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Ugo [173]
2 years ago
7

Single celled organisms are…. (select all that apply) A. Made up of one cell. B. Often microscopic and are limited in size. C. A

ble to meet all the challenges of life with in one cell. D. Able to differentiate to preform a specific job.
Biology
1 answer:
Dmitry [639]2 years ago
6 0

Answer:

Single celled organisms are made up of one cell, often microscopic and limited in size, able to meet all challenges of life with in one cell, and are able to differentiate to perform a specific job.

Explanation:

Singled celled organisms are usually, as the name suggests, single celled. To see one, you must use a microscope, and usually range anywhere from 0.5 to 10cm tall. A single celled organism can preform the necessary functions for life. They can eat, breathe, grow, and do other things other organisms with more than one cell.

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Proteins are important food nutrients. A technician working at a food company is interested in the nutritional content of seeds/
Vladimir79 [104]

Answer: Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.

Explanation:

Proteins are molecules found in the cells of all living organisms. A protein is composed of monomers called amino acids linked together by peptide bonds. To analyze proteins, a technique called SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis) is used. <u>This technique is used to separate proteins according to their electrophoretic mobility, depending on polypeptide chain length, molecular mass, post-translational modifications and other factors</u>. SDS (sodium dodecylsulfate) is an anionic surfactant compound that breaks non-covalent bonds in proteins, denatures them causing these protein molecules to lose their native conformation and provides the polypeptide with a negative charge that is proportional to the chain length (the number of amino acids) and, therefore, to the molecular mass of the protein. The electrostatic repulsion created by the binding of SDS to the protein is one of the causes of the protein losing its native conformation, thus eliminating the differences in conformation of the different proteins to be separated in the gel.

An electric current is applied to the gel where the proteins are seeded, causing the negatively charged proteins to migrate through the gel in the direction of the anode (positively charged region). Short proteins will move more easily and faster through the pores of the gel, while larger proteins will find it more difficult to do so. After a certain time, the proteins will have migrated according to their size (measured in kDa or kiloDaltons). After electrophoresis, the gel should be stained with Coomassie blue or silver stain, allowing visualization of the separated proteins. After staining, the different proteins will appear as distinct bands on the gel. In addition, the higher the amount of a protein, the more intense the color of its band will be.

Extract No. 1 shows three bands: 25, 30 and 35 kDa. <u>This means that it has three different proteins</u>, each with a different molecular weight. Extract number 2 shows two bands: 25 and 35 kDa. <u>It means that this sample has only 2 proteins. And being bands of higher intensity, we can say that there is more of each protein.</u>

Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.

8 0
2 years ago
Which of the following is a characteristic of the tidal region of an ocean
Lubov Fominskaja [6]
The defining characteristic of the intertidal zone is that it is submerged with water during high tide and exposed to the air during low tide. The zone can take many forms, from sandy beaches to rocky cliffs. It is common for the intertidal zone to change frequently, since it is constantly battered by crashing waves.
Hope this helped.
5 0
3 years ago
The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict abo
zysi [14]
Because these non native species can cause competition for the same food source as the native species thus making it harder for the native species to survive. Also the non native species could see the native species as food causing them to die out. As well as introducing new diseases that these native species don’t know how to defend themselves from
4 0
3 years ago
A structure in the leg of a human is found to carry oxygen-rich red blood cells. What else is most likely true about this struct
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8 0
3 years ago
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AlladinOne [14]
Yes because sucrose is sugar and it is transfered so we can eat it
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