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charle [14.2K]
3 years ago
12

The cycle of the moon’s phases repeats in a predictable way. About how long does it take to cycle from one new moon to the next

new moon?
C. about one day
A. about one day
D. about one month
B. about one year
Biology
1 answer:
Alex Ar [27]3 years ago
8 0
C- About one month
Hope this helps
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3.The reduced potential causes hundreds of a)________________________ channels to open on that part of the cell membrane. The de
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The reduced potential causes hundreds of <u>voltage-gated sodium</u> channels  to open on that part of the cell membrane. The depolarization of the cell causes more of <u>voltage-gated sodium </u>channels to open in adjacent parts of the cell membrane. This begins the wave of of <u>depolarization</u>  moving down the axon. Depolarization begins at the <u>axon hillock.</u>

Explanation:

When there is no neuron signaling it becomes polarized, termed as resting membrane potential (RMP) at a threshold voltage (around -55 mV), due to the action of the sodium-potassium pump and the potassium leak channels.  

When a change in the RMP occurs, depolarization takes place which causes the voltage-gated sodium channels to open and sodium ions rush into the nerve cell which in turn will increase the voltage threshold to nearly around +40 mV and also charges the neuron positive. This depolarization moves down the axon. This increase in threshold stops the sodium influx and opens the potassium channels to rush the potassium out of the cell.

All these actions decrease the membrane potential leading to a wave of depolarization and going back to resting state. Depolarization begins depending upon the potential gradient at the axon hillock.

8 0
4 years ago
Before Starch can enter a cell it must be
Mandarinka [93]
It must be cooked and seasoned so I can eat it I’m hungry
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3 years ago
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All living organisms break down sugar to obtain energy using cellular respiration, Which of the following chemical reactions rep
Ghella [55]

Answer:

The chemical reaction that represents the process of aerobic cell respiration is oxygen + glucose → water + carbon dioxide + energy

Explanation:

Cell respiration occurs in the mitochondria of eukaryotic cells and consists of a series of chemical reactions in which energy in the form of ATP molecules is obtained from a glucose molecule in the presence of oxygen.

<u>Glucose is the main energetic substrate</u> to be able to synthesize energy in the form of ATP, through oxidative phosphorylation. At the end of the process ATP is obtained as products, and as waste compounds water and carbon dioxide, which can be schematized in the following chemical reaction:

              <em>              C₆H₁₂O₆  +  6O₂ →  6H₂O  +  6CO₂ + ATP ↑</em>

<em>                Glucose + Oxygen → Water + Carbon dioxide + Energy ↑</em>

This reaction summarizes what happens in aerobic cellular breathing, which is necessary to synthesize energy for cellular functions.

The other reactions:

  • <em>oxygen + water </em><em>→</em><em> glucose + lactose </em>
  • <em>glucose + lactose </em><em>→</em><em> oxygen + water </em>
  • <em>water + carbon dioxide + energy </em><em>→</em><em> oxygen + glucose</em>

<em>do not represent the components or the order of the reactions that occur in aerobic cell respiration</em>

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3 years ago
Are decomposers heterotrophs or autotrophs? Explain your answer.
barxatty [35]
A decomposer is a hetrotroph i cant explain it though because im horrible at explaining things
4 0
3 years ago
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A population of mice has black or brown hair. The gene for black hair color (B) is dominant over brown (b). If 16% of the mice a
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Answer

if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2 
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hope this helps

IN exchange can u mark me as brainlist
7 0
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