BIOL 180 Quiz 5. Questions and Answers. American Public University

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Quiz 5 Part 1 of 5 - Chapter 9 39.0 Points Question 1 of 33 3.0 Points How long would the peptide be that is translated from the mRNA sequence: 5’- AUGAUCGAUCACUAA-3’?  A. 2  B. 3 ...  C. 4  D. 5  E. 1 Feedback:Great job. Question 2 of 33 3.0 Points How is it possible that multiple sites of DNA replication can exist inside the cell? BOIL180 -Quiz 5  A. there are not multiple sites of replication  B. genes are replicated quickly, so there are usually >4 of one gene at a time  C. during cytokinesis, DNA is replicated at twice the rate  D. there are multiple origins of replication Feedback:Great job. Question 3 of 33 3.0 Points The steps from DNA to mRNA are initiation, elongation and what?  A. origin  B. commencement  C. template  D. termination Feedback:Great job. Question 4 of 33 3.0 Points What is a DNA mutation?  A. a permanent change in the DNA sequence  B. a mistake in the DNA sequence that can be fixed  C. a change to the RNA sequence of an individual  D. a method to keep all individuals of a species the same Feedback:Great job. Question 5 of 33 3.0 Points What direction do the two strands of DNA run?  A. perpendicular  B. transversal  C. parallel  D. anti-parallel Feedback:Great job. Question 6 of 33 3.0 Points Which statement best describes prokaryotic chromosomes?  A. Double-stranded, linear  B. Single-stranded, linear  C. Single-stranded, circular  D. Double-stranded, circular Feedback:Great job. Question 7 of 33 3.0 Points Which portion of the primary RNA transcript is removed because it does not encode a functional protein?  A. promoter  B. exon  C. intron  D. spliced Feedback:Great job. Question 8 of 33 3.0 Points How is it possible that each daughter cell during cell replication receives an identical copy of the DNA?  A. DNA is replicated during the synthesis phase of the cell cycle, prior to mitosis or meiosis  B. DNA is replicated following mitosis or meiosis, so is transferred after the new cells are formed  C. DNA is replicated individually in each new cell after meiosis and mitosis  D. DNA is not identical in every cell, so all daughter cells have different copies Feedback:Great job. Question 9 of 33 3.0 Points What are the three components needed for protein synthesis?  A. DNA, nucleus, ribosome  B. mRNA, DNA, ribosome  C. DNA, lysosome, exon  D. mRNA, tRNA, ribosome Feedback:Great job. Question 10 of 33 3.0 Points What is the name of the model for DNA replication?  A. wavering  B. reactionary  C. semiconservative  D. progressive  E. conservative Feedback:Great job. Question 11 of 33 3.0 Points Why does one strand of DNA replicate as a continuous strand, and the other in fragments?  A. they are parallel, and DNA polymerase can synthesize in either direction  B. they are parallel, and DNA polymerase can synthesize from 5’ to 3’  C. they are anti-parallel, and DNA polymerase can synthesize in either direction  D. they are anti-parallel, and DNA polymerase can only synthesize from 5’ to 3’ Feedback:Great job. Question 12 of 33 3.0 Points Which nitrogenous base is present in RNA and not DNA?  A. adenine  B. guanine  C. thymine  D. uracil  E. cytosine Feedback:Great job. Question 13 of 33 3.0 Points Which two parts of the nucleotide covalently bond to each other to form the backbone of DNA?  A. sugar and phosphate  B. phosphate and oxygen  C. phosphate and nitrogen  D. sugar and nitrogen Feedback:Great job. Part 2 of 5 - Chapter 10 33.0 Points Question 14 of 33 3.0 Points What is a technique used to rapidly increase the number of copies of specific regions of DNA?  A. Gel electrophoresis  B. Cell lysing  C. Polymerase chain reaction  D. DNA precipitation Feedback:Great job. Question 15 of 33 3.0 Points What is a plasmid with foreign DNA inserted referred to as?  A. recombinant DNA  B. restriction DNA  C. host DNA  D. foreign DNA Feedback:Great job. Question 16 of 33 3.0 Points Why was Dolly a Finn-Dorset and not a Scottish Blackface?  A. the cytoplasmic donor was from a Scottish Blackface  B. the surrogate ewe was a Finn-Dorset  C. the nucleus came from a Finn-Dorset  D. enucleation occurred with a Scottish Blackface egg Feedback:Great job. Question 17 of 33 3.0 Points What is a basic definition of cloning?  A. creation of a perfect replica  B. increasing the life expectancy of animals  C. increasing the number of plants  D. creation of a similar copy Feedback:Great job. Question 18 of 33 3.0 Points What compound carries a gene from one organism into a bacterial cell?  A. a plasmid  B. an enzyme  C. a promoter  D. a nucleotide Feedback:Great job. Question 19 of 33 3.0 Points The introduction of a non-mutated gene at a random location to cure a disease by replacing a protein is called what?  A. reverse genetics  B. recombinant DNA  C. transgenic organism  D. gene therapy Feedback:Great job. Question 20 of 33 3.0 Points What do the different bands in the same lane of an agarose gel represent?  A. links of protein  B. different organisms  C. different size pieces  D. similar genetic make up Feedback:In one lane of an agarose gel, there are different sized pieces of DNA from one sample. Review Chapter 10. Question 21 of 33 3.0 Points Why are plants more difficult to make into transgenic species?  A. mammals are regulated, plants are not  B. presence of cell wall, preventing bacteria  C. the presence of chloroplasts, so photosynthesis is running  D. they are easier because they don’t move Feedback:Great job. Question 22 of 33 3.0 Points What is an example of a transgenic organism?  A. a tomato with a gene for freezing tolerance from fish  B. mating of a horse and a donkey to produce a mule  C. a traditional breeding project where red and green apples are crossed  D. an heirloom tomato variety Feedback:Great job. Question 23 of 33 3.0 Points What is an example of a genetically modified organism?  A. a red apple with a gene from another apple cultivar  B. a natural cross between zucchini and acorn squash  C. mating of a horse and donkey to produce a mule  D. a plant produced through traditional breeding Feedback:Great job. Question 24 of 33 3.0 Points Gel electrophoresis separates charged molecules on the basis of what?  A. temperature and shape  B. size and charge  C. contents and charge  D. shape and color Feedback:Great job. Part 3 of 5 - Lecture Material 12.0 Points Question 25 of 33 3.0 Points Why are some viruses species- or tissue-specific?  A. The inner RNA must be compatible with the host RNA  B. The inner DNA must be compatible with the host DNA.  C. The proteins in its outer shell must be able to interact with host cellular proteins.  D. The RNA must first be added to the nucleus of the host, then added to the cell Feedback:Great job. Question 26 of 33 3.0 Points What are protozoans that derive their energy from chemicals in the environment as opposed to solar energy called?  A. photoautotroph  B. chemoautotroph  C. chemoheterotroph  D. photoheterotroph Feedback:Great job! Question 27 of 33 3.0 Points What are some of the oldest known organisms on Earth?  A. plant fungi  B. protozoa  C. arahae bacteria  D. bacteriophages Feedback:Great job! Question 28 of 33 3.0 Points What process results in the production of identical individuals?  A. therapeutic cloning  B. gene cloning  C. reproductive cloning  D. intense cloning Feedback:Great job! Part 4 of 5 - Part 3: Lab Lecture Material 12.0 Points Question 29 of 33 3.0 Points How many significant figures does 0.105 have?  A. 1  B. 3  C. 2  D. 4 Feedback:Correct! The “1” and “5” are significant digits, so, the “0” between them is also significant. Question 30 of 33 3.0 Points What are qualitative data measurements?  A. Measurements of categorical variables and can be displayed as types or descriptions  B. Measurements that are appropriate for any experiment  C. Measurements that are appropriate for any type of variable  D. Measurements of numerical variables and are displayed as numerical values Feedback:Correct! Qualitative data measurements are measurements of categorical variables – they provide data that answers questions like “what type?” Question 31 of 33 3.0 Points Which common piece of lab equipment is used to measure temperature?  A. Scale  B. Thermometer  C. Ohmmeter  D. Beaker Feedback:Correct! A thermometer is a device that is used to measure temperature. Question 32 of 33 3.0 Points An unknown substance is measured to be 2.5 lbs. Which is the correct way to convert this mass in pounds (lb) to kilograms (kg)?  A. 2.5 lbs x (1 kg / 2.2 lbs) = 1.136 kg  B. 2.5 lbs x (2.2 lbs / 1 kg) = 5.5 lbs  C. 2.5 lbs / 2.2 lbs = 1.136 kg  D. None of the above Feedback:Unit conversion is done correctly by multiplying the original number by a factor that is equal to one. In this case, because 1 kg is equal to 2.2 lbs, the factor (1 kg / 2.2 lbs) is equal to 1. That means that then when we multiply 2.5 lbs by this value, we haven’t changed the value, just the units. Part 5 of 5 - Part 5 - 1 Question 4 points - 1 question 4.0 Points Question 33 of 33 4.0 Points What is the central dogma of genetic information?  A. proteins code for DNA and RNA  B. RNA stores our genome for safety  C. DNA encodes RNA, which in turn encodes protein  D. DNA produces proteins directly Feedback:Great job [Show More]

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