في الأشنات يوجد تكافل بين طحالب وحيدة الخلية وبين فطريات.
I. ما هو تأثير كل واحد من الكائني...
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Biology, 22.06.2019 13:00
In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.
Answers: 3
Biology, 22.06.2019 20:00
What determines whether a particular cell is able to respond to a hormone?
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Biology, 22.06.2019 23:00
List the four types of organic compounds found in all living things and explain why they are important.
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