Genetic Code Answers
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What is the twisted ladder shape of the DNA called?
A
3-D modelB
nucleotidesC
double helixD
single strand2
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Before DNA was discovered, in which materials did scientists think the genetic material was stored?
A
proteinsB
carbohydratesC
nucleic acidsD
lipids3
What causes the differences in physical characteristics like hair color among people?
A
different versions of genesB
variations in DNA lengthC
different numbers of chromosomesD
variations in cell nucleus size4
Which best summarizes the scientific process that led to our current understanding of DNA?
A
Each scientist made an important, but unrelated, contribution.B
Scientists built on the previous work of other scientists to make new discoveries.C
Most of the discoveries were made by chance and did not depend on prior knowledge.D
The most important contributions were made within the same time period of the late 1800s.5
The diagram shows genetic structures.
A
chromosomeB
proteinC
geneD
DNA6
Which best compares DNA and RNA with regard to the process of protein production?
A
DNA transforms from a nucleic acid into a protein, and RNA remains a nucleic acid.B
RNA transforms from a nucleic acid into a protein, and DNA remains a nucleic acid.C
DNA leaves the nucleus during the process and RNA remains in the nucleus.D
RNA leaves the nucleus during the process and DNA remains in the nucleus.7
Which substances compose the backbone of DNA?
A
sugars and lipidsB
phosphates and amino acidsC
sugars and phosphatesD
lipids and proteins8
Which best describes the storage of the genetic code?
A
A gene is a segment of DNA, a condensed DNA molecule makes up a chromosome, a chromosome is inside a nucleus, and a nucleus is contained within a cell.B
A DNA molecule is a segment of a gene, a gene makes up a chromosome, a chromosome is inside a cell, and a cell is contained within a nucleus.C
A gene is a segment of a chromosome, a condensed chromosome makes up a DNA molecule, a DNA molecule is inside a nucleus, and a nucleus is contained within a cell.D
A DNA molecule is a segment of a chromosome, a chromosome makes up a gene, a gene is inside a cell, and a cell is contained within a nucleus.9
Which two scientists worked together to develop a three-dimensional model of DNA?
A
Miescher and WilkinsB
Crick and MiescherC
Franklin and WatsonD
Watson and Crick10
What are the building blocks of proteins?
A
amino acidsB
ribosomesC
tRNA moleculesD
chromosomesDid you find these answers helpful?
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