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- QUESTION 3 3.1. Regardless of the specificity and sensitivity of a test, if the test results cannot be reproduced, the value and usefulness of the test are minimal. Name and briefly discussthe three (3) factors that contribute to the variation between test results of assessing diagnostic and screening tests.QUESTION 5You are asked to recommend an antibiotic to treat potential pathogenicityt in an animal. Describe a method which will allow you to make this recommendation.QUESTION 24 Human immunodeficiency virus (HIV) is of interest to evolutionary biologists because all of the following, EXCEPT: a. Phylogenetics allow us trace epidemics and transmission pathways. b. Evolution of the virus has led to drug resistance and the need for multidrug treatments. c. Population demography and disease transmission can differ between populations. d. Resistant alleles are maintained in high frequency due to high selective pressure of the disease.
- QUESTION 10 Remdesivir is converted in vivo to CMP analog and then phosphorylated to CTP analog. a successful treatment for Ebola. There are more than 1 correct answers in the other choices. a potential chain terminator for the replication of RNA viral genomeQuestion 1. The nitrogenous base content of a sample of DNA was found to be 34% adenine. Determine the amounts of the other three bases in this sample.QUESTION NO. 1 A transition mutation A. occurs when a purine is substituted for a pyrimidine or vice versa. B. results from the insertion of one or two bases into the DNA chain. C. is most frequently caused by chemicals (like acridine) that intercalate into DNA. D. results from substitution of one purine for another or of one pyrimidine for another. E. always is a missense mutation QUESTION NO. 2 Degeneracy of the generic code denotes the existence of A. multiple codons for a single amino acid. B. codons consisting of only two bases. C. base triplets that do not code for any amino acid. D. different systems in which a given trip let codes for different amino acids. E. codons that include one or more of the unusual bases. QUESTION NO. 3 Replication A. requires that a phosphodiester bond of the incoming dNTP be hydrolyzed in order to be added to the growing chain. B. uses 5' to 3' polymerase activity to synthesize one…
- Question 24 pts When we are vaccinated against SARS-CoV-2, what happens? (select all correct answers) Group of answer choices a) Our adaptive immune system becomes primed to recognize the SARS-CoV-2 virus. b) Our DNA becomes modified. c) We will permanently have viral proteins in our cells d) Our cells will make a partial or complete viral protein, which our immune system will recognize as foreign. e) Memory cells will be ready for a new infection.Question 21>In 1668, Francesco Redi performed a series of experiments on spontaneous generation. He began by putting similar pieces of meat into eight identical jars. Four jars were left open to the air, and four were sealed. He then did the same experiment with one variation: Instead of sealing four of the jars completely, he covered them with gauze (the gauze excluded the flies while allowing the meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat.What hypothesis was being tested in the initial experiment with open versus sealed jars?A.The type of meat used affects the likelihood of spontaneous generation.B.Spontaneous generation can occur only if meat is exposed to air.C.Spontaneous generation is more likely during the long days of summer.D.Maggots do not arise spontaneously, but from eggs laid by adult flies.QUESTION 16 In Tipper's negative priming task, participants are ____________ to say the name of a probe object when that object was just previously _______________. a. slower; attended to b. faster; ignored c. slower; ignored d. faster; attended to e. none of the above
- Question 6 In the first part of the experiment, there were only a few colonies on the streptomycin positive plate. In the second part, there are a large number of colonies on the streptomycin positive plate that was inoculated with the antibiotic resistant strain. What is the most likely explanation for this difference? 1. The antibiotic resistant strain was composed of a large number of individuals with resistance to streptomycin 2. The exposure to streptomycin caused a mutation in a few individualsQUESTION 26 In a double-stranded DNA molecule, how are the sequences of each strand related to each other? A The sequences are identical. B The sequences are identical except that one strand has a U where the other strand has a T. C The sequences are the reverse compliment of each other and use the nucleotides, A, G, U, and C only. D The sequences are the reverse complement of each other.QUESTION 24 During lagging strand synthesis of DNA, Okazaki fragments are linked together by ___________. DNA polymerase I Primase Beta clamps DNA Ligase