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How do calcium ions participate in muscle contraction? Why do both muscle contraction and muscle relaxation spend energy?
In the muscle cells calcium ions are kept within the sarcoplasmic reticulum. When a motor neuron emits stimulus for the muscle contraction neurotransmitters known as acetylcholine are released in the neuromuscular junction and the sarcolemma is excited. The excitation is conduced to the sarcoplasmic reticulum that then releases calcium ions into the sarcomeres.
Endocrine glands Endocrine glands have no ducts - so these are also called as ductless glands Eg.Pituitary etc., These glands secrete chemical substances called HORMONES
Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane. The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a la
Explain about thiol proteases Group of thiol proteases, similar in structure to each other, are found in plants. These include papain from the papaya fruit and ficain from f
What is Risk Risk : A function of the probability of an adverse effect and the magnitude of that effect, consequential to hazard(s) in food.
What is Diatoms? Bacillariophyta are commonly known as diatoms because of their unique structure. These unicellular photosynthetic organisms are composed of two overlapping glas
Theca - body form Protozoans It is a close-fitting hard structure around the plasma membrane, mainly composed of cellulose. It can be compared with the ceil wall of a plant ce
Determine the genotypes and phenotypes of the F1 generaiton from a colour blind father and a mother who is homozygous for normal colour vision
What is Menu Planning? Any individual who carries the responsibility of providing meals has to take decisions regarding what to serve, how much to serve, how much to spend, whe
Acid indigestion It is also known as ruminal acidosis, acute carbohydrate engorgement, rumen over load or lactic acidosis. Ingestion of large quantities of highly fermentable c
Q. What is ecological succession? The Ecological succession is the changing sequence of communities that live in an ecosystem during a given time period.
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