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TLS Online TPP Program

#Question id: 3750

Which of the following facts did Hershey and Chase make use of in trying to determine whether DNA or protein is the genetic material?

#XL - Q Biochemistry

  1. DNA contains sulfur, whereas protein does not.

  2. DNA contains phosphorus, whereas protein does not.

  3. DNA contains nitrogen, whereas protein does not.

  4. DNA contains purines, whereas protein includes pyrimidines.

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TLS Online TPP Program

#Question id: 18000

#XL - Q Biochemistry

Two-dimensional polyacrylamide gel electrophoresis separates the proteins on the basis of
TLS Online TPP Program

#Question id: 18001

#XL - S Microbiology

Where in an angiosperm would you find a megasporangium? 

TLS Online TPP Program

#Question id: 18001

#XL - R Botany

Where in an angiosperm would you find a megasporangium? 

TLS Online TPP Program

#Question id: 18002

#XL - S Microbiology

What is the greatest threat to plant diversity? 
TLS Online TPP Program

#Question id: 18002

#XL - R Botany

What is the greatest threat to plant diversity? 
TLS Online TPP Program

#Question id: 18003

#XL - R Botany

In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? 
1. micropyle 2. style 
3. ovary 4. stigma