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Nana76 [90]
3 years ago
8

How did brown test his hypothesis

Biology
1 answer:
Aliun [14]3 years ago
7 0

Answer:did it yuehehfiuhufhiufwhufhuihuihfjkjfhufbvfiurvbuib

Explanation:fghufuhfushfshuihsufdh

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What happens in an aphotic zone of a body of water?
Tatiana [17]

Answer:

O C. There is no photosynthesis.

Explanation:

Aphotic zone of a body of water refers to the part where almost no sunlight. With this condition of water, marine life is limited to species who does not light for survival. The aphotic area also is the basin of the dead organism that submerges from the photic part. Temperatures at these areas are also low

6 0
3 years ago
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Action potential in a motor neuron triggers the release of what neurotransmitter?
vodomira [7]

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.

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3 years ago
Please help with this. It's due today.
rosijanka [135]

Answer: 2, 3, 4, 1

Explanation:

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The three bones which amplify the vibrations of the ear drum are
wlad13 [49]
The pressure from sound waves makes the eardrum vibrate.
The vibrations are transmitted further into the ear via three bones in the middle ear : the hammer (malleus), the anvil (incus) and the stirrup (stapes).
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In a plant, red flower color is incompletely dominant over yellow. What will the distribution of flowers in the F2 hybrids be if
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