Description : What are the functions of potassium? (A) In muscle contraction (B) Cell membrane function (C) Enzyme action (D) All of these
Last Answer : Answer : D
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 : In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of ... involved in blood coagulation and is the most important element of bone salt. Name this element.
Last Answer : ANSWER: Calcium
Description : Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in ... CDKs) are among the most important. How do CDKs function to control the cell cycle?
Last Answer : CDKs phosphorylate various protein substrates that are required for cell cycle progression. Some of the important substrate proteins that CDKs phosphorylate include condensin proteins, which are essential ... which form a stabilizing network under the nuclear membrane that assembles during mitosis.
Description : Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may ... involved the catalytic production of superoxide anion (O 2 ) by the enzyme xanthine oxidase.
Last Answer : Answer: ABCD DISCUSSION: Oxidants are reactive oxygen metabolites that have both physiologic and pathophysiologic roles. As potent oxidizing agents, oxidants are involved in cytochrome P ... leukocyte infiltration and activation, causing further tissue damage by the release of cytotoxic proteases
Description : Cell recognition and adhesion occur due to biochemicals of cell membrane named (a) Proteins (b) Lipids (c) Proteins and lipids (d) Glycoproteins and glycolipids
Last Answer : Ans:(d)
Description : The door to your house is like the __________________ of a cell membrane? (A) Phospholipid bilayer (B) Integral protein (C) Recognition protein (D) Peripheral protein
Last Answer : (B) Integral protein
Description : Dye injected into a plant cell might be able to enter an adjacent cell through a (A) Tight junction (B) Microtubule (C) Desmosome (D) Plasmodesma
Last Answer : (D) Plasmodesma
Description : In heart cells, which of the following serves as a secondary messenger, speeding up muscle cell contraction in response to adrenaline ?
Last Answer : In heart cells, which of the following serves as a secondary messenger, speeding up muscle cell contraction in ... A. cAMP B. cGMP C. GTP D. ATP
Description : Which one of the following describes the mode of action of tetanospasmin? a. It inhibits muscle contraction. b. It damages and lyses red blood cells. c. It disrupts cell tissues. d. It inhibits muscle relaxation.
Last Answer : d. It inhibits muscle relaxation.
Description : A protoplast is a cell (a) undergoing division (b) without cell wall (c) without plasma membrane (d) without nucleus.
Last Answer : (b) without cell wall
Description : During cell division in apical meristem, the nuclear membrane appears in (a) telophase (b) cytokinesis (c) metaphase (d) anaphase.
Last Answer : (a) telophase
Description : During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This ... as: a) prophase (pron: prO-phase) b) metaphase c) anaphase d) telophase
Last Answer : ANSWER: D -- Telophase
Description : When the potential difference across a membrane of a neuron equals the threshold, what results? a) movement of the membrane b) action potential c) relaxation d) contraction
Last Answer : ANSWER: B -- ACTION POTENTIAL
Description : What is a fanlike microtubule? -Biology
Last Answer : answer:
Description : Where is the microtubule located? -Biology
Description : Difference between microfilament and microtubule? -Biology
Description : Where are microtubule motors in mitosis? -Biology
Description : Is microtubule in plant and animal cells? -Biology
Description : Difference between cytoskeleton and microtubule? -Biology
Description : Diploid cell in human, where cell division does not occur :- (a) Heart cell (b) Muscle cell ( c ) Nerve cell
Last Answer : Diploid cell in human, where cell division does not occur :- (a) Heart cell (b) Muscle cell ( c ) Nerve cell A. ... b and c C. a and c D. a, b and c
Description : In most nerve and muscle cell, the membrane potentical is a. 60 mv b. 70 mv c. 85 mv d. 100 mv
Last Answer : 85 mv
Description : According to the sliding - filament model of muscle contraction, the molecules that moves to shorten a muscle are :-
Last Answer : According to the sliding - filament model of muscle contraction, the molecules that moves to shorten ... B. Collagen C. Myosin D. Creatine phosphate
Description : During contraction and relaxation of striated muscle fibre the length of A band usually :-
Last Answer : During contraction and relaxation of striated muscle fibre the length of A band usually :- A. ... . Increases C. Decreases D. Decreases too much
Description : During muscle contraction (a)____ energy is converted into (b)____ energy
Last Answer : During muscle contraction (a)____ energy is converted into (b)____ energy
Description : Contraction of a muscle is caused by
Last Answer : Contraction of a muscle is caused by
Description : Muscle contraction is initiated by a signal sent by the _____
Last Answer : Muscle contraction is initiated by a signal sent by the _____
Description : The main source of energy during muscle contraction is____
Last Answer : The main source of energy during muscle contraction is____
Description : Mechanism of muscle contraction is best explained by____
Last Answer : Mechanism of muscle contraction is best explained by____
Description : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus r
Last Answer : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : ... D. If both Assertion and Reason are false.
Description : The following diagram (Figure 20, 35) describes the muscle contraction . Identify A to D
Last Answer : The following diagram (Figure 20, 35) describes the muscle contraction . Identify A to D A. ... Actin filament, C-Silding/Rotation , D-Cross bridge,
Description : ATP provides energy of muscle contraction by allowing for
Last Answer : ATP provides energy of muscle contraction by allowing for A. Cross-bridge attachment of myosin to ... Release of `Ca^(+)` from sarcoplasmic reticulum
Description : Immediate source of energy for muscle contraction is
Last Answer : Immediate source of energy for muscle contraction is A. Glucose B. GTP C. Creatine phosphate D. ATP
Description : Basic unit of muscle contraction is
Last Answer : Basic unit of muscle contraction is A. Actin B. Myosin C. Sarcomere D. Tropomyosin
Description : Chemical ions responsible for muscle contraction are
Last Answer : Chemical ions responsible for muscle contraction are A. `Ca^(++) and K^(+)` B. `Na^(+) and K^(+)` C. `Na^(+ ... ^(++)` D. `Ca^(++) and Mg^(++) ions `
Description : The contraction of muscle of shortest duration is seen in
Last Answer : The contraction of muscle of shortest duration is seen in A. Jaws B. Eyelids C. Heart D. Intestine
Description : The lactic acid generated during muscle contraction us flnally converted to glycogen in
Last Answer : The lactic acid generated during muscle contraction us flnally converted to glycogen in A. Muscle B. Kidney C. Liver D. Pancreas
Description : According to sliding filament theory of muscle contraction, the filament that move to shorten a muscle are
Last Answer : According to sliding filament theory of muscle contraction, the filament that move to shorten a muscle ... B. Actin C. Collagen D. Creatine phosphate
Description : In which category of muscle fibers, contraction can be regulated by acetylcholine neurotransmitter ?
Last Answer : In which category of muscle fibers, contraction can be regulated by acetylcholine neurotransmitter ? A. ... . Smooth muscle fibers D. all of these
Description : When a muscle is stretched by a contraction of the opposing muscles it is called .?
Last Answer : if you're on OdysseyWare your answer would beActive stretching.............. =)
Description : What is Involuntary muscle contraction in an artery?
Last Answer : What is the answer ?
Description : Can you control the contraction of skeletal muscle?
Last Answer : Need answer