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Questions in biology

[Answered] What is the role of troponin C in muscle contraction? A) It forms cross bridges with actin. B) It binds calcium ions, leading to muscle contraction activation. C) It prevents muscle contraction by blocking myosin. D) It provides structural support to myofibrils.

[Answered] ACTIVITY 1. What are the common signs of estrus? 2. What are ways of identifying silent heaters? 3. What are the different Systems of Breeding? 4. What are the different Systems of mating and their advantages?

[Answered] Two daughter cells are most likely to inherit which one of the following from the parent cell? A) a change in a nucleotide in mRNA B) a change in a nucleotide in tRNA C) a change in a nucleotide in rRNA D) a change in a nucleotide in DNA E) a change in a protein

[Answered] Which level of organization is best represented by the liver? A. tissue B. organ C. organism D. organ system

[Answered] Which of the following best describes the length-tension relationship in skeletal muscle? A. Tension increases with sarcomere length until it reaches a maximum at full extension. B. Tension is independent of the length of the sarcomere. C. Tension decreases as sarcomeres are in resting length. D. Tension is maximal when the sarcomeres are at their normal resting length.

[Answered] A sequence of nucleotides in DNA that codes for a functional product refers to a(n) A. gene B. genome C. proteome D. protease

[Answered] Which muscle fiber type is primarily involved in endurance activities such as marathon running? A. Type lla (fast-twitch, oxidative) fibers. B. Hybrid fibers that contain characteristics of both Type I and Type Il fibers. C. Type I (slow-twitch) fibers. D. Type llb (fast-twitch, glycolytic) fibers.

[Answered] What type of contraction occurs when a muscle exerts force equal to the load, causing no change in length? A. Eccentric contraction. B. Concentric contraction. C. Isometric contraction. D. Isotonic contraction.

[Answered] What did Dr. Salim Ali suggest about the Great Indian Bustard?

[Answered] Which protein is responsible for blocking the binding sites on actin when a muscle is at rest? A) Dystrophin. B) Myosin. C) Tropomyosin. D) Troponin C.