Option B.
2,3,4.
Microtubules are made of a protein called tubulin. The cytoplasm consists of several hello cylindrical tubules with the length of 200 to 300 A°. The process an electron density of about 50 to 70 A° thickness. Microtubules carry out the functions like cyclosis which is the streaming movement of cytoplasm which transports small molecules. they are also act as the basic units for the origin of centrioles kinetosomes, cilia and flagella. The microtubules are also concerned with the formation of asters and spindle fibres during cell division.
Centriosomes, basal bodies,spindle bodies facilitate the Rapid nucleation of microtubules inside a cell.
which of the following structures facillitate the rapid nucleation of micro tubules inside a cell 1....
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false? A. The cytoskeleton is made up of three types of protein filaments. B. The cytoskeleton controls the location of organelles in eukaryotic cells. C. Covalent bonds between protein monomers hold together cytoskeletal filaments. D. The cytoskeleton of a cell can change in response to the environment. Reset Selection Question 2 of 8 2.0 Points Which of the following statements about the function of the...
4. Short response (2 sentences max, 6pts each) A. Many yeast species have only one cyclin-dependent kinase (Cdk), which activates protein targets that drive events in multiple phases of the cell cycle. Why doesn't this Cdk activate G1-, S-, G2-, and M-phase proteins all at the same time? B. Please describe how cell death by apoptosis can play a beneficial role in the body's healthy growth. C. For a cell starting in G1, place the following cell cycle events in...
4. Short response (2 sentences max, 6pts each) A. Many yeast species have only one cyclin-dependent kinase (Cdk), which activates protein targets that drive events in multiple phases of the cell cycle. Why doesn't this Cdk activate G1-, S-, G2-, and M-phase proteins all at the same time? B. Please describe how cell death by apoptosis can play a beneficial role in the body's healthy growth. C. For a cell starting in G1, place the following cell cycle events in...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin Myosin Troponin Sarcoplasmic reticulum e. elastic filament that anchors the thick myofilaments to the Z-disc complex of T-Tubules a. main protein of the thick filament, head has two binding sites one binds actir b. long, filament protein covering the myosin-binding sites on each actin molecule c. main protein of the thin myofilament, each individual protein has a high affinity d. control protein on the...
The concentration of Ca^2+ is greater outside a cell relative to inside. Which of the following statements is most likely to occur? A. Ca^2+ ions would enter the cell by osmosis. B. Ca^2+ ions would enter the cell via a channel protein. C. Ca^2+ ions would enter the cell by active transport. D. Ca^2+ would move out of the cell by passive diffusion. 20. Which of the following have mitochondria? A. Bacteria. B. Animal cells. C. Plant cells. D. B...
Which cytoskeletal element is being described? Answer with the letter corresponding to the element: M. Microtubules A. Actin filaments IF. Intermediate filaments 1. Formation requires nucleation at a centrosome 1 2. Forms the contractile ring during cytoplasmic division (cytokinesis) 2 3. Found organized in a characteristic 9+2 arrangement in cilia and flagella 3 4. Examples include keratin and neurofilaments, which are important in the mechanical strength of skin and axons 4 5. Involved cellular crawling such as seen with white...
Which of the following statements is false? Q 17-7 Homework Unanswered. Due in a day Which statement is FALSE? A Kinesins would be likely to move cargoes along microtubules toward the periphery of the cell o B A dynein would be the most likely motor protein to deliver a signal from the cell periphery to the nucleus O C Myosin I can control cell shape by pulling the plasma membrane along actin filaments D M yosin II promotes flagella movement...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the myosin head to cause a power stroke B)When the myosin head releases a phosphate, it can bind actin C)When a new ATP binds to a myosin head, it releases actin D)ATP hydrolysis activates the myosin head so it can bind actin E)When the myosin head binding actin releases ADP, it moves to create the power stroke 2.During skeletal muscle contraction, the length of the...
Exam 2 Micro Spring Form A Page 7 54. The human stomach normally contains few organisms because of the A. rapid emptying of the stomach B. churning action of the stomach c. antiseptie action of the saliva D. disinfectant action of the acid media 55. Which ONE of the following structures protects the procaryotic call from phagocytosis: A. capsule B. cell membrane c. cell wall D. flagella E none of these apply 56. During this period, the rate of growth...
The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells? A) rough ER B) smooth ER C) Golgi apparatus D) nuclear envelope E) transport vesicles Which of the following produces and modifies polysaccharides that will be secreted? A) lysosome B) vacuole C) mitochondrion D) Golgi apparatus E) peroxisome Which organelle often takes up much of the volume of a plant cell? A)...