BIOLOGY HIGH SCHOOL

Why are grassland and forest soils good for farming?A.
A layer of permafrost prevents the decay of organic material that enriches the soil.

B.
Too much water promotes chemical weathering and washes away nutrients.

C.
There is enough water to promote chemical weathering, but not enough to wash away nutrients.

D.
There is not enough rainfall to promote chemical weathering or retaining nutrients.

Answers

Answer 1
Answer: I believe the answer is C. Grasslands and forests do not have permafrost--present in tundra and taiga so A can be eliminated. B  is not right because forests and grasslands definitely do not get TOO much rain, assuming they're not talking about tropical rain forests. 

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When an organism reproduces asexually it usually has
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Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin made during his time aboard the H.M.S. Beagle prompted him to ask which question?
Asexual reproduction always yields offspring that are identical to their parent. True False
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Jerome also had blood work done to confirm the MI. The presence of troponin, or cardiac enzymes such as CK-MB, are a positive indicator of an MI. Why is their presence at higher levels in the blood indicative of an MI?a. They are by-products of aerobic metabolism and if they are present in higher amounts in the blood it shows that the myocardium is working harder.
b. They are substrates for aerobic metabolism and if increased in the blood show that the cardiac muscle is not functioning normally.
c. These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
d. They are by-products of anaerobic metabolism (glycolysis) and if increased indicate that the heart is not receiving oxygen.

Answers

Answer:

c.These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.

Explanation:

  • When there is a decreased blood flow to the heart or if a particular part of the heart stops working then this is known as myocardial infarction (MI) and due to this the heart muscle gets damaged.
  • There are several biomarkers that are used to evaluate the functioning of the heart and these are known as cardiac markers, an example of this is Ck-MB which is an isoform of creatine kinase.
  • The CK-MB isoform is found in the cytosol of the heart muscle cells and it plays a role in causing the movement of high energy phosphates in and out of the mitochondria.
  • If there is a damage to the heart muscle cells which usually occurs following a myocardial infarction CK-MB levels elevates in the blood for a short period of time and this indicates MI.

What is a multicellular organism? an organism that is made up of only one cell. an organism that is made up of only one type of cell. an organism that is made up of more than one cell. an organism that is too small to see without a microscope?

Answers

an organism that is made up of more than one cell.
An organism that is made up of more than one cell .

Anita has just pointed her toe in dance class. What Anatomical motion did she make?

Answers

Answer:

Plantarflexion

Explanation:

The term plantar flexion refers to the movement of the foot in a downward motion away from the body.

What structure of the respiratory system allows for gas exchange alveoli
pharynx
nose
trachea

Answers

The correct answer is alveoli.

At the end of the respiratory tree, alveoli are located. These are tiny, balloon-shaped air sacs are arranged in clusters throughout the lungs. these are the site of  gaseous exchange as alveoli are surrounded by thin pulmonary capillaries which allows exchange of gases. The oxygen diffuse into the blood capillaries and the carbon dioxide diffused into the alveolar space from the blood capillaries.

Hello Pgoodrichstat!

The structure that allows for gas exchange is alveoli.

Cheers!
-Blizzard

Which statement describes natural selection

Answers

Where is the statement?

Answer: You didn't put any statements lol

Explanation:

But basically natural selection is when organisms with the most favorable traits will survive and reproduce. (ex. there are 2 strains of bacteria - one that resists antibiotics and one that doesn't. The one that resists the antibiotics will strive and reproduce because that will be the more favorable trait that will be able to be inherited by future generations.)

Which structure of a protein is the folding of the protein chain?Answer options:
a: primary
b: secondary
c: teriarty
d: quaternary

Answers

I believe answer is D: Quaternary. Quaternary is defined for the 3d folding of polypeptide.




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