Answer:
Each B cell produces a single species of antibody, each with a unique antigen-binding site
Explanation:
Bonjour, je ne connais pas beaucoup le français, je suis donc traductrice. De mon point de vue, je suggère d'utiliser les informations dont vous disposez et de les utiliser sur le graphique. J'espère que cela a aidé.
Answer: E. Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.
Explanation:
The Hershey-Chase experiment, is an experiment that demonstrated that the genetic material of phage isn't protein but rather it's DNA.
Based on the information given in the question, the experiment will not work because amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.
Therefore, the correct option is E.
Answer:
Rock
Explanation:
Minerals are inorganic substances that occur naturally in nature and have a
a definite chemical composition and a crystalline structure while rocks may consists of one or many minerals together along with some organic remains due to which it may not look shiny and crystalline from outside.
Here, the two characteristics that enable the reader to identify the object given by grandmother to Emily as rock are –
a) Looks ugly on the outside (shows the presence of organic matter)
b) solid purple color with pretty crystals (crystalline structure inside)
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
