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kozerog [31]
3 years ago
14

Sickle cell anemia is a life-threatening disorder caused by a genetic mutation that alters a single amino acid in the beta-globi

n protein. Due to this mutation, a hydrophilic glutamic acid residue normally present on the outer surface of the protein is replaced by valine, a hydrophobic amino acid. This mutation does not substantially alter the tertiary structure of hemoglobin. Which of the following is a consequence of this mutation?
1.The mutation causes hemoglobin molecules to stick together due to the hydrophobic effect.
2. The mutation prevents the post-translational modification and activation of hemoglobin.
3. The mutation alters the folding of the hydrophobic core of hemoglobin.
Biology
1 answer:
arlik [135]3 years ago
5 0
2 is the answer I THINK look at other ones first
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From an evolutionary perspective mitochondria and chloroplasts are the result of what process
fomenos

<span>Mitochondria and chloroplasts are the result of the process called endosymbiosis. Mitochondria and the chloroplasts are originally from the prokaryotes. They have the ability to take up inside a large single cell organism which they help each other in order to produce energy for each other. Endosymbiosis, from the term symbiosis, the organisms that are symbiotic is living inside the other pair, just like how the mitochondria and chloroplasts responds to each other.</span>

4 0
3 years ago
When utilizing a KO mouse model, you want to see if introducing the dystrophin gene can rescue the DMD mouse model. Propose a me
-BARSIC- [3]
<h2>CRISPR/Cas9</h2>

Explanation:

CRISPR can be used to reintroduce dystrophin back into the KO mouse

  • CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats and is used to for gene editing
  • CRISPR/Cas-mediated genome editing has been shown to permanently correct DMD mutations and restore dystrophin function in mouse models
  • Germline editing by injecting zygotes with CRISPR/Cas9 editing component was first done in mdx mice by correcting the mutated exon 23
  • Postnatal editing of mdx mice was then achieved using recombinant adeno-associated virus to deliver CRISPR/Cas9 genome editing components and correct the dystrophin gene by skipping or deleting the mutated exon 23 in vivo
  • Germline and postnatal CRISPR/Cas9 editing approaches both successfully restored dystrophin function in the mice and same technique can be used for KO mouse model
4 0
3 years ago
Protists that play an important role in aquatic food webs are called
Sergeu [11.5K]
Plant like Protists - also called algae - autotrophs 
<span>Fungus like Protists - heterotrophs, decomposers, external digestion </span>

<span>From the above their role in the aquatic food chain is clear . </span>

<span>They perform their role as </span>
<span>1) producers = example = Plant like Protists - also called algae - autotrophs </span>

<span>2 ) consumers = example =Animal like Protists - also called protozoa (means "first animal") - heterotrophs </span>
<span>and </span>
<span>3) Decomosers = example ==Fungus like Protists - heterotrophs, decomposers, external digestion

</span>
3 0
3 years ago
Equal masses of granite, iron, copper, and lead are placed in sunlight. Based on specific heat, which material will warm up the
levacccp [35]

Answer:

Lead

Explanation:

The material that will warm up the fastest would be<u> lead.</u>

<em>The specific heat capacity of a substance is the amount of heat required to raise the temperature of a unit of the substance by one degree. The higher the specific heat capacity of a substance, the higher the amount of heat required to raise the temperature of the substance and vice versa.</em>

The specific heat capacity (in J/g °C) of granite, iron, copper, and lead are as follows:

Granite - 0.790

Iron    - 0.450

Copper - 0.385

Lead - 0.129

From the table, <u>lead has the lowest specific heat capacity, hence, it will be the fastest to get warmed when equal masses of all the substances are placed in the sunlight.</u>

3 0
3 years ago
The passing of specific traits that help an individual reproduce and survive is called what?
storchak [24]
I think its autotrophs and asexual 
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8 0
3 years ago
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