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Setler79 [48]
2 years ago
6

Explain how the 3’ and the 5’ end of the DNA molecule affects DNA replication.

Biology
1 answer:
Fed [463]2 years ago
5 0

Answer:

The DNA is read in the 3' to 5' direction but copied in the 5' to 3' direction

The new strand will be like the  reverse of the template strand

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(a) What cell structures best reveal evolutionary unity?
xeze [42]

Answer:

The correct answer will be-

1. Evolutionary unity-  DNA

2. specialized cellular modifications- plant cells have chloroplasts and large central vacuole.

Explanation:

<u>Case I </u>

Evolutionary unity is a concept which explains that all the organisms possess some common structure or universal structure or molecules.

The best characterized evolutionary molecule is DNA molecule which took the role of genetic material in past and is passed on to the daughter cells and still is made up of the same components which are a five-carbon sugar, four types of nitrogenous bases and a phosphate group. This DNA molecule is present in almost every organism except for a few viruses.

<u>Case II </u>

The specialization of the cellular components depends on the function a cell has to perform which became established in the population. The plant cells depended on the sunlight to prepare food for themselves which was done by the chloroplast organelle which is absent in the animal kingdom.

7 0
3 years ago
If you were conducting this experiment in the real world, what might be some possible sources of error in the experiment? EXTRA
Soloha48 [4]
Something could blow up or sum
7 0
3 years ago
What would indicate that a bacteria species that is successfully stained purple by a gram stain?
goldfiish [28.3K]

Answer:

Gram positive; Contain thick mesh wall of peptidoglycan in cell wall.

Explanation:

  • Gram staining technique is used to separate the gram positive and gram negative bacteria on the presence or absence of thick layer of peptidoglycan in cell wall.
  • If a bacteria contain thick layer of peptidoglycan in cell wall it will retain the primary stain crystal violet (purple) and known as gram positive bacteria.
  • If bacteria don't have thick layer of peptidoglycan in cell wall the stain will wash out and it will give the pink color known as gram negative bacteria.
  • Peptidoglycan is glycoprotein or Glucose+Protein.

5 0
3 years ago
To test the of a beef roast, insert the clean and sanitized probe of the thermometer:
balandron [24]

Answer:

lqkjlkfjskdjlfkjlksjdfklsjdf

Explanation:

fasdnjkfaflksdj

3 0
3 years ago
Human activity can be very disruptive to an
leonid [27]
Secondary succession i think! i’m not sure though.

secondary succession: animals recolonize after a disturbance such as a fire/destruction of their habitat (deforestation)

primary succession: devastation begins in a lifeless area.

in this case, the forest had living organisms, therefore, i don’t think it can be primary.
4 0
2 years ago
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