I need the answer for this question because i have homework for ADNOC
Answer:
True
Explanation:
Meiosis was previously known as reduction/division. Meiosis I lowers ploidy from 2n to n (reduction), whereas Meiosis II divides the remaining chromosomes in a mitosis-like process (division)
Answer:
Action potential in a motor neuron triggers the release of acetylcholine (ACh) neurotransmitter.
Explanation:
Acetylcholine: It is a neurotransmitter released by motor neurons which bind to the receptors end plates of the motor. When an action potential travel down the motor neuron's axon, neurotransmitter release occurs resulting in an influx of calcium and altered permeability of the synaptic terminal membrane.
The Ca2+ ions allow synaptic vesicles to move and bind with the presynaptic membrane which is present on the neuron and released neurotransmitter from the vesicles into the synaptic cleft. Once it's released ACh diffusion occurs across the synaptic cleft to the motor end plate, and binds with ACh receptor. As the neurotransmitter ACh binds, these ions channel open and sodium ions cross the membrane into the muscle cells.
In this phase reduction of voltage inside and outside the cell occurs, which is known as depolarization. When ACh binds to the motor end plate this depolarization is known as end plate potential. Then depolarization spread with the sarcolemma and creating an action potential. This action potential moves the entire cell and creating a wave of depolarization.
The correct answer is C. It continues to eat the amount of food it does normally.
When rat's ventromedial nucleus is destroyed the rat will become more hyper physics and it continues to eat until it has doubled its normal weight.
Ventromedial nucleus of hypothalamus is termed as nucleus of hypothalamus.
It is a distinct morphological nucleus which involved in terminating hunger, fear, sexual activity and thermoregulation.
Ventromedial nucleus of hypothalamus is divided into subdivisions. For example, dorsomedial, ventrolateral, central and anterior. VMN is most commonly associated with satiety. In rats ventromedial nucleus is caused by over-eating and obesity.
The communities plus abiotic and biotic surroundings is called an ecosystem
