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4 years ago

Why do some reactions release energy while others absorb energy?

1 answer:

3 0

A reaction in which energy is absorbedfrom the surroundings is called an endothermic reaction. In endothermicreactions the enthalpy of the products is greater than the enthalpy of the reactants. Because reactions releaseor absorb energy, they affect the temperature of their surroundings. If reactant molecules in a particular reaction have more energy than the product molecules, then energy is released to the surroundings in the form of heat and light. And when this happens, the reaction is usually called an exothermic reaction.
On the other hand, if the product molecules have more energy than the reactants, then the reaction absorbs energy from the surroundings. And when this happens, the reaction is usually called an endothermic reaction.

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The movement of a large decaying food particle into the cell would provide a source of nutrition but might also be potentially h

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4 years ago

If an inhibitory synapse fires at the same time and at the same distance from the initial segment as an excitatory synapse of th

aivan3 [116]

Answer:

If an inhibitory synapse fires at the same time and at the same distance from the initial segment as an excitatory synapse of the same intensity there will be no changes in the potential in the firing zone.

Explanation:

An excitatory synapse is one capable of depolarizing a cell and boosting the production of action potential, provided it is capable of reaching the threshold of said potential.

On the other hand, an inhibitory synapse is able to hyperpolarize the cell membrane and prevent an action potential from originating, so that they can inhibit the action of an excitatory synapse.

The interaction between two synapses, one excitatory and one inhibitory, -called synapse summation- will depend on the strength that each of them possesses. In this case, the intensity of both synapses being the same, there will be no changes in the membrane potential in the firing zone.

Learn more:

Excitatory and inhibitory postsynaptic potentials brainly.com/question/3521553

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4 years ago

In your letter, you need to explain how the theory of evolution is supported by evidence. Be sure to include the 4 pieces of evi

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Answer:Brudder bought a coconut, he bought it for a dime

His sister had anudder one, she paid it for de lime

She put de lime in de coconut, she drank 'em bot' up

She put de lime in de coconut, she called de doctor, woke 'im up

And said "Doctor, ain't there nothin' I can take?"

I said "Doctor, to relieve this bellyache?"

I said "Doctor, ain't there nothin' I can take?"

I said "Doctor, to relieve this bellyache?"

Now, lemme get this straight

You put de lime in de coconut, you drank 'em bot' up

Put de lime in de coconut, you drank 'em bot' up

Put de lime in de coconut, you called your doctor, woke 'im up"

Said "Doctor, ain't there nothin' I can take?"

I said "Doctor, to relieve this bellyache?"

I said "Doctor, ain't there nothin' I can take?"

I said "Doctor, to relieve this bellyache?"

You put de lime in de coconut, you drink 'em bot' togedder

Put de lime in de coconut, then you feel better

Put de lime in de coconut, drink 'em bot' up

Put de lime in de coconut and call me in the morning

Whoo-ooh-ooh, ooh-ooh-oooh, ooh-ooh, ooh-ooh-ooh-ooh

Whoo-ooh-ooh, ooh-ooh-oooh, ooh-ooh-ooh, ooh-ooh-oooh

Whoo-ooh-ooh, a-hoo, a-hoo, a-hoo, a-hoo, a-hoo, a-hoo, a-hoo

Brudder bought a coconut, he bought it for a dime

His sister had anudder one, she paid it for de lime

She put de lime in de coconut, she drank 'em bot' up

And put de lime in de coconut, she called de doctor, woke 'im up

Said "Doctor, ain't there nothin' I can take?"

I said "Doctor, to relieve this bellyache"

I said "Doctor, ain't there nothin' I can take?"

I said "Doctor, now lemme get this straight"

You put de lime in the coconut, you drink 'em bot' up

Put de lime in the coconut, you drink 'em bot' up

Put a lime in the coconut, you drink 'em bot' up

Put de lime in the coconut, you're such a silly woman

Put a lime in the coconut and drink 'em bot' togedder

Put de lime in the coconut, then you feel better

Put de lime in the coconut, drink 'em bot' down

Put de lime in your coconut, and call me in the morning"

Whoo-hoo, ain't there nothin' you can take?

I say "Whoo-hoo-ooh to relieve your bellyache?"

You say "Well whoo-hoo-ooh, ain't there nothin' I can take?"

I say "Whoo-hoo-ooh, to relieve your bellyache?"

You say "Yaa-ahh, ain't there nothin' I can take?"

I say "Yaa-ahh, to relieve this bellyache?"

I said "Doctor, ain't there nothing I can take?"

I said "Doctor, you're such a silly woman"

Put de lime in the coconut and drink 'em bot' togedder

Put de lime in the coconut, and you feel better

Put de lime in the coconut, drink 'em bot' up

Put de lime in the coconut and call me in the morning

Yes, you call me in the morning

You call me in the morning, I'll tell you what to do

If you call me in the morning, I'll tell you what to do

Well, if you call me in the morning, I'll tell you what to do

Explanation:

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3 years ago

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4 years ago

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Somatic mutations are acquired after birth in non-reproductive cells. These changes occur in only certain cells of the body and can be caused by tobacco use, ultraviolet radiation, viruses, chemicals and age. Acquired mutations are the most common cause of cancer.

Humans experience many somatic mutations over a lifetime, and the human body is normally able to correct most of these changes. This is why there is only a small chance of one mutation causing cancer. It normally takes many mutations over a lifetime to cause cancer. This is why older people are the most likely group to get cancer, as they have had more chances for mutations to build up.

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4 years ago