tightly wound nucleosome structures of a chromosome?
Last Answer : Histone
Description : What is the function of the centriole?
Last Answer : A: The centriole is a cellular organelle that plays a role in cell division, helping to organize the microtubules that form the spindle fibers that separate the chromosomes during mitosis.
Last Answer : A: The centriole is involved in cell division, and helps to organize the microtubules that form the spindle apparatus.
Description : Explain the cartwheel structure of centriole. -Biology
Description : Which cell contains centriole ?
Last Answer : Does the cell contain centrioles ?
Description : What is the function of centriole ?
Last Answer : : The main function of the centriole is to form macrophages during cell division and to facilitate the marginal movement of chromosomes. It also works to create cilia and flagella in cells with cilia and flagella. It also helps to form the tail of the sperm.
Last Answer : : Centriole is usually covered by a transparent granular cytoplasm. It forms ester rays during cell division.
Description : Proximal centriole of sperm is found in
Last Answer : Proximal centriole of sperm is found in A. Head B. Neck C. Middle piece D. Tail.
Description : Assertion : Distal centriole acts as a basal granule . Reason : Distal centriole induces cleavage in egg.
Last Answer : Assertion : Distal centriole acts as a basal granule . Reason : Distal centriole induces cleavage in egg ... D. If both Assertion & Reason are False.
Description : Which of the following part of spermatozoan aries from centriole ?
Last Answer : Which of the following part of spermatozoan aries from centriole ? A. Apical cap B. Head C. Middle piece D. Tail
Description : Match the following and select the correct answer `{:("Centriole",(i)"Infoldings in mitochondria"),("Chlorophyll",(ii)"Thylakoids"),("Cristae",(iii)"N
Last Answer : Match the following and select the correct answer `{:("Centriole",(i)"Infoldings in mitochondria"),("Chlorophyll",(ii)" ... ","(iii)","(i)","(ii)"):}`
Description : What star shaped structure radiates from each centriole during metaphase?