Why are red blood cells unable to replace damaged proteins

1 answer:

7 0

The sole reason why red blood cells are unable to replace damaged proteins is that red blood cells lack DNA and cell organelles such as the nucleus, ribosomes, and mitochondria which are crucial for protein synthesis, assembly, and repair. In other words, they lack both the information and the machinery for making or repair of proteins.

Due to lack of DNA and cell organelles, red blood cells cannot be able to satisfy the central dogma which summarizes synthesis of proteins as DNA → RNA → proteins.

DNA has the genetic information on how proteins should be made, RNA is responsible for transferring the information from DNA in the cell nucleus to the ribosomes in the cytoplasm, then translating or decoding this information, which results in the making of protein.

You might be interested in

What is the difference between monogenic & polygenic inheritance?

sergey [27]

The difference between a monogenic inheritance and a polygenic inheritance are the amount of alleles they depend on. A monogenic inheritance depends on only one single allele while a polygenic inheritance depends on multiple alleles. Monogenic refers to qualitative traits and polygenic refers to quantitative traits.

7 0

3 years ago

Use the drop-down menus to complete each sentence.

Svetlanka [38]

Answer:

- Eukaryotes are organisms that contain more than one cell with membrane-bound organelles and a nucleus.

- Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as prokaryotes.

Explanation:

According to their structural and functional complexity, organisms can be classified into eukaryotes and prokaryotes.

Eukaryotic organisms are formed by cells that have a true nucleus -where DNA is located- and specialized structures called organelles, with a system of endomembranes that compartmentalize the intracellular space. These organisms are usually pluricellular, given the ability of eukaryotic cells to group together to form tissues.
Prokaryotic organisms are single cells, lacking a nucleus - genetic material is scattered in the cytoplasm - and do not possess organelles. The prokaryotic cells that form these organisms are incapable of binding together, so they do not form tissues.

Some unicellular organisms are prokaryotic cells, like some parasitic microorganisms, such as amoebas.

3 0

2 years ago

Read 2 more answers

In Guinea pigs, short hair is dominant and long hair is recessive. A

larisa86 [58]

Answer:

a. S represents allele for short hair while s represents allele for long hair.

b. Ss (male) × ss (female)

c. 50% Ss, 50% ss

d. 3 long hair (ss), 3 short hair (Ss)

Explanation:

This question involves a single gene coding for hair length in guinea pigs. The allele for short hair (S) is dominant over the allele for long hair (s).

a. Letter "S" will represent the allele for short hair while letter "s" will represent the allele for long hair.

b. According to this question, a heterozygous male is crossed with a long-haired female. The genotype of the male guinea pig is "Ss" while that of the female is "ss". (see attachment for the punnet square)

c. The possible genotypes of the offsprings in this cross are: Ss and ss, each carrying 50% each as they are produced in a ½ Ss: ½ ss.

d. Since 50% of the offsprings will be both short haired and long haired, If they have six babies, 3 of them will be short-haired while 3 of them will also be long-haired.