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adoni [48]
3 years ago
14

What are some interesting facts about the rough er??

Biology
1 answer:
lyudmila [28]3 years ago
8 0
The ER comes in two different morphological forms: smooth ER and rough ER
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The mass of an atom is contained primarily in its _____. A. Electron Shell B. Nucleus C. Proton D. Size
igor_vitrenko [27]
The mass of an atom is contained primarily in its NUCLEUS.
An atom is made up of three sub particles, which are proton, neutrons and electrons. The proton and the neutrons are located in the nucleus of the atom while the electron  are located outside the nucleus where they move about in continuous motion around the nucleus. The proton and the neutrons, which are located in the nucleus have the same relative mass of 1, which has been estimated to be about 2,000 times bigger than that of the electron, which has a relative mass of 0.0005. This shows that, the mass of an atom is located primarily in its nucleus. <span />
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3 years ago
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Where do elctrons get their energy in photosytem I
Afina-wow [57]

Answer:

When light energy is absorbed by a chlorophyll molecule its electrons gain energy and move to higher energy levels in the molecule

5 0
3 years ago
Each cell in an individual's body carries certain molecules that tell the body they belong to that individual. those molecules a
Maksim231197 [3]

Answer:

MHC Markers

Explanation:

The function of MHC molecules is to display peptide fragments derived from pathogens on the cell surface for recognition by the appropriate T cells.

8 0
2 years ago
Why is radiometric dating of Carbon not a useful means to determine the age of the earth? What should we use instead of Carbon?
noname [10]

Answer:

Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that

Explanation:

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2 years ago
________________ are reactants in the process of cell respiration.
Neporo4naja [7]

Answer: The correct answer for the blank is-

B) Sugar and oxygen.

Explanation:

Cellular respiration can be described a metabolic process that includes the break down of organic molecule like glucose (a carbohydrate or sugar) to form carbon dioxide and water along with large amount of energy in the form of ATP ( adenosine triphosphates), which is used for driving various cellular processes.

Aerobic cellular respiration involves the presence of oxygen along with glucose.

Thus, sugar and oxygen, being the reactants in cellular respiration is the right answer.

5 0
3 years ago
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