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xenn [34]
3 years ago
14

Why are substances able to diffuse through the capillaries?

Biology
1 answer:
Stels [109]3 years ago
7 0
Capillaries are made up of very thin and flat tissues that are spread across the body. Substances are able to diffuse through the capillaries because of the presence of blood. Particularly, the red blood cells that make-up blood within the body. These cells have the ability to carry oxygen, carbon dioxide, glucose, and water to pass through the capillaries. 
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PLEASE HELP 15 POINTS!!!
RUDIKE [14]
The biosphere is everything. the whole planet. so all of the above is right
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3 years ago
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Which of the following explains how water is recycled on Earth? A. Ice gains heat, becomes liquid, and changes back to ice as it
Lunna [17]

Answer:

Its option D. All of the above.

Explanation:

As all the facts and processes causes recycling of water

3 0
2 years ago
An enzyme was isolated from digestive juices taken from the small intestine. an experiment was set up to test the ability of the
Sergio039 [100]
1. Our results showed that test tube B contained end products of protein digestion, meaning that the isolated enzyme has the ability to break down protein. The end products of protein digestion include small polypeptides, dipeptides, and amino acids. In general, test tube B will contain the building blocks of proteins, which are the amino acids.

2. The two test tubes were placed in a hot water bath at 37oC. This is because the enzyme studied is a human enzyme and it works best at the human body temperature, which is approximately 37oC.
Enzymes are biological catalysts, which means that they accelerate chemical reactions. As a result, an enzyme's activity is greatly affected by temperature. Every enzyme, depending on each function and origin, has a specific range of ideal temperature conditions. If the temperature rises above the maximum accepted, then the enzyme denatures and loses its structure.

3. If the enzyme studied was added in a tube containing starch instead of proteins, then nothing would happen. This is because the enzymes are highly specialized and have very specific actions. It has been proved that this enzyme's activity involves the digestion of proteins.
Starch is a polysaccharide produced by plants, this means that starch is a carbohydrate. Given that starch is not a protein, it will not be digested by the enzyme. An enzyme digesting proteins, will not have any effect on carbohydrates.

4. The smaller molecules which are the result of the digestion happening in the digestive system are absorbed by the human body. More specifically, the products of protein digestion are absorbed by the intestine and then transported into the bloodstream. From the blood, they are then absorbed by other tissues.
After they are absorbed, they are used to build muscles or other compounds which can produce energy.
6 0
3 years ago
Which two characteristics describe all organisms in the domain Eukarya?
Ratling [72]

Answer:

Their cells are eukaryotic is the right answers

Explanation:

I hope this will help you :)

4 0
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In a cow that is heterozygous for long hair (LI), what is the probability that its egg cell will contain the dominant allele L?
Katarina [22]

Answer:

50 50 you have a large letter an a lil one that means one's dominant an the other isn't

7 0
3 years ago
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