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STatiana [176]
4 years ago
15

Synapsis occurs after chromosomal dna has replicated. how many chromatids are involved in crossing-over of a homologous pair of

chromosome
Biology
1 answer:
ivann1987 [24]4 years ago
8 0
Synapsis happen after the chromosomal DNA has simulated. The 4 chromatids are involved in crossing over of a homologous pair of chromosomes. In addition, a chromatid is a strand of a double stranded chromosome. The law of segregation states that allele pairs dispersed yet gamete development and casually unite at insemination. 
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A hairdryer uses 1500 J of electrical energy in 1 second. The hairdryer changes 1300 J of this to useful thermal energy in 1 sec
Katarina [22]

200 J of energy is wasted by the hair dryer.

Steps

  • The hairdryer is provided with 1500 J of electrical energy per second
  • Of this 1500 J, 1300 J of energy is actually used and converted to useful thermal energy per second
  • The remaining energy, 1500 - 1300 = 200 J is dissipated

Dissipated energy

  • The energy that is not efficiently transported or changed is wasted energy.
  • We cannot create or destroy energy.
  • An employable type of energy is created through transformation.
  • Only a portion of energy that is changed or transferred can be done so in a way that is helpful.

Thus, 200 J of energy is wasted by the hair dryer.

Learn more about energy here:

brainly.com/question/166559

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Answer:

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<span>Pepsin is secreted in an inactive state, Pepsinogen, this is so that it doesn’t begin destroying the gastric gland(autodigestion). When it reaches the lumen it is activated by the hydrochloric acid. Cells in the wall secrete a mucus, which prevents it from eating away at the wall.</span>
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