Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)

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#Question id: 1241

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a common step in the opening/closing of ion channels by acetylcholine and rhodopsin binding to their receptors?

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#Question id: 852

#Unit 1. Molecules and their Interaction Relevant to Biology

.________ enzyme revealed the relation between the amino acid sequence of a protein and its conformation.

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#Question id: 5367

#Unit 8. Inheritance Biology

Following pedigree showing X link recessive disorder. Which of the following confirm a carrier female in a family?

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#Question id: 19802

#Unit 12. Applied Biology

The low expression level of cry genes seems to be due to the presence in them of sequences not commonly found in plant coding regions. Such as

(1) Localized A+T-rich regions resembling plant intrans 

(2) 18 potential plant polyadenylation signal sequences 

(3) 13 ATTTA sequences, which destabilize mRNA

(4) Codons that are rarely used in plants

Which of the above statements are correct?                

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#Question id: 3657

#Unit 3. Fundamental Processes

Mutations in excision repair genes or a translesion DNA polymerase cause: