SCIN130 - Introduction to Biology with Lab Quiz 6, Answered latest Spring 26/27 | American Military University.

Quiz 5 - Results Attempt 1 of 1 2026 Attempt Score: 82 / 100 - 82 % Overall Grade (Highest Attempt) Question 1 What is a DNA mutation? Question options: a permanent change in the DNA sequence a change to the RNA sequence of an individual a method to keep all individuals of a species the same a mistake in the DNA sequence that can be fixed Hide question 1 feedback Feedback Great job. Question 2 Which statement best describes eukaryotic chromosomes? Question options: Single-stranded, circular Single-stranded, linearDouble-stranded, circular Double-stranded, linear Hide question 2 feedback Feedback Great job. Question 3 What are the three components needed for protein synthesis? Question options: DNA, nucleus, ribosome DNA, lysosome, exon mRNA, DNA, ribosome mRNA, tRNA, ribosome Hide question 3 feedback Feedback Great job. Question 4 Which nitrogenous base is present in RNA and not DNA? Question options: thymine guanine uracilcytosine adenine Hide question 4 feedback Feedback Great job. Question 5 How is it possible that each daughter cell during cell replication receives an identical copy of the DNA? Question options: DNA is not identical in every cell, so all daughter cells have different copies DNA is replicated following mitosis or meiosis, so is transferred after the new cells DNA is replicated individually in each new cell after meiosis and mitosis DNA is replicated during the synthesis phase of the cell cycle, prior to mitosis or m Hide question 5 feedback Feedback Great job. Question 6 Why does one strand of DNA replicate as a continuous strand, and the other in fragments? Question options: they are parallel, and DNA polymerase can synthesize in either directionthey are parallel, and DNA polymerase can synthesize from 5' to 3' they are anti-parallel, and DNA polymerase can only synthesize from 5' to 3' they are anti-parallel, and DNA polymerase can synthesize in either direction Hide question 6 feedback Feedback Great job. Question 7 Which portion of the primary RNA transcript is removed because it does not encode a functional protein? Question options: promoter spliced intron exon Hide question 7 feedback Feedback Great job. Question 8 Which two parts of the nucleotide covalently bond to each other to form the backbone of DNA? Question options: sugar and nitrogenphosphate and oxygen phosphate and nitrogen sugar and phosphate Hide question 8 feedback Feedback Great job. Question 9 How long would the peptide be that is translated from the mRNA sequence: 5'-AUGAUCGAUCACUAA-3'? Question options: 4 3 5 2 1 Hide question 9 feedback Feedback Amino acids are coded using a 3 nucleotide system, so for every 3 nucleotides, there is o to a peptide sequence. Review translation in Chapter 9. Question 10 DNA is said to be in what shape?Question options: a double corkscrew a triple twist a double helix a triple helix Hide question 10 feedback Feedback Great job. Question 11 Why are plants more difficult to make into transgenic species? Question options: mammals are regulated, plants are not the presence of chloroplasts, so photosynthesis is running presence of cell wall, preventing bacteria they are easier because they don't move Hide question 11 feedback Feedback Great job. Question 12 What is a plasmid with foreign DNA inserted referred to as? Question options:host DNA recombinant DNA restriction DNA foreign DNA Hide question 12 feedback Feedback Great job. Question 13 Gel electrophoresis separates charged molecules on the basis of what? Question options: shape and color size and charge contents and charge temperature and shape Hide question 13 feedback Feedback Great job. Question 14 What compound carries a gene from one organism into a bacterial cell? Question options: a plasmidan enzyme a nucleotide a promoter Hide question 14 feedback Feedback Great job. Question 15 What is a basic definition of cloning? Question options: creation of a perfect replica increasing the number of plants increasing the life expectancy of animals creation of a similar copy Hide question 15 feedback Feedback Cloning is the process of creating an exact replica, whether on a genetic or whole tissue and genetic engineering in Chapter 10. Question 16 What is an example of a genetically modified organism? Question options:a red apple with a gene from another apple cultivar a natural cross between zucchini and acorn squash a plant produced through traditional breeding mating of a horse and donkey to produce a mule Hide question 16 feedback Feedback Great job. Question 17 What is a technique used to rapidly increase the number of copies of specific regions of DNA? Question options: Gel electrophoresis Polymerase chain reaction Cell lysing DNA precipitation Hide question 17 feedback Feedback Great job. Question 18 The introduction of a non-mutated gene at a random location to cure a disease by replacing a protein is called what? Question options:transgenic organism reverse genetics gene therapy recombinant DNA Hide question 18 feedback Feedback Great job. Question 19 What do the different bands in the same lane of an agarose gel represent? Question options: different organisms similar genetic make up different size pieces links of protein Hide question 19 feedback Feedback In one lane of an agarose gel, there are different sized pieces of DNA from one sample. R Question 20 What is an example of a transgenic organism? Question options: mating of a horse and a donkey to produce a mulea traditional breeding project where red and green apples are crossed an heirloom tomato variety a tomato with a gene for freezing tolerance from fish Hide question 20 feedback Feedback Transgenic is the result of foreign DNA that is a different species being transferred by re Review cloning and genetic engineering in Chapter 10. Question 21 What are some of the oldest known organisms on Earth? Question options: archaea bacteria plant fungi bacteriophages protozoa Hide question 21 feedback Feedback Great job! Question 22 What are protozoans that derive their energy from chemicals in the environment as opposed to solar energy called? Question options:chemoheterotroph photoheterotroph photoautotroph chemoautotroph Hide question 22 feedback Feedback Review Biodiversity: Protists in the Weekly Lecture Lesson. Question 23 What process results in the production of identical individuals? Question options: intense cloning gene cloning therapeutic cloning reproductive cloning Hide question 23 feedback Feedback Great job! Question 24 Which type of stem cell can only become one specialized type of stem cell, depending on the origin? Question options:embryonic induced pluripotent somatic reproductive Hide question 24 feedback Feedback Great job! Question 25 In data measurement, what does precision refer to? Question options: The number of significant digits in the solution of a mathematical problem How close a measured value is to previous measured values Whether or not a measurement was performed correctly. How close a measured value is from a standard or established value Hide question 25 feedback Feedback Correct! Accuracy refers to how close a measured value is from a standard or establishe Question 26 What are qualitative data measurements? Question options: Measurements of numerical variables and are displayed as numerical valuesMeasurements of categorical variables and can be displayed as types or description Measurements that are appropriate for any type of variable Measurements that are appropriate for any experiment Hide question 26 feedback Feedback Correct! Qualitative data measurements are measurements of categorical variables – the answers questions like "what type?" Question 27 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)? Question options: 2.5 lbs / 2.2 lbs = 1.136 kg 2.5 lbs x (1 kg / 2.2 lbs) = 1.136 kg None of the above 2.5 lbs x (2.2 lbs / 1 kg) = 5.5 lbs Hide question 27 feedback Feedback Unit conversion is done correctly by multiplying the original number by a factor that is e case, because 1 kg is equal to 2.2 lbs, the factor (1 kg / 2.2 lbs) is equal to 1. That means multiply 2.5 lbs by this value, we haven't changed the value, just the units. Question 28 What is the relative length of the tobacco mosaic virus?Question options: 100 nm 250 nm 1000 nm 25 nm Hide question 28 feedback Feedback Great. Question 29 What is the approximate diameter of the Zika virus? Question options: 50 nm 500 nm 100 nm 1000 nm Hide question 29 feedback Feedback Great. Question 30 What is a virus that is transmitted from a vertebrate animal to humans? Question options:zoonic parasite vector host Hide question 30 feedback Feedback Great. Question 31 Which was the first virus to be described? Question options: HIV Adenovirus T7 TMV Ebola Hide question 31 feedback Feedback Great. Question 32 Which is the largest virus overall, when comparing relative sizes? Question options:Adenovirus Ebola Zika Influenza Rabies Hide question 32 feedback Feedback Great. Question 33 Which statement best describes prokaryotic chromosomes? Question options: Single-stranded, linear. Double-stranded, circular. Double-stranded, linear. Single-stranded, circular. Hide question 33 feedback Feedback Great job.