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4-6-18 Biology Test

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jgeco's version from 2018-04-06 10:00

Section 1

Question Answer
What is a gene?A segment of DNA that codes for a particular protein, which turns in codes for a trait
What is an intron?Regions of DNA that do not code for proteins
How do nitrogen bases bond?Through Complementary Base-Pair Rule
How are the nitrogen bases held together?Through a hydrogen bond
What is the corresponding DNA order for this sequence? ~ A-T-G-C-A-TT-A-C-G-T-A
What is the corresponding mRNA order for this sequence? ~ A-T-G-C-A-TU-A-C-G-U-A
What are the differences between mRNA and DNA?RNA is - ribose, single strand, contains uracil rather than thymine
Why does mRNA have uracil rather than thymine?Thymine is too unstable
What are the sides of the DNA ladder made of?Alternating sugar and phosphate molecules
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Section 2

Question Answer
What is a codon?Three sequential nitrogen bases in the mRNA
Where are they found?In the mRNA
Who reads the codon?Ribosomes
What does the codon code for?Amino acid
What does a chain of amino acids make?Protein
Transcription isDNA to RNA process
Translation isRNA to protein process by reading RNA codes
Genes are expressed by makingproteins
Proteinsstructure, traits, and function
What are the steps of protein synthesis?DNA - RNA - Protein
What is the suffix for protein?~ase
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Section 3

Question Answer
What is meiosis?Type of cell division that produces gametes
What are gametes?Sex cells
What are somatic cells?Body cells
What does diploid mean?Normal/Original number of chromosomes for a somatic body cell
What does haploid mean? Half the number of chromosomes of an organism; occurs in gametes
What is mitosis?Cell division that occurs in somatic cells for growth, repair and replacement.
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