Biology 1001 Final Exam Questions with Correct Answers| Verified
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Course
BIOL 1001
Institution
BIOL 1001
It became apparent to Watson and Crick after completing their model that a DNA molecule could carry a vast amount of heredity information in its what? Sequence of bases
The two polynucleotide chain in a DNA molecule are attached to each other by what? Hydrogen bonds between bases
Inversions a...
Biology 1001 Final Exam Questions with Correct Answers| Verified It became apparent to Watson and Crick after completing their model that a DNA molecule could carry a vast amount of heredity information in its what? ✅Sequence of bases The two polynucleotide chain in a DNA molecule are attached to each other by what? ✅Hydrogen bonds between bases Inversions are movements of DNA from one chromosome to another. True or False? ✅False In semi -consvervative replication, a DNA molecule serves as a template for a new DNA molecule, which consists of either both parental strands of DNA or both newly synthesized strands of DNA. True or false? ✅False DNA posses what type or kinds of bases? ✅C,T,A, and G bases In the comparison of a DNA molecule to a twisted ladder, the uprights of the ladder are what? ✅Deoxyribose linked to phosphate Imagine that a DNA sequence of 5' A -C-G-T-A-C-G-T-3' is altered to 5' -A-C-G-C-A-C-G-
T-3'. This could happen as a result of what type of mutation or process? ✅Point mutation Why did scientists initially think DNA would be a poor candidate for the hereditary information within a cell? ✅DNA was shown to be made of only four different kinds of nucleotides Regarding the structure of DNA, the units that form the "uprights" of the DNA ladder and do not attach to the nitrogen bases are what? ✅Phosphate molecules Which is true about the accuracy of DNA replication? ✅The few errors made by DNA polymerase are usually corrected by repair enzymes Regarding the structure of DNA, which is covalently bonded to a nitrogen -containing base? ✅Deoxyribose What is the relationship among DNA, a gene, and a chromosome? ✅A chromosome contains hundreds of genes, which are composed of DNA DNA ligase is important in the replication process because it can bind together segments of DNA. True of False? ✅True In Griffith's experiments, what happened when heat killed S strain bacteria were injected into a mouse along with live R -strain bacteria? ✅DNA from the heat -killed S -strain was taken up by the live R -strain, converting them to S -strain and killing the mouse if a tRNA molecule that is specialized for the transfer of the amino acid valine has the anticodon CAG, it will couple with which codon? ✅GUC Which of the following has two polynucleotide strands? ✅DNA Which of the following contains four types of nucleotides but no uracil? ✅DNA The Barr body is the X chromosome in the cell that is expressed, while the other X chromosome is inactivated.True or False? ✅False What occurs in the nucleus? ✅Both transcription and replication of genetic material What is the site of protein synthesis? ✅Ribosome A "mini -gene" has the base sequence TACCCGTGCACG. If the T at the beginning of the sequence is deleted, what will be the consequence? ✅All of the codons after that point will be changed A sequence of three RNA bases can function as a(n) what? ✅Codon or anticodon Which of the following is TRUE regarding gene expression? ✅Different tissues within an organism express different genes How many bases are in a codon? ✅3 A tRNa molecule brings ___ to the ribosome during protein synthesis. What is the blank? ✅An amino acid Which of the following is NOT a means of regulating gene expression? ✅Deleting genes from cells in which they are not needed What does the process of Transcription do? ✅Synthesizing an RNA molecule using a DNA template In eukaryotes, a promoter that singles the beginning of the gene is made from what? ✅The bases TATAAA ( most commonly) and response elements
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