BISC 160 Exam 3 Practice Tests 86 Questions with Verified Answers,100% CORRECT, Exams of Nursing

Download BISC 160 Exam 3 Practice Tests 86 Questions with Verified Answers,100% CORRECT and more Exams Nursing in PDF only on Docsity! BISC 160 Exam 3 Practice Tests 86 Questions with Verified Answers After transcription, you will always have... - CORRECT ANSWER an RNA In prokaryotes, a chromosome is __________ and in eukaryotes, a chromosome is _________ - CORRECT ANSWER circular, wrapped around proteins DNA polymerase reads the template for the lagging strand from __________ and reads the template for the leading strand from ____________ - CORRECT ANSWER 3'-5', 3'-5' Which statement about okazaki fragments is false? A. they use a template that is oriented from 3' to 5' B. they are synthesized from 5' to 3' C. they are synthesized as fragments of the lagging strand D. RNA polymerase builds a molecule to provide a 3'OH group E. Ligase links together the fragments - CORRECT ANSWER D in cervical cancers, the cancer cells have a mutated RB that causes cells to divide. The non-mutated form of RB must be a(n) ______________ because it normally ___________ cell division. - CORRECT ANSWER tumor suppressor gene; inhibits Correct order and location of events necessary to perform gene expression on the p53 gene? - CORRECT ANSWER Transcription in the nucleus; translation at ribosomes in the activity using poison frogs, the reason poison frogs can avoid poisoning themselves is because they have a ___________ mutation and that mutation ___________ the ion channel to open. - CORRECT ANSWER missense, will not cause Which of the following statements about DNA is false? A. it is right handed B. it contains thymine, adenine, guanine, or cytosine C. it has grooves of different size D. it can be single stranded E. when double stranded, the strands are antiparallel - CORRECT ANSWER D the direction of each of the two strands of DNA is determined by... - CORRECT ANSWER the hydroxyl group of the 3' Carbon In order to build a new strand of DNA, DNA polymerase uses the __________ to get the __________ it requires. - CORRECT ANSWER RNA primer, Hydroxyl group During replication, the leading strand... - CORRECT ANSWER does not require DNA ligase when a cell is in interphase, which of these processes does not occur? A. synthesis of the spindle B. transcription and translation C. DNA replication D. attachment of spindle to the kinetochore E. building of sister chromatids - CORRECT ANSWER D if a mutation that changes a G to a C occurs, the result would be a... - CORRECT ANSWER nonsense mutation transcription factors will not... - CORRECT ANSWER alter the structure of mRNA At cell cycle checkpoints, several proteins are used to determine whether a cell will divide. One constructively expressed protein is ___________ and an inducible gene is ___________ - CORRECT ANSWER RB, Cyclin DNA is replicated using endergonic condensation reactions. The energy for that reaction comes from... - CORRECT ANSWER dNTPs cell division is not used for what? - CORRECT ANSWER making proteins if a cell is able to move into mitosis, what has to happen? - CORRECT ANSWER translation of cyclin must be induced B. tRNA C. microRNA D. nRNA E. snRNA - CORRECT ANSWER D cancer is caused by _________ being over-active and ____________ being removed/absent. - CORRECT ANSWER oncogene, tumor suppressor mutation with no change in function - CORRECT ANSWER silent mutation with a new protein formed - CORRECT ANSWER missense mutation that produces stop codon - CORRECT ANSWER nonsense a molecular machine responsible for removal of introns in the RNA sequence - CORRECT ANSWER spliceosome steps of translation - CORRECT ANSWER initiation, elongation, termination Explain the EPA sites on rRNA - CORRECT ANSWER E-exit, P-polypeptide, A- binding to anticodon clownfish have diploid number of 48 chromosomes. how many chromosomes would each clownfish zygote have? - CORRECT ANSWER 48 before cell division, what process needs to take place? - CORRECT ANSWER DNA replication cytokinesis in plant cells - CORRECT ANSWER vesicles Cytokinesis in animal cells - CORRECT ANSWER cleavage furrow in order for a cell to go passed G1/S, _______ has to be phosphorylated by binding to _______ which is activated by __________. - CORRECT ANSWER RB, CDK, Cyclin if a cell going through G1/S is damaged, then ______ would act as an inhibitor activated by _______ - CORRECT ANSWER p21, p53 changes on a single nucleotide sequence - CORRECT ANSWER point mutations large changes on a chromosome - CORRECT ANSWER chromosomal mutations BCL-2 gene codes for proteins that ensure damaged cells undergo apoptosis if necessary. They contribute to preventing these damaged cells from dividing. This means BCL-2 would be a - CORRECT ANSWER tumor suppressor what are you not likely to find in metaphase? - CORRECT ANSWER nucleus which of the following can break hydrogen bonds in DNA? A. helicase B. heat C. RNA polymerase D. A and C only E. A, B, and C - CORRECT ANSWER E which strand will grow away from the replication fork? - CORRECT ANSWER lagging A strawberry at the grocery store is 8n=56. how many chromosomes would the egg of a strawberry have? - CORRECT ANSWER 28 Microtubules that form the mitotic spindle tend to originate from ________ and terminate in ________ - CORRECT ANSWER centrioles, kinetochores which type of molecule transfers information from mRNA to protein? - CORRECT ANSWER tRNA define gene - CORRECT ANSWER code for protein does mitosis or meiosis generate genetic diversity? - CORRECT ANSWER meiosis enzymes of DNA synthesis in order - CORRECT ANSWER primase, DNA polymerase, ligase where is the transcription initiation site located - CORRECT ANSWER right after the promoter an mRNA molecule with 360 codons. how many nucleotides would it have? - CORRECT ANSWER 1080 in an organism that has an alteration of generations life cycle, ___________ makes spores while _________ makes gametes. - CORRECT ANSWER meiosis, mitosis function of helicase - CORRECT ANSWER Unzips DNA function of SSBPs - CORRECT ANSWER keeps strands separated Function of RNA polymerase - CORRECT ANSWER add RNA primers, open 3-OH Function of DNA polymerase III - CORRECT ANSWER add nucleotides Function of DNA polymerase I - CORRECT ANSWER removes primase function of ligase - CORRECT ANSWER connects okazaki fragments asexual reproduction produces genetically identical individuals because - CORRECT ANSWER no meiosis or fertilization takes place what type of RNA is being converted into a protein in translation? - CORRECT ANSWER mRNA what are the two primary functions of DNA? - CORRECT ANSWER replicate and transcribe describe the relationship between mitosis and cancer - CORRECT ANSWER uncontrolled division