Blackboard->O HELP CENTERQuestion 14What are the primary differences often observed for mitosis in plant relative to animal cells?Plants typically skip the anaphase step in mitosis.B) Plants differ in details of telophase and some do not use centrioles to form the spindle system.Plants spend much longer in both metaphase and anaphase than do animal cells.D) There are no basic differences. The steps are almost identical in the two cases.Question 15Which of the following statements is NOT correct about DNA?More GC content means higher melting temperature.B) During unwinding, the viscosity of DNA increasesScanned with CamScannerBlackboard+ > x O BO HELP CENTERQuestion 15Which of the following statements is NOT correct about DNA?A More GC content means higher melting temperature.B During unwinding the viscosity of DNA increases.Absorption is maximum at OD260.D Boiling can separate the two strands of DNA.Question 16Human sperm and egg formation (gametes) differ from one another in the following ways EXCEPT:A) timing of gamete formationegg's chromosomes are shorter than sperm's.(c) polar body formationScanned with CamScannerBlackboardO HELP CENTERD amount of cytoplasm in each daughter cell formedQuestion 17Techniques used to identity the location of genes on a chromosome includeA) reassociation kineticsB) FISH© electrophoresisD X-ray diffraction analysis Blackboard+ > x U OO HELP CENTERQuestion 5The p53 gene product (the protein made from this gene) is involved in:Athe M checkpointB) bringing cells out of GOc the length of time a cell spends in interphaseD marking cells for programmed cell deathQuestion 6Which of the following is a reasonable estimate of the percentage of time spent in mitosis in a typical human cell98%Scanned with CamScannerO HELP CENTERD marking cells for programmed cell deathQuestion 6Which of the following is a reasonable estimate of the percentage of time spent in mitosis in a typical human cell cycle?98%B50%25%D 5%Question 7If Hershey and Chase found only 355 in the bacterial cells, they would conclude thatScanned with CamScannerO HELP CENTERQuestion 7If Hershey and Chase found only 3s in the bacterial cells, they would conclude thatA RNA is the genetic materialB) DNA and protein together serve as the genetic materialC DNA is the genetic materialD protein is the genetic material

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Blackboard OHELP CENTER Question 14 What are the primary differences often observed for mitosis in plant relative to animal cells? Plants typically skip the anaphase step in mitosis. Plants differ in details of telophase and some do not use centrioles to form the spindle system. Plants spend much longer in both metaphase and anaphase than do animal cells. There are no basic differences. The steps are almost identical in the two cases

Blackboard OHELP CENTER Question 14 What are the primary differences often observed for mitosis in plant relative to animal cells? Plants typically skip the anaphase step in mitosis. Plants differ in details of telophase and some do not use centrioles to form the spindle system. Plants spend much longer in both metaphase and anaphase than do animal cells. There are no basic differences. The steps are almost identical in the two cases

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 1ITD: Biologists have long been interested in the effects of radiation on cells. In one experiment,...

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Neurons are arrested in ________ of the cell cycle. a. G1 b. anaphase c. prophase d. S phase
1.Colchicine is a type of drug that inhibits the microtubule formation during the cell division. Let’s say that the onion root tip (a place where most of the plant’s cells divide) was submerge in colchicine solution. a. How do you think will be the cell’s respond? Will it continue its cell division? Why or why not? b. Let’s say that the cells in onion root tip treated with colchicine were not halted at spindle checkpoint. What do you think will happen during the division?
During M phase, how M-Cdk can trigger cohesin dissociation as well as Mad2 triggers mitotic checkpoint to delay metaphase to anaphase transition.
(Q) During M-phase of cell cycle, active M-Cdk phosphorylates several target proteins in order to regulate their activities. Identify TWO specific examples of such target proteins that are phosphorylated by active M-Cdk, and explain how each of them affects the cell (i.e. their respective biological significance). i) target protein phosphorylated: _______________________________ Biological Significance: ii) target protein phosphorylated: _______________________________ Biological Significance:
An active S-cdk (a type of CDK) will most likely _________ a. degrade cyclin b. promote apoptosis c. prevent the cell cycle d. promote the cell cycle e. prevent apoptosis
Q. Cyclins and CDK(inase) complexes regulate the cell cycle. Which of the following statements is true? A. Cyclins activate CDKs which remove phosphates from other proteins. B. Cyclins activate CDKs which add phosphates to other proteins. C. CDKs activate cyclins which remove phosphates from other proteins. D. CDKs activate cyclins which add phosphates to other proteins.
Which of the following need to be expressed to get past the G1 checkpoint and why? Select one: a. All the answers are correct and needed to progress the cell past the G1 checkpoint by expressing the enzymes necessary for DNA replication. Once these proteins are all expressed, the cell has moved past G1 into S phase. b. Primase because this enzyme is needed for DNA replication moving the cell from G1 to S. c. Cyclins because the accumulation of specific cyclins will turn on CDKs needed to turn on gene expression for proteins involved in DNA replication, moving the cell from G1 to S. d. DNA helicase because this protein is needed for DNA replication (part of S phase). So expression will help progress the cell from G1 to S.
Leland Hartwell, the third recipient of the 2001 NobelPrize in Physiology or Medicine, was acknowledged forhis characterization of cell cycle checkpoint pathways in the budding yeast S. cerevisiae. What is a cell cycle check-point pathway? When during the cell cycle do checkpoint
In a healthy cell, which of the following proteins will be activated in order to suppress cell division if the cell is not ready or should not divide? Select one: a. p53 b. cdk c. cyclin d. seperase e. mitogen
In your own words, explain how cancer cells differ from normal cells in regard to the following: Molecular controls of the cell cycle (include Cdk and Cdk/cyclin complexes, p53 gene/protein, Rb gene/protein in response)
All yhe cell in the human body has the same genome but have differences in their structure and function performed . what could be the reason ?
Kinetochores control the transition from metaphase to anaphase. Why is this statement true? Question 7 options: a) Anaphase will only begin after the M checkpoint where all the kinetochores and mitotic spindle have correctly attached. b) Anaphase will only begin after the M checkpoint where all the mitotic spindle have correctly formed. c) Kinetochores bind to microtubules in monotelic attachment to the sister chromatids. d) Kinetochores bind to microtubules in syntelic attachment to the sister chromatids. e) Kinetochores will halt at the M checkpoint to weaken the mitotic spindle formation, which is the event that initiates anaphase.