HOW LIFE WORKS. BIOLOGY QUESTIONS AND CORRECT ANSWERS . GRADE A+

HOW LIFE WORKS. BIOLOGY QUESTIONS AND CORRECT
ANSWERS . GRADE A+



QUESTION: double helix - ANSWER-composed of two strands coiled around each other to form a sort of
spiral staircase




QUESTION: genetic information - ANSWER-information in DNA in the form of genes




QUESTION: gene - ANSWER-encoding information for a specific protein




QUESTION: replication - ANSWER-allows the genetic information from one DNA molecule to be coped
into that of another DNA molecule




QUESTION: mutation - ANSWER-a change in the genetic information of DNA




QUESTION: ribonucleic acid RNA - ANSWER-a type of linear polymer that serves as an intermediary
molecule for the specifying of an amino acid sequence of proteins from DNA

, QUESTION: central dogma - ANSWER-the flow of information from DNA to RNA to Protein




QUESTION: transcription - ANSWER-genetic information of a molecule is used as a template, or pattern,
to generate a molecule of RNA. ("transcription" is used to emphasize that both molecules use the same
language of nucleic acids")




QUESTION: gene expression - ANSWER-the production of a functional gene product




QUESTION: translation - ANSWER-a molecule of RNA is used as a code for the sequence of amino acids
in a protein ("translation" is used to indicate a change of languages, from nucleic acids to amino acids)




QUESTION: nucleotides - ANSWER-DNA's subunits composed of three subunits: a 5-carbon sugar, a
base, and one or more phosphate groups




QUESTION: purines - ANSWER-double ring structures with bases adenine (A) and guanine (G)




QUESTION: pyrimidines - ANSWER-single ring structures with bases thymine (T) and cytosine (C)




QUESTION: Nucleotides contain - ANSWER--a five-carbon sugar

-one or more phosphate group

-a nitrogen containing base