The most weathered and leached of all soils are the ________.

1 answer:

3 0

The most weathered and leached of all soils are the OXISOLS.
Oxisols are heavily weathered soils that are found primarily in the inter tropical regions of the world. The soil is typically rich in iron and aluminium oxides minerals. The soil usually have very low level of fertility.

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The motion of an object is called inertia. What force works against an object in motion, or inertia?

Mademuasel [1]

Answer:

i think it is friction bcs gravity helps an abject move and friction causes it to slow down

Explanation:

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Why are proteins considered organic molecules?

KATRIN_1 [288]

Answer:

C. They are made from many carbon atoms

Explanation:

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Shamona, a pregnant mother in Flint, Michigan, is concerned about the drinking water, which shows high levels of lead. Shamona s

STatiana [176]

Answer:

Option (3).

Explanation:

Teratogens may be defined as the chemicals that can cause birth defects in the fetus. Substances like alcohol, lead and nicotine acts as the main agents of tertaogens.

Shamona is drinking water that contains high level of lead. The element lead is harmful for the fetus. Even the small concentration of lead is enough to cause birth defects. The lead exposure can cause the abnormal development of brain and damages the brain of fetus. The fetus has low birth weight also.

Thus, the correct answer is option (3).

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The reaction that is carried out by the enzyme catalase produces __________.

ch4aika [34]

H20 and 02 is the correct answer.

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Which organs are responsible for destroying old red blood cells?

Elan Coil [88]

<span>Spleen is also known as the graveyard of RBC, if it helps u

1.Stem cells in bone marrow make all blood cells. RBC lives about 120 days.
RBC are destroyed in Spleen. This process takes place as:
- RBCs are ruptured.
- Heme and globin portions separated.
- Globin > amino acids.
- Iron transferred in transferrin into the blood > into bone marrow for reuse.
- Heme > Biliverdin > Bilirubin > liver >small intestine.

2.Reticuloendothelial cells participate in the destruction of senescent RBC's. The spleen is a well suited site of RBC destruction given that cells must course through 2-3 micron apertures in the walls of splenic sinusoids, which is an ultimate test of cell pliability. Rigid cells are entrapped and phagocytosed. Intra-erythrocyte inclusions are removed during splenic circulation.
Destruction of RBCs happens within reticuloendothelial cells – NOT in the circulation. Globin and heme get recycled, porphyrin is degraded to bilirubin which is conjugated by the liver and excreted in the gut. Rate limiting step is conjugation. Indirect (unconjugated) bilirubin is result if this doesn’t happen.
Normally ~10% RBCs lyse while in circulation Þ Hgb gets released into circulation and rapidly disassociates into alpha and beta dimers which are bound by haptoglobin. The Hgb/haptoglobin complex is transported to the liver. If haptoglobin is depleted, free Hgb circulates and is filtered by the kidney. Free Hgb is either reabsorbed by renal tubular cells or excreted as free Hgb in the urine.

3. Another site reported that
RBC destroyed in liver and spleen, by macrophages. 2 million destroyed per second.
Hb is released and iron is recovered and returned to bone marrow.</span>

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3 years ago