PET Scans Are Used to Study Brain Activity While CT

question 38

True/False

PET scans are used to study brain activity while CT scans are utilized to examine brain structures.

---

Definitions:

RNA

Ribonucleic acid. Nucleic acid with roles in gene expression. Most are single-stranded chains of ribonucleotides (adenine, guanine, cytosine, and uracil). See messenger RNA, transfer RNA, ribosomal RNA.

Protein

Organic molecule that consists of one or more polypeptides.

Initiator tRNA

A special type of transfer RNA that begins the process of translating a mRNA molecule to a protein by carrying the first amino acid of the protein.

mRNA

Messenger RNA, a single-stranded RNA molecule that conveys genetic information from DNA to the ribosome, where proteins are synthesized.