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o-na [289]
3 years ago
6

INFER Which of the following statements describes the structure of nucleotides that

Biology
1 answer:
never [62]3 years ago
4 0

Answer:

b., c., e. are the answers.

Purines have double rings, whereas pyrimidines have single rings.

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Rank from the first to the last steps to describe the correct order of events of erythrocyte death.
timama [110]

Answer:

1. erythrocyte becomes trapped in the sinusoids of spleen.

2. Spleen macrophages digest the erythrocytes.

3. Hemoglobin is broken down into amino acids, iron and bilirubin.

4. Iron ions and amino acids are recycled to make new hemoglobin in red bone marrow. Bilirubin is sent to liver for excretion.

Explanation

Aging erythrocytes are trapped in the sinusoids of the spleen, where they are digested by macrophages. Within the macrophage, hemoglobin is broken down into amino acids, iron ions, and bilirubin.

Iron ions or heme ion and amino acids then move through the blood to the bone marrow, where they are recycled and used to create new hemoglobin. Bilirubin travels with the help of the blood to the liver, where it is modified and then excreted.

thus, the correct order is :

1. erythrocyte becomesrapped in the sinusoids of spleen.

2. Spleen macrophages digest the erythrocytes.

3. Hemoglobin is broken down into amino acids, iron and bilirubin.

4. Iron ions and amino acids are recycled to make new hemoglobin in red bone marrow. Bilirubin is sent to liver for excretion.

8 0
3 years ago
As part of a purification technique, a mixture of small-protein hormones and peptides are placed in a gel and exposed to an elec
lidiya [134]

Answer:

The correct answer is "negative".

Explanation:

At pH 2 the net charge of the R groups of all the amino acids that comprise the peptide in question would be positive. This happens because of the high content of protons in a solution of pH 2, a value that is below the isoelectric point of all the amino acids. Since the peptide would have a positive net charge, it would migrate to the negative terminal of the gel because opposite charges attract each other.

7 0
3 years ago
Sewage in the ocean can cause and immediate effect in the ecosystem
Natalija [7]
By the Pollution of the ocean can kill plant and animal life near by and those who eat those plants and animals
4 0
3 years ago
Because digital signals do not depend on amplitude or frequency differences to communicate information, they are more vulnerable
Kazeer [188]

False

Electromagnetic interference happens less commonly with digital signals because they do not rely on subtle amplitude (signal strength) or frequency differences(cycles in a certain time) to communicate information. Digital signals are readable even with distortion generated from electromagnetic interference noise

3 0
3 years ago
Synthesis where water is removed and two compounds bond together
alukav5142 [94]
The correct answer is dehydration. Hope this helps.

7 0
3 years ago
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