Answer:
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.
Serve as energy-storage substances in plankton etc .
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If a point mutation does not change the amino acid, it's called a SILENT mutation. If a point mutation changes the amino acid to a “stop,” it's called a NONSENSE mutation. Hope this helped :)
Answer: The correct answer for the blank is- d. inhibitory neurotransmitter.
Neurotransmitters are the chemical messengers in the body, which are released by the axon terminal of neuron ( also called nerve cell) and transmit nerve impulse to the neighboring cell ( which could be a muscle cell or a nerve cell) .
There are primarily two types of neurotransmitters that are-
1) Excitatory neurotransmitter and 2) Inhibitory neurotransmitter.
Inhibitory neurotransmitter have inhibitory effects on the neuron that is they reduce the chances that a neuron will fire an action potential. In other words, they are responsible for slowing signals between neurons.
Example- The most common inhibitory neurotransmitter is GABA ( gamma amino butyric acid)
