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Mrrafil [7]
2 years ago
15

. What does the endosymbiotic theory state about the origins of mitochondria and chloroplast?

Biology
1 answer:
Natasha_Volkova [10]2 years ago
3 0

Answer:

some of the organelles in eukaryotic cells were once prokaryotic microbes

C

Explanation:

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Other molecules that make up the cells are
Shalnov [3]
Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry.
8 0
4 years ago
Which enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction by adding nucleotides to the end of a growing DNA
Ivan

Answer:

DNA polymerase

Explanation:

DNA polymerase enzyme catalyses the reaction of adding nucleotide to growing complementary daughter strand of DNA in the direction of 5' → 3' during elongation in the process of replication. This process requires energy which is taken from nucleotides with three phosphate groups in their backbone similar to ATP (adenine triphosphate)

DNA Replication is when DNA multiplies and make exact copies of itself as part of gene transfer.

8 0
3 years ago
PLZ HELP 20 POINTS
valina [46]

Answer:

There are 8 electrons in the outer ring, and has to react with 8 or fewer electrons to form a stable molecule.

Explanation:

The outer-most orbits of  silicon contains a maximum of eight (8) electrons. It requires 8 of fewer electrons to form a stable molecule.

5 0
3 years ago
Similarities between mitosis and meiosis (as many as possible, I really need help)
vesna_86 [32]
Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions. The four daughter cells resulting from meiosis are haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell. 
so the similarities are: 
-ways for cells to divide 
-same number of chromosome as the original cell 
-both have the basic 5 phases 
-both processes go through chromosome replication 
-Meiosis II is similar to Mitosis 
I hope this is helpful :)))
have a nice day
4 0
4 years ago
Euglena is a unicellular organism with both chloroplasts and mitochondria. If scientists remove all of the chloroplasts from a E
katrin2010 [14]

Answer:

Euglena is a single celled organism. It belongs to Kingdom Protista. Euglena is  a eukaryotic organism that exhibit characteristics of both plants and animals. Some species of Euglena are photoautotrophs like plants which means they have ability to trap sunlight to produce food by the process of photosynthesis. Whereas, some species are heterotrophs like animals which means they obtain food by feeding on other organisms.

If scientists remove all of the chloroplasts from a Euglena, it will not be able to perform photosynthesis because chloroplast is an organelle that contains light sensitive pigments named as chlorophyll. Chlorophyll traps light energy from sun. Sunlight energy, along with carbon dioxide and water produces food in the form of glucose in plants and other photoautotrophs.    

4 0
3 years ago
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