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vodomira [7]
2 years ago
9

Sickle-cell anemia results from a point mutation in the HBB gene. The mutation results in the replacement of an amino acid that

has a hydrophilic R-group with an amino acid that has a hydrophobic R-group on the exterior of the hemoglobin protein. Such a mutation would most likely result in altered
Biology
1 answer:
jekas [21]2 years ago
3 0

Answer: protein structure

Explanation:

In Sickle-cell anemia, the gene sequence of hemoglobin is changed in its sixth position due to the substitution of glutamate with valine.

So, since glutamate, an amino acid soluble in water due to its hydrophilic side chain is substituted with valine, an amino acid that has a hydrophobic side chain insoluble in water or bloodstream; the resulting hemoglobin protein is altered in structure (sickle shaped) and unable to bind and transport oxygen efficiently to the various body parts.

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In the Calvin cycle more atp than nadph is used how is this difference made up
Veseljchak [2.6K]

Answer:

Explanation:

The detailed description of photosynthesis is that chlorophyll a becomes oxidized chlorophyll a after being irradiated, and the water in the thylakoid is oxidized by oxidized chlorophyll a to form oxygen and hydrogen ions, and hydrogen ions pass through the class. The ATP synthase on the capsule membrane passes through the membrane into the chloroplast matrix, where it provides a certain chemical potential (ie, an energy produced from a high concentration to a low concentration), and then ADP and Pi on the membrane. Will get energy to form ATP; and NADPH+ is the front chlorophyll a is oxidized by light to release high-energy electrons e, e will be transferred to NADP+ (oxidized coenzyme II), the photolysis of the front water does not produce hydrogen ions? This led to the combination of NADP and H+, which became NADPH.

Next, their use, in front of the photoreaction, in the dark reaction, CO2 will react with the five-carbon compound in the chloroplast matrix, fixed to the formation of a three-carbon compound (one C in CO2, five C in five-carbon compound, Two three-carbon compounds are formed, and then ATP and NADPH supply hydrogen, respectively, and then return to ADP+Pi and NADP+, and the reduced three-carbon compound becomes organic (mostly sugar) and becomes The five-carbon compound will react with CO2 again, which is the Calvin cycle.

<em>Genetic mutation is an important factor that contributes to the pathogenesis and development of Alzheimer’s disease (AD). The genetic factors studied include the dominant mutations of genes encoding amyloid-β precursor protein (APP), presenilin 1 (PSEN1), and presenilin 2 (PSEN2). Additionally, more and more genes have been found to be potentially associated with AD, such as apolipoprotein E (APOE), glycogen synthase kinase 3 beta (GSK3B), dual specificity tyrosine-phosphorylation-regulated kinase 1A (DYRK1A), and Tau. Although many studies on the treatment of AD have not been successful, gene therapy is still considered as a potential way against AD, and some gene-therapy-based therapeutics have entered the clinical trial stage. Existing strategies for gene therapy against AD include gene inactivation, genetic modification, and immunoregulation, etc.</em>

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8 0
2 years ago
Two species of spiny mice compete for the same food source. One species of spiny mice feeds on insects during the day, while a s
Mandarinka [93]

Answer:

resource partitioning

Explanation:

Based on the scenario being described within the question it can be said that this is an example of resource partitioning. This term refers to when a species divides the limited resources in order to avoid competition within it's environment. Such as the two species of mice are doing by feeding in on the same resources at different times in order to avoid competition and conflict between each other. Thus allowing them to co-exist within the same environment.

3 0
3 years ago
The pictures below show a cave and a geyser.
Talja [164]
I think the correct answer from the choices listed above is option C. The statement that is correct about  the cave and geyser would be that the <span>cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated. Hope this answers the question.</span>
5 0
3 years ago
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1) Among the terrestrial planets
Fittoniya [83]

Answer:

2. along the gas planets

6 0
3 years ago
Put these events in the correct chronological order from earliest to latest
Tomtit [17]

The following events are provided;

A.The height of the civil rights struggle in the United States

B.The Civil War

C.The Great Depression

D.The first appearances by the Fisk Jubilee Singers


The answer is; B, A, D, C

  • America civil war occurred in 1861
  • The height of the civil rights struggle in the United States was in the 1870s
  • The Great Depression occurred in 1929
  • The first appearances by the Fisk Jubilee Singers were in 1871

6 0
2 years ago
Read 2 more answers
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