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lys-0071 [83]
3 years ago
8

Why do we need to breath air instead of water????

Biology
1 answer:
Georgia [21]3 years ago
3 0
Mainly because our lungs are made to intake air, and if we where to inhale water we would drown. oxygen can only be obtained from the air because our lungs would be able to expell the excess stuff from air easier than in water. hope i helped.
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. Complete the below sentences using: catalyst, intolerance, lactose, chemical reaction, reused, lactase
Black_prince [1.1K]

Answer:

The sentences can be completed as follows:

The enzyme lactase breaks down the sugar lactose.

If the body doesn’t produce much of this enzyme, people have what’s called lactose intolerance.

During the chemical reaction the enzyme doesn’t get used up, but gets reused.

Enzymes are substances that speed up chemical reactions which are also known as catalysts.

Explanation:

Enzymes can be described as molecules which act as biological catalysts i.e they are involved in speeding up a chemical reaction. The enzymes do not get used up in a chemical reaction and hence, they can be reused.

Lactase is an enzyme which helps in breaking down the sugar lactose which is commonly found in the milk. If enough lactase is not produced by a person's body, then he/she becomes unable to digest the sugar lactose. Such a condition is known as lactose intolerance.

6 0
3 years ago
Do you agree with the statement that they "replace" the human heart?
Alex777 [14]
Not necessarily. I have no background on this kind of thing. I would say that they do not only for the facts of 1, where would they get a new heart? 2, I was born with three holes in my heart (I swear to God) and merely got patches. 3, Replacing the heart would be hard so as though when your heart stops beating you die. There would be only a very small space of time that would have to do so.  
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3 years ago
Which organelle fills the cell, holds organelles, and is the place for most of the metabolic activity in the cell occur?
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A. Cytoplasm


(The Nucleus is the control, site of DNA)

Cell wall is in plant cells, giving stability and protecting the cell from rupturing. DNA is stored in the Nucleus, not a organelle.


The answer is Cytoplasm, C.

8 0
3 years ago
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8. You have been asked to develop a safety plan
Lelechka [254]

A Safety Data Sheet refers to a detailed information document prepared by a manufacturer of  hazardous chemicals. It describes the physical and chemical properties of the product.

<h3>What is Safety Data Sheet?</h3>
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  • Describes the physical and chemical properties of the product.
  • A safety data sheet provides comprehensive information about a chemical, including its properties physical, health, and environmental hazards; and  protective measures or safety precautions to be followed in handling, storing, or transporting materials.
  • Safety data sheets inform users about product hazards, how to use the product safely, what to expect if  recommendations are not followed, how to recognize symptoms of exposure, and what to do in an emergency .
  • Safety data sheets provide information about chemicals and help users of those chemicals to make  risk assessments.
  • They describe  hazards arising from chemicals and provide information on handling, storage, and emergency procedures in the event of an accident.

To learn more about Safety Data Sheet from the given link :

brainly.com/question/28244620

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1 year ago
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What is the estimated expected (mean) time for project completion?
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