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Lina20 [59]
3 years ago
12

Explain a graded potential.

Biology
1 answer:
Talja [164]3 years ago
7 0

Explanation:

Neurons communicate by changes in electrical properties of the plasma membrane that move from one cell to another. The architecture of the neuron aids the spread of these electrical signals called nerve impulses. A potential difference exists across every cell’s plasma membrane. The side of the membrane exposed to the cytoplasm is the negative pole, and the side exposed to the extracellular fluid is the positive pole. This potential difference is called the membrane potential.

If the plasma membrane is depolarized (moved toward a polarity above that of the resting potential) slightly, an oscilloscope will show a small upward deflection of the line that soon decays back to the resting membrane potential. These small changes in membrane potential are called graded potentials because their amplitudes depend on the strength of the stimulus. Graded potentials can be either depolarizing or hyperpolarizing and can add together to amplify or reduce their effects. The ability of graded potentials to combine is called summation. The level of depolarization needed to produce an action potential is called the threshold.

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Define and give 2 examples of haploid cells
Step2247 [10]

Answer:

Haploid cells contain a single set of chromosomes. Gametes are an example of haploid cells produced as a result of meiosis. Examples of gametes are the male and female reproductive cells, the sperm and egg cell respectively.

Explanation:

6 0
3 years ago
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Orlov [11]
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3 0
3 years ago
Select the correct answer.
disa [49]

Protein recommendations are the daily dietary protein requirements for an individual based on that individual's weight.

<h3>What was the dietary protein requirement?</h3>

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Christine has already ingested half of the 40 grams of dietary protein that her doctor recommended. This indicated that she had already ingested roughly 20 grams of the recommended dietary protein and needed an extra source of protein to meet her daily needs. Christie must therefore have four more servings of snacks to complete her daily protein requirements.

Learn more about dietary protein requirements here:

brainly.com/question/15093479

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6 0
2 years ago
What is happening to the amount of carbon in the living things in a biodome
Rzqust [24]

Answer:

Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall. How do they figure it out? They get evidence from the sim and from video of an experiment to determine which organisms do cellular respiration.

Explanation:

Hope this helped you :D

6 0
3 years ago
The egg cell of a plant is located in the <br> 1. style<br> 2. ovary<br> 3. stigma
Arturiano [62]

Hey there!

The egg cell of a plant is located in the <em>Ovary</em>.

Hope this helps!

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3 years ago
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