DNA

Which of the following does cytosine pair with? a. Guanine b. Thymine c. Adenine d. a Pyrimidine

a. Guanine

What carries a gene from one organism into a bacteria cell? a. a plasmid b. an electrophoresis gel c. a restriction enzyme d. a polymerase chain reaction

a. a plasmid

During replication the DNA helix is maintained, but ________________ . a. the individual base pairs are "unzipped" by a specific enzyme b. during mitosis the helix is changed into a globular shape c. RNA assembles on the exposed bases d. only a single gene is replicated

a. the individual base pairs are "unzipped" by a specific enzyme

The original DNA template strand sequence is as follows: ACCTTAATAACC. A mutation in the DNA gives origin to the following sequence: ACCTTAAATAACC. What type of mutation is this? a. Deletion b. Insertion c. Point mutation d. Substitution

b. Insertion

Where does transcription take place in human cells? a. Nucleoid b. Nucleus c. Cytoplasm d. Nucleosome

b. Nucleus

DNA replicates by which of the following models? a. Conservative b. Semiconservative c. Dispersive d. None of the above

b. Semiconservative

A genetically modified organism (GMO) is _______? a. any bacteria b. an organism with an artificially altered genome c. a hybrid organism d. any agricultural organism

b. an organism with an artificially altered genome

A nucleotide is made of _______. a. sugar + phosphate b. sugar + phosphate + nitrogen base c. sugar + nitrogen base d. phosphate + nitrogen base

b. sugar + phosphate + nitrogen base

Where does translation take place in eukaryotic cells? a. Nucleoid b. Nucleus c. Cytoplasm d. Nucleosome

c. Cytoplasm

What is the correct sequence of steps in the central dogma? a. RNA->DNA->Protein b. RNA->Protein->DNA c. DNA->RNA->Protein d. DNA->Protein->RNA

c. DNA->RNA->Protein

Which of the following techniques allows for DNA fragments to be separated by size? a. DNA extraction b. Polymerase chain reaction c. Gel electrophoresis d. Cloning

c. Gel electrophoresis

Prokaryotes contain a _________ chromosome, and eukaryotes contain ________ chromosomes. a. single-stranded circular; single-stranded linear b. single-stranded linear; single-stranded circular c. double-stranded circular; double stranded linear d. double-stranded linear; double-stranded circular

c. double-stranded circular; double stranded linear

How long would the peptide be that is translated from this mRNA sequence: 5'-AUGGGCUACCGA-3'? a. 0 amino acids b. 2 amino acids c. 3 amino acids d. 4 amino acids

d. 4 amino acids

Transcribe the following DNA sequence (non template strand): 5'-ATGGCCGGTTATTAAGCA-3' a. 5'-ACGAATTATTGGCCGGTA-3' b. 5'-TACCGGCCAATAATTCGT-3' c. 5'-ATGGCCGGTTATTAAGCA-3' d. 5'-AUGGCCGGUUAUUAAGCA-3'

d. 5'-AUGGCCGGUUAUUAAGCA-3'

A strand of DNA with a nucleotide sequence of TAGCTAC will have a complementary strand with the sequence __________. a. CATCGAT b. ATCGAUG c. AUCGATG d. ATCGATG

d. ATCGATG

What is DNA proofreading? a. Instructions to the cell. b. Another word for translation. c. Another word for transcription. d. Correction of DNA mutations.

d. Correction of DNA mutations.

Control of gene expression in eukaryotic cells occurs at which level(s)? a. Only the transcriptional level b. Epigenetic and transcriptional levels c. Epigenetic, transcriptional, and translational levels d. Epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels

d. Epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels

If the sequence of a newly synthesized strand is ATGTACG, what is the sequence of the original parental strand? a. ATGTACG b. AUGUACG c. GCATGTA d. TACATGC

d. TACATGC

A molecule of RNA (ribonucleic acid) contains the bases _______. a. adenine, guanine, thymine, and uracil b. uracil, adenine, guanine, and adenosine c. thymine, adenine, guanine, and cytosine d. adenine, guanine, cytosine, and uracil

d. adenine, guanine, cytosine, and uracil

Your chromosomes are located _______ and they are made of ___________ . a. floating in the cytoplasm, lipids b. in the cell membrane, protein c. inside the mitochondria, genes d. inside the cytoplasm, protein e. inside the nucleus, DNA

e. inside the nucleus, DNA