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Tanzania [10]
3 years ago
15

which of the following distinguishes a prokaryotic cell from a eukaryotic cell ? the presence of a nucleus, the presence of a ce

ll membrane, the ability to interact the environment, the ability to reproduce ?
Biology
1 answer:
Veseljchak [2.6K]3 years ago
4 0

Only eukaryotes have a nucleus...all the other answers are true for both euks and proks...remember that only eukaryotes have internal membranes.

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Comment on why do you think cells prefer to use carbohydrates as a source of energy before they use fats and proteins.
kompoz [17]

Answer:

This can be explained  based on structure, and on metabolisms of  carbohydrate.

Explanation:

Carbohydrate has a relatively simple structural composition than the  either protein or fatty acids. The C, H and Oxygen molecules are of  relatively fewer in number and few  chains than fats and protein.Thus  cells will spend less energy to break bonds(catabolisims) among these molecules during cellular respiration  pathways  to trap the energy.

In addition glucose the end products of carbohydrate did not need any processing before it enters glycolysis, Kreb's Cycle and oxidative phosphorylation pathways to generate energy for the cells.

Conversely, for protein to be used it has to be first deaminated(removal of amino acid) by the liver  before it enters glycolysis,while fats needs to  be broken down and undergo beta oxidation   with the long chains removed  before it can  form acetyl CoA. Therefore cells will prefer few steps, less endergonic  pathways of glucose than longer more endergonic amino acids  and fatty acid pathways.

Furthermore, glucose can be used in cellular respiration to  produce energy either aerobically or anaerobically, while fats can only be used anaerobically. Therefore, since cells usually prefer to thrive in aerobic conditions they  breakdown glucose easily during this period, and when lack of oxygen occurs they switched to anaerobic, Thus, the versatility of glucose to oxygen concentration makes glucose a better choice. Besides if fats was used anaerobically, ketone bodies build up which may be toxic to the cells.

4 0
3 years ago
Sarah and Jim are siblings, and they both have brown eyes. Their mom, dad, grandparents, uncles, aunts, and cousins have brown e
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Hayyyyy u lookin might smexy
lukranit [14]

Answer:

cool

Explanation:

just cool that's good for you.

8 0
3 years ago
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What are two body systems that are used when shooting an arrow and how are the used?
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The primary archery muscles of the shoulders and upper back

Explanation:

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2 years ago
4) Peter is viewing a prepared slide with the 40X objective. His view is
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Answer:

Peter is viewing a prepared slide with the 40X objective. His view is

shown below. Unfortunately, the label in the slide has been torn off,

so he is not sure what he is looking at. Based on his observation

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Yes, Peter will identify identify the organism as label would not deter its identification. Reason being that diagram without labeling would not nullify identification of my organism

Explanation:

6 0
3 years ago
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