The hydrogen, ionic, and covalent bonds that stabilize the shape of a protein contribute to which level of structure of a protein?
A) primary B) tertiary C) secondary D) quaternary
Answer: B
You might also like to view...
During protein synthesis in eukaryotes, what happens during RNA splicing?
A. The product of translation, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. B. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature tRNA. C. The product of transcription, called the secondary transcript, is cut and some pieces are joined back together to form the mature mRNA. D. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. E. The product of transcription, called the primary transcript, is cut and all pieces are joined back together to form the mature mRNA.
During the initiation step of transcription, which molecule binds the promoter region of a DNA molecule?
A) DNA polymerase B) Reverse transcriptase C) RNA polymerase D) DNA primase E) Topoisomerase
Which of the following is considered the key innovation that started chordates along the evolutionary path that led to vertebrates?
A. An internal endoskeleton B. A skin covering the entire body to prevent desiccation C. An amniotic egg D. A flexible rod to which muscles are attached, which allowed lateral movement of the back E. A hard shell encasing the body
What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?
A. nuclear envelope B. nucleus C. nucleoplasm D. endoplasmic reticulum E. nucleolus