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elena-14-01-66 [18.8K]
3 years ago
15

What is usually the origin of a non-standard amino acid residue found in a polypeptide chain?

Biology
1 answer:
Mashutka [201]3 years ago
8 0

Answer:

The origin is a posttranslational modification of a standard aminoacid

Explanation:

There are 20 standard amino acids that can be found commonly in proteins. A non-standard amino acid is produced from an standard amino acid which suffered a chemical modification after it was incorporated in a protein chain, which is ussually called <em>posttraslational modification</em>. For example, γ-carboxyglutamic acid (Gla) is a non-standard amino acid that is formed from the standard amino acid glutamic acid (Glu). The γ-proton of glutamic acid is substacted and CO₂ is added. The reaction requires vitamin K as cofactor and it is catalyzed by a carboxylase. Gla has the ability of binding calcium and play an important role in blood coagulation.

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Passive expiration is achieved primarily by the
Nastasia [14]
Elastic recoil of the lungs.

Hope that helped!

-astroworld301
5 0
3 years ago
D) Describe Two different components of the cell that are essential for
vekshin1

Answer:

The two components that helps to maintain the homeostasis of the cell are 1  Buffer system 2 Membrane transport process

Explanation:

1 Buffer system Buffer system helps to maintain a constant PH in addition to small amount of acid or base .There are many buffer system present inside  our body

A Bicarbonate buffer system helps to maintain concentration of carbon di oxide, bicarbonate ion and Carbonic acid according to our body"s need.

B Phosphate buffer system

C Hemoglobin buffer system This buffer system helps too maintain normal O2/CO2 ratio of our body which is very much important of maintain our body"s homeostasis.

2 Membrane Transport process  Various ion channels of plasma membrane sych as Na+ K+ ATPase,Ca2+ATPase ,H+ ATPase helps maintain ionic homeostasis of our body.

8 0
3 years ago
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The al
Lerok [7]

Answer:

The parent's genotypes are:

Ddpp - tall, white parent

ddPp - dwarf, purple parent.

Explanation:

This question involves two different genes coding for height and flower color in pea plants. The alleles for tallness (D) and purple color (P) are dominant over the alleles for dwarfness (d) and white color (p) respectively.

According to this question, a tall plant with white flowers is crossed with a dwarf plant with purple flowers to produce the following proportion of offsprings: 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white.

Since some of the offsprings contain recessive alleles for both or either genes, the dominant traits of the parent is controlled by an heterozygous genotype. This means that the tall plant with white flowers has a genotype: Ddpp while the dwarf plant with purple flowers has the genotype: ddPp. In a cross between Ddpp × ddPp, 1/4 of each combination of alleles is produced in the offsprings (see punnet square in the attachment).

3 0
3 years ago
Develop a mind map representing the narrative of the historical development of technology and the impact of IKS throughout the h
My name is Ann [436]

Indigenous Information System (IKS) is the body of knowledge that communities have accumulated over many generations as a result of their interactions with the environment.

<h3>Indigenous Knowledge System (IKS): What is it?</h3>

The technological, economic, philosophical, educational, and governing systems are all included in the indigenous knowledge system.

Prior to the development of the contemporary scientific knowledge system, indigenous societies established their own knowledge, which is included in indigenous knowledge systems (IKS).

Acupuncture from China is an illustration of IKS. Through the preservation and wise use of biodiversity, it may significantly advance sustainable development.

There is a definite need to preserve these systems, acknowledge their worth, and stop their destruction in order to strengthen indigenous knowledge practices and cultures.

Learn more about knowledge on:

brainly.com/question/15518042

#SPJ1

4 0
2 years ago
What is polarity ? pls actually help me :)
Papessa [141]

Answer:

Polarity is the distribution of electric charge over the atoms joined by the bond.

8 0
3 years ago
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