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Natali [406]
3 years ago
12

Sickle cell disease is fairly common because __________.

Biology
1 answer:
german3 years ago
7 0

Answer:

The correct answer is - carriers of Sickel cell have advantages.

Explanation:

Sickle cell is a condition or disease that involves several other groups of disorders that affect the molecule that carries oxygen in RBC to cells all over the body. It leads to the atypical hemoglobin called hemoglobin S that distorts the RBC in the crescent or sickle shape.

The people with sickle cell trait that is that an individual is a carrier for the disease have one normal hemoglobin gene and other is hemoglobin S gen has an advantage and increase the chances of survival. It is determined that it has some kind of protective advantage against malaria.

Thus, the correct answer is - carriers of the sickle cell have an advantage.

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What tissue makes up most of the wood of a tree? A. primary xylem B. secondary xylem C. secondary phloem D. vascular cambium
Over [174]

<u>B. Secondary xylem</u> tissue makes up most of the wood of a tree.

<h3><u>What exactly is secondary xylem?</u></h3>

Secondary xylem is a sort of xylem produced by secondary growth. During initial growth, in contrast, the primary xylem develops. As a result, the secondary xylem is linked to the primary xylem by lateral growth as opposed to the vertical extension.

The kind of cambium that gives rise to each difference is another point of differentiation. The vascular cambium produces the secondary xylem, while the procambium produces the primary xylem.

Unlike trees and shrubs, non-woody plants lack secondary xylem. It gives such plants mechanical support by depositing lignin into their cell walls, thickening them. Compared to the major xylem, the secondary xylem is made up of tracheids and veins that are shorter and wider. In comparison to the primary xylem, it is also richer in xylem fibers.

Possible growth rings in the secondary xylem (or annual rings). Sapwood and heartwood are two differentiators of the secondary xylem in big woody plants.

Learn more about secondary xylem with the help of the given link:

brainly.com/question/703995

#SPJ4

4 0
1 year ago
How can an increase in carbon dioxide affect the temperature of a tropical ecosystem?
VARVARA [1.3K]

Carbon dioxide is normally slightly warmer than oxygen so if there is a sudden increase, it would naturally increase the temperature.

4 0
3 years ago
Weather balloons are often used to make measurements in which "sphere" A.Biosphere B.Exosphere C.Geosphere D.Cryosphere E.Atmosp
Ivahew [28]
I think it would be E.

3 0
3 years ago
Someone help me answer these questions, I’ll give brainlyyyy :))
Gnesinka [82]
1. The organisms at lower trophic levels have more consumable energy which provides the whale with more energy that organisms at other trophic levels.
2. Agree
3. Depending on the food chain, organisms can be on multiple trophic levels. For example, lions can be both a tertiary and secondary consumer.
7 0
3 years ago
Aerobic respiration happens in what cellular organelle?
kolbaska11 [484]
Aerobic respiration happens in the mitochondrion of eukaryotic cells.

Anaerobic respiration does not use oxygen gas and happens in one process after glycolysis called Fermentation.

The process used to make beer would be a kind of fermentation, Alcohol fermentation, I believe.
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3 years ago
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