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Leviafan [203]
2 years ago
8

The ___ receptor is upregulated when you chronically use, then withdraw, from alcohol.

Biology
1 answer:
Fudgin [204]2 years ago
7 0
It is the NMDA receptor
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Answer first and i will mark you brainlest.
WARRIOR [948]

Answer:

Melody is a rhythmic sequence of pitches that create a musical phrase or motif. A melody also consists of two parts: pitch and rhythm. We sometimes think of melodies as the vocal part of a song. However, a melody can also be the top line of your instrumental drop, a signature bass line, or even a unique vocal sample.

Explanation:

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Name the layers of the earth from smallest to largest! help?
nalin [4]
Okay, let's see... 

In the center, we have the inner core, then the outer core, and then the slow moving mantle. On the outside, we have the crust a.k.a. where we live. =]
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3 years ago
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In an investigation of the cycling of environmental gases, a
pav-90 [236]

Answer:

D) It would contain less nitrogen.

Explanation:

In an investigation of the cycling of environmental gases, a  student placed water and bromthymol blue in each of four test  tubes as shown in the diagrams below. No additional items were  placed in tube 1, a snail was placed in tube 2, an aquatic plant  (elodea) was placed in tube 3, and both a snail and an elodea  were placed in tube 4. The tubes were then stoppered and placed  in bright light for 24 hours. The solution in tube 3 changes after 24 hours because it would contain less nitrogen.

The dfferent tubes are shown in the picture that I uploaded.

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3 years ago
The amount of a harmful chemical to which a person is exposed to, is  also known as response.
Kitty [74]

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True.

<em>I think..</em>

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What ways do enzymatic catalysts increase the rates of reactions? they shift the reaction equilibrium toward the products they d
Elodia [21]
This is a question regarding how enzymes increase the rates of reactions. There are choices and the instructions is to check all that apply.

<span>1. They shift the reaction equilibrium towards the products. </span>
<span>2. They increase the concentration of the reactants. </span>
<span>3. They lower the activation energy of the reaction. </span>
<span>4. They decrease the free energy of a reaction. </span>
<span>5. They promote the formation of a transition state. 

The correct answers in this question are "they lower the activation energy of the reaction" and "they promote the formation of a transition state". Enzymes do not necessarily shift the the reaction equilibrium to the products, as there are reversible enzymatic reactions that can reverse the pathway back to the substrates. They do not increase the concentration of the reactants as the concentration of the reactants is an independent variable in this process. They do not decrease the free energy of activation as this is a constant in every reaction depending on the substrates and the products. 

Enzymes do, however, lower the activation energy of the reaction meaning it will take less energy and effort for the substrates to reach the activation energy to transform it to its transition state then to the products. With this said, enzymes promote the formation of a transition state.

Attached is a simplified image on how enzymes work. </span>

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