Description : The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as (a) microtubules (b) microfilaments (c) intermediate filaments (d) lamins.
Last Answer : (b) microfilaments
Description : Endoskeleton of a cell is made up of (A) Microtubules (B) Microfilaments (C) Intermediate filaments (D) All of these
Last Answer : (D) All of these
Description : The following points about microfilaments are true except (A) They form cytoskeleton with microtubules (B) They provide support and shape (C) They form intracellular conducting channels (D) They are involved in muscle cell contraction
Last Answer : C
Description : Which one is apparato reticolare? (a) Golgi apparatus (b) Endoplasmic reticulum (c) Microfilaments (d) Microtubules
Last Answer : (a) Golgi apparatus
Description : What is the function of proteins like microtubules and actin filaments?
Last Answer : Give structure to cells.
Description : When were microfilaments discovered? -Biology
Last Answer : answer:
Description : Difference between microfilaments and intermediate filaments? -Biology
Description : A mouse cell is treated with a chemical that interferes with the activity of microfilaments. Which of the following will probably be affected the most
Last Answer : A mouse cell is treated with a chemical that interferes with the activity of ... Chromosome duplication D. Pairing of homologous chrmosomes
Description : Microfilaments may assist a. in the movement of fibroblasts in heart b. growth of axons c. contraction of all muscle d. all
Last Answer : all
Description : The microfilaments composed of (A) Actin protein (B) Gelatin protein (C) Keratin protein (D) Tubulin protein
Last Answer : (A) Actin protein
Description : which substance are microtubules made ?
Last Answer : In which structures and cellular processes do microtubules participate? Microtubules are made of consecutive dimers of the protein tubulin (each dimer has an alpha and a beta tubulin associated) ... also form the centrioles. Cytoskeleton and Cell Movement - Image Diversity: microtubules tubulin
Description : Which of the following statements concerning platelets is INCORRECT. Platelets: a) contain DNA b) are roughly disk-shaped c) have little ability to synthesize proteins d) are between 1/2 and 1/3 the diameter of the red cell
Last Answer : ANSWER: A -- contain DNA
Description : Which of the following statements regarding cilia is not correct ? (a) Cilia contain an outer ring of nine doublet microtubules surrounding two singlet microtubules. (b) The organised beating of ... (c) Cilia are hair-like cellular appendages. (d) Microtubules of cilia are composed of tubulin
Last Answer : (b) The organised beating of cilia is controlled by fluxes of Ca2+ across the membrane.
Description : By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- ... membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these
Last Answer : all of these
Description : What are the functions of microtubules? -Biology
Description : When do microtubules attach to kinetochores? -Biology
Description : When do microtubules attach to chromosomes? -Biology
Description : What is arrangement of microtubules in middle piece? -Biology
Description : What are microtubules ?
Last Answer : : Microtubules are involved in the division , secretion , intracellular transport and movement of flagella and cilia by the long , long and cylindrical organs present in the cell .
Description : In what phase Microtubules push poles apart to elongate the cell?
Last Answer : Need answer
Description : Vitamin A over dosage causes injury to (A) Mitochondria (B) Microtubules (C) Lysosomes (D) E.R
Last Answer : Answer : C
Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus
Last Answer : Ans. ((a))
Description : The activities of the cytoskeleton is dependent on which of the following types of filaments? a. Microtubules b. Intermediate filaments c. Actin filaments d. None of the above
Last Answer : Answer: a, b, c The cytoskeleton is a collection of filamentous protein structures that allow cells to assume and maintain a variety of shapes, to produce directed movement of ... activities depend upon three main types of filaments: actin filaments, intermediate filaments, and microtubules
Description : What is an analogy for microtubules ?
Last Answer : Microtubules have two main functions in cells and in doing so act like a skeleton as well as like railroadtracks. Microtubules are the main structural component of the cytoskeleton in cells, ... cytoplasm through transport proteins called kinesins and dyneins, which act much like railroad cars.
Description : Which of the following organelles is called 'Atom bombs'? (1) Microtubules (2) Nucleolus (3) Golgi bodies (4) Lysosome
Last Answer : (4) Lysosome Explanation: Lysosomes are known by names such as suicidal bags/ atom bomb and House keeper / scavenger of cell. They are called suicide bags or atom bombs because if the single membrane surrounding the digestive enzyme breaks, the enzymes released may also destroy the cell itself.
Description : Which of the following organelle lack membrane? (a) Mitochondria (b) Ribosomes (c) Microtubules(d) Peroxisomes
Last Answer : (b) Ribosomes
Description : Microtubules are absent in (a) mitochondria (b) flagella (c) spindle fibres (d) centrioles.
Last Answer : (a) mitochondria
Description : Nuclear envelope is a derivative of (a) microtubules (b) rough endoplasmic reticulum (c) smooth endoplasmic reticulum (d) membrane of Golgi complex.
Last Answer : (b) rough endoplasmic reticulum
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 : Primary differences between cilia and flagella are A- arrangement of microtubules B- length and location of basal bodies C- how the microtubules are fused to each other D- number, length and direction of force
Last Answer : number, length and direction of force
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
Description : The following cytotoxic drug acts by inhibiting depolymerization of tubulin and thus producing abnormal arrays of microtubules: A. Paclitaxel B. Vinblastine C. Etoposide D. Mitoxantrone (p. 774) 60.9 C 60.10 B 60.11 D 60.12 A Ai
Last Answer : A. Paclitaxel
Description : Vinca alkaloids exert antitumor activity by: A. Activating topoisomerase II to cause breaks in DNA strands B. Crosslinking DNA strands C. Inhibiting DNA mediated RNA synthesis D. Inhibiting polymerization of tubulin to form intracellular microtubules
Last Answer : D. Inhibiting polymerization of tubulin to form intracellular microtubules
Description : The most probable mechanism of action of mebendazole is: A. Depolarization of membrane and spastic paralysis of the worm B. Hyperpolarization of membrane and flaccid paralysis of the worm C. Loss of ... inhibition of glucose uptake in the worm D. Tegument damage and leakage of contents of the worm
Last Answer : C. Loss of intracellular microtubules and inhibition of glucose uptake in the worm
Description : The polyene antibiotics act by: A. Inhibiting fungal cytochrome P450 enzyme B. Binding to ergosterol and creating micropores in fungal cell membrane C. Inhibiting fungal DNA synthesis D. Disorienting microtubules in fungal cells
Last Answer : B. Binding to ergosterol and creating micropores in fungal cell membrane
Description : Which of the following are regularly assembled and disassembled during cell cycle. (A) Microtubules (B) Intermediate filaments (C) Both A and B (D) None of these
Last Answer : (A) Microtubules
Description : Microtubules consist of helically stacked molecules of the protein (A) Actin (B) Myosin (C) Keratin (D) Tubulin
Last Answer : (D) Tubulin
Description : Cilia are distinguished from flagella (pronounced: fla-JEL-a) by their: a) arrangement of microtubules. b) length and number. c) function. d) color.
Last Answer : ANSWER: B -- LENGTH AND NUMBER.
Description : Which of the following organelles is called ‘Atom bombs’ ? (1) Microtubules (2) Nucleolus (3) Golgi bodies (4) Lysosome
Last Answer : Lysosome
Description : While playing with a metal washer shaped like a ring, Dave accidently pushed it on his finger too far and couldn't get it off. Trying to remove it using soap and water didn't work. The hospital ... and suggested an easy way to remove the washer in just a few minutes. What was his solution? -Riddles
Last Answer : Bob suggested that Dave hold his finger in the air while someone wound a piece of string tightly around his finger just above the metal ring. The string forced the swelling down. As they ... the ring up. They continued winding and unwinding the string until the ring could be easily removed.
Description : The C shaped ring of trachea and bronchi are made of
Last Answer : cartilage.
Description : The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these
Last Answer : c) make the magnetic field radial