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dolphi86 [110]
3 years ago
14

How are nucleotides linked together to form a polynucleotide chain? View Available Hint(s) How are nucleotides linked together t

o form a polynucleotide chain? In RNA but not DNA, a phosphodiester linkage connects the 2' carbon of one nucleotide and the 5' carbon of another. In DNA and RNA, a phosphodiester linkage connects the 3' carbon of one nucleotide and the 5' carbon of another. In DNA but not RNA, a phosphodiester linkage connects the 3' carbon of one nucleotide and the 5' carbon of another. In DNA and RNA, a peptide bond connects the 3' carbon of one nucleotide and the 5' carbon of another. Previous Answers
Biology
1 answer:
Maslowich3 years ago
8 0

The correct answer is: In DNA and RNA, a phosphodiester linkage connects the 3' carbon of one nucleotide and the 5' carbon of another.  

The phosphate of one nucleotide is covalently bound to the sugar of the next nucleotide in DNA molecule (or hydroxyl groups in phosphoric acid react with hydroxyl groups on 3' carbon atom of one sugar molecule (deoxyribose) and the 5' carbon atom of another sugar molecule (deoxyribose) to form two ester bonds). In RNA molecule linkage is between the 3' carbon atom of one sugar molecule (ribose) and the 5' carbon atom of another, (ribose).  

Hydrolysis of phosphodiester bonds is catalyzed by the action of enzymes phosphodiesterases.

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Animal and Plant Cell Organelles Use the drop-down menus to determine where these organelles can be found. Ribosome Endoplasmic
rjkz [21]

Answer:

  • Animal Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, small Vacuoles, Lysosomes, Mitochondria, Cell membrane, Cytoplasm.

  • Plant Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, Cell wall, Big Vacuole, Lysosomes, Mitochondria, Cell membrane, Cytoplasm, Chloroplasts.

Explanation:

                       <u>   Animal Cells                              Vegetable Cells</u>

Cell wall                          NO                                             YES

Vacuoles       YES, Small and more than ones     YES, Only one and big

Chloroplast                      NO                                        YES

Plasmatic membrane       YES                                            YES

Mitochondria                       YES                                         YES

Lysosomes                       YES                                           YES

Endoplasmic reticulum      YES                                           YES

Golgi apparatus                   YES                                           YES

Cytoplasm                            YES                                           YES

Ribosome                             YES                                           YES

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

However, they have some differences:

<u>Cell wall</u>: A rigid structure that provides support and protection.

  • Animal cells do not have a cell wall. They are only surrounded by the cell membrane, which is flexible, so they can adopt different shapes.
  • Plant cells have a wall, so their shape is usually prismatic and regular. The cell wall is composed mainly of cellulose.

<u>Chloroplast:</u> these are organelles that accumulate chlorophyll.

  • Animal cells do not have chloroplasts because they do not photosynthesize.
  • Plant cells have chloroplasts, and they are in charge of the photosynthesis process that allows plants to release oxygen. These organelles use solar light as the source of energy.

<u>Vacuoles</u>:

  • Animal cells have many and small vacuoles whose function is to store water, ions, and waste intracellular substances.
  • Plant cells have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity.

Other differences are:

The animal cell has centrioles, while the vegetable cell does not.

Plasmodium, chromoplasts, and glyoxysomes are present in the vegetable cell but not in the animal cell.

3 0
3 years ago
How about this question? its biologoy
EastWind [94]

Answer:

I don't see anything listed, provide an image or equation

Explanation:

3 0
3 years ago
PLEASE HELP
kakasveta [241]
Well first i just wanna say that life on mars has been discovered,not little green men but Bactria found on the surface and small traces of water have been found as well. some forms of life need little water to survive (like bacteria) but they still need water so yes there is water on mars the question is will we find it.
5 0
3 years ago
Hello i need help really badly. who can help me???
Alisiya [41]

Answer:

I can help you

Explanation:

3 0
3 years ago
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Describe 2 human actions that cause water pollution.
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Throwing waste in to water, or spilling anything in the water that's not supposed to be in the water
7 0
3 years ago
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