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How does the force of contraction in muscles change with each subsequent stimulus?
This fact is related to the Adenosine triphosphate metabolism. When you contract a muscle more ATP is required. The subsequent stimulus won't have the same amount of ATP... and the cycle has to be started again. Read below some facts about ATP taken from Wikipedia:
Metabolic processes that use ATP as an energy source convert it back into its precursors. ATP is therefore continuously recycled in organisms: the human body, which on average contains only 250 grams (8.8 oz) of ATP, turns over its own body weight equivalent in ATP each day.
ATP is used as a substrate in signal transduction pathways by kinases that phosphorylate proteins and lipids, as well as by adenylate cyclase, which uses ATP to produce the second messenger molecule cyclic AMP. The ratio between ATP and AMP is used as a way for a cell to sense how much energy is available and control the metabolic pathways that produce and consume ATP. Apart from its roles in energy metabolism and signaling, ATP is also incorporated into nucleic acids by polymerases in the processes of DNA replication and transcription. ATP is the neurotransmitter believed to signal the sense of taste. The structure of this molecule consists of a purine base (adenine) attached to the 1' carbon atom of a pentose sugar (ribose). Three phosphate groups are attached at the 5' carbon atom of the pentose sugar. It is the addition and removal of these phosphate groups that inter-convert ATP, ADP and AMP. When ATP is used in DNA synthesis, the ribose sugar is first converted to deoxyribose by ribonucleotide reductase.
What else can I help you with?
What is any change in the environment that causes a response in the organism is called?
stimulus
What is a change in the environment that causes a. Response?
stimulus
How does a stimulus and a reaction work?
A stimulus is a change in the environment that triggers a response in an organism. When an organism receives a stimulus, it processes the information and produces a reaction, which is a specific behavioral or physiological change to cope with the stimulus. This process allows organisms to adapt and survive in their environment.
What is a change in behavior caused by a stimulus?
A change in behavior caused by a stimulus is known as a reflex. It is an automatic response to a specific stimulus that helps organisms quickly react to potential dangers or opportunities in their environment. Reflexes are typically innate and do not require conscious thought.
What is a change in an organisms surroundings that provides a response?
A stimuli or stimulus is a change in an organisms surroundings that provokes a response from the organism.
What does not act as a stimulus to initiate a muscle contraction?
a change of temperature.
What do not act as a stimulus to initiate a muscle contraction a. hormonal activity b. neurotransmitters c. a change in the pH of a muscle d. a change of temperature?
d.
When a muscle cell responds to a stimulus calcium is released from the?
When a muscle cell responds to a stimulus, calcium is released from the sarcoplasmic reticulum. This calcium binds to troponin, triggering a conformational change that allows myosin to bind to actin and initiate muscle contraction.
What change in an organism's surroundings that will cause the organism to react is called a?
Stimuli are things in the environment that cause change. A reaction to a change in the environment is a reaction to a stimulus.
A change in an organism's environment that causes the organism to react is called?
The change is actually a stimulus and when the organism reacts to the stimulus, it becomes a response. Overall, The answer is a stimulus.
A change that causes a response in your body is a what?
A change that causes a response in your body is a stimulus. When a stimulus is detected by the body, it triggers a reaction that helps maintain balance and homeostasis.
Why testes blow or bulge at the time of urination only?
May be because Testicles move due to contraction of dartos muscles as they respond to temperature change.
What is a word that means a change in the environment?
The word is "transition."
What is mechanical stimulus?
A mechanical stimulus refers to a physical force or change that affects an object or organism, often leading to a response. In biological contexts, it can involve mechanical pressure, stretch, or vibration that triggers sensory neurons, influencing processes such as touch, proprioception, or pain. This type of stimulus is crucial for many physiological functions, including muscle contraction and the maintenance of tissue health.
What are the four phases of cardiac cycle?
The four phases of the cardiac cycle are diastole, isovolumetric contraction, systole, and isovolumetric relaxation. During diastole, the heart muscles relax and the chambers fill with blood. In isovolumetric contraction, the heart muscles contract but the chambers do not change volume. Systole is when the chambers contract and blood is ejected. Finally, isovolumetric relaxation is when the heart relaxes but the chambers do not change volume.
What is any change in the environment that causes a response in the organism is called?
stimulus
What do you call change in the environment that causes an organism to take action?
stimulus
