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Katarina [22]
3 years ago
12

Which term best describes a pure substance that is made up of only one type of atom

Biology
1 answer:
svetoff [14.1K]3 years ago
3 0

Element describes a pure substance that is made up of only one type of atom. Elements cannot be broken down into more simpler substances. There have been 118 elements discovered by scientists so far. 

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The act of breathing raises the blood oxygen level, lowers the blood carbon dioxide concentration, and raises the blood pH. Acco
tino4ka555 [31]

Answer:

A rise in blood carbon dioxide concentration.

Explanation:

The feedback regulation may be defined as the process in which the end product of the metabolic pathway regulates the homeostasis of the body. Two main types of feedback are positive feedback and negative feedback.

The negative feedback mechanism occurs when the end product of the reaction is responsible for the shutdown of the metabolic pathway and decreases its concentration. The breathing is controlled by the negative feedback mechanisms, the increase in carbon dioxide concentration acts as the negative sensor as this sensor is mainly responsible for the increase in amount of oxygen level and maintain homeostasis of the body.

Thus, the correct answer is option (c).

6 0
3 years ago
What can be said about an endothermic reaction with a negative entropy change? the reaction is what can be said about an endothe
zimovet [89]
The reaction of a particular endothermic reaction whether in a negative or positive entropy change is always spontaneous. Temperature differences will be spontaneous throughout the reaction but one thing is constant, heat will always be produced within the said reaction.
7 0
3 years ago
9. A protein molecule which is denatured, has
seraphim [82]

Answer: B. combined with another molecule

Explanation:

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4 0
2 years ago
Which is a requirement for natural selection to occur?
KIM [24]

Answer:

Fewer Offspring than the environment can support

Explanation:

It takes time for  a creature to adapt to its  Environment. So that puts off 2.

Your guaranteed to get traits from your parents so that rules out #1

There isn't really an equal probability of survival for an offspring, ruling out #3.

So that leaves us with 4. I'm not biology expert, I'm just letting you know how I did this problem.  Just in case i'm wrong, I would double check with other answers :)

4 0
3 years ago
Read 2 more answers
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6 0
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