Cell Cycle and Cell Division Questions and Answers

Row 1 2 3 4 Formation Formation Growth of of Egg of Sperm Embryo mitosis mitosis meiosis mitosis meiosis mitosis meiosis mitosis meiosis meiosis meiosis mitosis row 4 Which row in the chart indicates the correct process for each even indicated row 2 row 1 row 3

True or false Nondisjunction occurs only in meiosis I O True False

O True O False Question 7 Which of the following conditions leads to maximal expression of the lac operon O Lactose is present and glucose is absent in the medium O Both lactose and glucose are prese in medium O Lactose and glucose are absent in the medium and translating all coding DNA regardless of environmental condi OF

5 Identify the Phases of Meiosis A B and C 15 pts

1 REVIEW PACKET 21 Label the cell structures in the following eukaryotic cell diagrams Identify the cell as a plant cell or animal cell Plant OR Animal Cell 22 Complete the chart for mitosis and meiosis Type of cells produced Chromosome number How do they compare to original parent cell Haploid or diploid Mitosis Plant OR Animal Cell 23 Identify each of the following images as the proper stage of mitosis Meiosis

What type of chromatin is considered to be transcriptionally inactive all the time O Constitutive heterochromatin Facultative heterochromatin O Euchromatin

A researcher measured the temperature at which two different samples of double stranded DNA denature separate into single strands Sample 1 denatured at a significantly lower temperature than sample 2 did Based on the data the researcher claims that the DNA in sample 1 is composed of a higher percentage of adenine and thymine than the DNA in sample 2 Which of the following best supports the researcher s claim The bonds between adenine and thymine are covalent bonds which require less energy to disrupt than those between cytosine and guanine Adenine thymine pairs denature at a lower temperature because they have fewer hydrogen bonds between them than guanine cytosine pairs do Adenine thymine pairs require less energy to separate because both are double ring bases Guanine cytosine pairs require more energy to separate because one is a single ring molecule and one is a double ring molecule 84 F Mostly cloudy

4 Which statement is false about allosteric regulation A Cellular response is faster with allosteric control than by controlling enzyme concentration in the cell B It is usually the mode of regulation for the last step in reaction pathways since this step produces the final product C Allosteric modulators bind non covalently at sites other than the active site and induce conformational changes in the enzyme D The regulation usually is important to the conservation of energy and materials in cells 24

What second messenger stays in the membrane after cleavage of PIP2 O a phospholipase C a Ob 1 4 5 trisphosphate OC diacylglycerol d phosphatidylinositol 4 5 bisphosphate Oecyclic adenosine monophosphate

What is NOT a feature of second messengers Oa The signal may be amplified significantly in the generation of second messengers b They are able to diffuse easily to other compartments of the cell C They are able to diffuse easily to the nucleus Od They alter the tertiary or quaternary structure of the receptor Oe They change in concentration in response to environmental signalo

Draw the orbital diagrams of the following compounds LiF KF NaCI MgO Li O Na S BeF What is the hydrogen bond How does the strength of this bond compare with the strengths of ionic and covalent bonds What common inorganic molecule forms hydrogen bonds with itself Diagram how the hydrogen bonds are formed among these molecules What is an ion What is a cation Give two examples What is an anion Give two examples Why is the hydrogen ion often called a proton Molecular model kits are available in the laboratory to build models of the atomic structures of covalently bonded molecules Each colored ball represents an atom and the hours in the atom represent covalent bonding sites For example a black ball represents an atom of carbon Carbon needs four electrons in its outermost shell to reach stability Thus the carbon atom black ball has four holes for four covalent bonding sites Construct models of the following inorganic molecules using the molecular model kit Refer to your text for help When you are finished building each molecule have the instructor initial below and then draw the orbital and structural diagrams of the model in the space provided Do not attempt to draw the molecule without having first made a model of it If you have difficulty please ask your instructor for help 1 H 2 H O 3 NH 4 CH 5 0 6 CO Explain why CO and CH are not considered organic List and briefly explain the unique properties of water in terms of its importance to living systems Explain why water is polar molecule

In prokaryotes where does the Citric Acid Cycle occur Cytoplasm Rough ER Mitochondria Plasma membrane

A cell membrane is composed of phospholipids with their turned in towards each other and their turned out A phosphates C fatty acids B heads D tails

When during the cell cycle w Select all that apply Marks wi

In the image below what is the value of n in the cell on the left PROCESS NONDISJUNCTION First melctic division Second meiotic division 2n 4 Homologs fail to separate 1 Melosis I starts normally Bivalents line up in middle of cell Copyright 2019 Pesson Canada Inc Select one O a 8 O b 2 O c 4 O d 1 2 Nondisjunction occurs with one set of homologs 3 Sister chromatids separate normally melogis II n 1 n 1 D Figure 13 13 Nondisjunction Leads to Gamotos with Abnormal Chromosome Numbers If homologous chromosomes fail to separato during meiosis the gametes that result will have an extra chromosome or wlack a chromosome Nondisjunction can also occur during meiosis Itif sister chromatids fail to separate 4 Aneuploidy results All gametes have too many or too few chromosomes

UTFIT A parent cell has 5 homologous pairs During meiosis L a non disiunction eve

Which statement about the cell membrane is true OIt contains cellulose and sugars that are involved in communication OIt is present in animal cells only It is rigid and elastic for supporting the cell s shape O It prevents harmful substances from entering a cell

You cross a true breeding white buffalo to a true breeding black buffalo All the F1 are brown You suspect that the white phenotype is caused by a gene that is recessively epistatic to black and brown P F1 If an F1 brown buffalo is crossed to a white tester homozygous recessive how

QUESTIONS The illustration below shows the changes in the membrane p channels to be inactivated 40 B

A plant that is dioecious could also have perfect flowers 1 True 2 False

Classifying a flower as imperfect depends on what O 1 missing sexual parts O2 flower shape O 3 where the flower grows 4 missing petals O 5 how often the flower blooms

MMX The diagram above shows homologous chromosomes during prophase I of meiosis Which of the following correctly describes the process being illustrate mutation in which the DNA content of the gene is altered crossing over in which alleles are exchanged segregation of sister chromatids C D A B condensation and segregation of alleles

e viruses alive The scientific debate continues Viruses exhibit some characteristics of life but others are missing e MOST obvious reason why scientists still refer to viruses as non living is that they B do not change over time do not contain any genetic material are much smaller than anything alive are not composed of one or more cells

Use the chart below to answer the question Student Comparisons of Meiosis and Mitosis Student Outcome of Meiosis Outcome of Mitosis 1 two diploid cells four haploid cells two diploid cells four haploid cells 2 3 4 Which student correctly compared the outcomes of meiosis and mitosis A two haploid cells two diploid cells four haploid cells four diploid cells B Student 1 Student 2

Parents can pass on chromosomes to their children that are different than their own when the new gene combinations are created by crossing over of sister chromatids during mitosis O crossing over of homologous chromosomes during mitosis crossing over of sister chromatids during meiosis O crossing over of homologous chromosomes during meiosis

6 c Interphase before S phase Prophase 2 of the simulation sketch the cell at the following stages Anaphase Interphase after S phase Metaphase Telophase Would the daughter cells have a different set of chromosomes if you had lined them up in a different order for metaphase b Briefly describe how mitosis helps ensure that daughter cells are genetically identical and hav the same number of chromosomes as their parent cells

4 Complete the table for fermentation Type of fermentation of ATPs produced Organisms that use it End products chemicals

le 4 Mitosis in Cancerous Phase of Mitosis Interphase Prophase Metaphase Anaphase Telophase TOTAL Chicken Stomach Cells Total of of Cell Cells Cycle 424 50 12 3 11 500 100 Time min 448 min

Drag and drop the stages and components of meiosis to their correct description Proteins that form a complex that seals sister chromatids together at their centromeres until Anaphase Il of meiosis Union of two haploid cells from two individual organisms Brief period of rest between meiosis I and meiosis II

Drag and drop the terms to complete the events occurring in meiosis 1 In meiosis the first round of nuclear division separates 2 During meiosis variation in the daughter nuclei is introduced because of chromatids chromosomes tetrads homologs crossover and the second like mitosis separates in prophase I and random alignment of into individual at metaphase I

Drag and drop the stages of mitosis and its components to match with their description Definition Apparatus composed of microtubules that orchestrates the movement of chromosomes during mitosis Stage of mitosis during which the nuclear membrane breaks down and mitotic spindle fibers attach to kinetochores Stage of mitosis during which chromosomes condense and the mitotic spindle begins to form Refers to a cell that is performing normal cell functions and has not initiated preparations for cell division Second or synthesis stage of interphase during which dna replication occurs Stage of mitosis during which chromosomes arrive at opposite poles decondense and are surrounded by a new nuclear envelope Prometaphase Quiescent Prophase Telophase Mitotic spindle S phase IITTEI Term

Drag and drop the components of cell cycle to their corresponding category Definition Stage of mitosis during which sister chromatids are separated from each other Ordered series of events involving cell growth and cell division that produces two new daughter cells Structure formed during plant cell cytokinesis by golgi vesicles forming a temporary structure phragmoplast and fusing at the metaphase plate ultimately leads to the formation of cell walls that separate the two daughter cells Rod like structure constructed of microtubules t the center Constriction formed by an actin ring during cytokinesis in animal cells that leads to cytoplasmic division Proteins that help sister chromatids coil during prophase each animal cell centrosome Division of the cytoplasm following mitosis that forms two daughter cells Cell plate Cytokinesis Centriole Condensin AnaphaseCell cycle Cleavage furrow TIITILIT Term

ng and drop the stages of mitosis to the corresponding images depicting them Chromosomes condense and become visible Spindle fibers emerge from the centrosomes Nucleolus disappears Chromosomes continue to condense Nuclear envelope breaks down 5 m Kinetochores appear at the centromeres Mitotic spindle microtubules attach to kinetochores Centrosomes move toward opposite poles 5 m Mitotic spindle is fully developed centrosomes are at opposite poles of the cell Chromosomes are lined up at the metaphase plate Each sister chromatid is attached to a spindle fiber originating from opposite poles 5 m MITOSIS Metaphase Prophase Anaphase Cytokinesis Prometaphase Telophase Cohesin proteins Chromosomes binding the sister arrive at opposite chopmatids poles and begin together break to decondense down Sister chromatids now called chromosomes are pulled toward opposite poles Non kinetochore spindle fibers lengthen elongating the cell 5 m Nuclear envelope material surrounds each set of chromosomes The mitotic spindle breaks down 5 m Animal cells a cleavage furrow separates the daughter cells Plant cells a cell plate separates the daughter cells Sum

Drag and drop the components of cell division to their definitions Definition Organized sequence of events that a cell passes through from one round of cell division to another Total genetic information contained in a cell or an organism Male and female reproductive sex cells The condition of having two sets of chromosomes The condition of having one set of chromosomes Chromosomes that have a similar size shape and similar genes at the same locations in which one set comes from each parent in sexually reproducing organisms Functional unit of heredity composed of DNA which codes for a protein Physical position of a gene on a chromosome Gametes Cell cycle Diploid Homologous chromosomes Genome Genes Locus Haploid Term

The basic components of a nucleotides are O A glycoprotein a nitrogenated base and a phosphate group A ribose a nitrogenated base and a phosphate O Adenosine Cytidine Guanosine Thymidine and a phosphate group Ribose deoxyribose and a nitrogenated base A furanose sugar and a pyrimidine

O Anaphase Il O Anaphase I O Metaphase II

Which of the following combinations would most likely contribute to the development of a superinfection O Short term use of narrow spectrum antimicrobials O Short term use of broad spectrum antimicrobials O Long term use of narrow spectrum antimicrobials O Long term use of broad spectrum antimicrobials

Question Completion Status QUESTION 5 Match the description of the event to the stage of mitosis The mitotic spindle is fully formed The nuclear envelope begins to form The nuclear envelope begins to break down Chromatin fibers condense and become visible chromosomes V utes 21 seconds V V The centromeres of all of the chromosomes are line up in the center of the cell Microtubules not attached to kinetochores lengthen causing the cell to ol

1 Compare the orientation of the kinetochore during mitosis with the orientations during meiosis I and meiosis II How does this change in the orientation affect these divisions

The production of haploid N gametes is the main purpose of involved in growth and repair O meiosis mitosis budding mitosis O mitosis budding mitosis meiosis while

Did purified rCptA show the same major band as CptA

Date 3 8 4 Meiosis Questions Matching Match each statement with the correct phase 1 Chromatin is visible during this phase 2 During this phase chromosomes are first visible 3 Homologous chromosomes stick together in a process called synapsis 4 During this phase replicated chromosomes become visible but they do not stick together in pairs 5 During this phase homologous pairs of chromosomes move towards the center of the spindle as the spindle forms 6 During this phase replicated chromosomes move towards the center of the spindle as the spindle forms 7 At this point in time homologous pairs of chromosomes are aligned in the center of the cell 8 At this point in time replicated chromosomes not pairs are aligned in the center of the cell 9 Homologous replicated chromosomes in a pair split into separate replicated chromosomes and begin moving towards the poles during this phase 10 Replicated chromosomes split into separate chromosomes and begin moving towards the poles during this phase 11 Replicated chromosomes finish moving towards the poles in this phase 12 Chromosomes not replicated finish moving towards the poles in this phase 13 Scientists use this word to refer to a pause in between meiosis I and meiosis II During this phase centrosomes replicate but chromosomes do not 14 In this event two cells split into the final four daughter cells 15 These are the final products of meiosis Date A Interphase B Prophase I C Prometaphase I D Metaphase I E Anaphase I F Telophase I G Interkinesis H Prophase II I Prometaphase II J Metaphase II K Anaphase II L Telophase II M Cytokinesis N Gametes

Directions The following sentences require you to identify errors in grammar usag every sentence has an error and no sentence will have more than one error Each sentence error if there is one is underlined and lettered If there is an error select the one underlined part that must be changed to make the sentence correct and blacken the corresponding circle on your answer sheet If there is no error choose answer c Do not change elements of the sentence that are not underlined di cons 21 a Their are many ways to counter the ill effects of lethargy b however most choose to continue their ballador our stod bas donos bill of bonorail ofw szort rowisd tilga slovenly ways c no error bbo zid 101 1010snib olf to dool 99012 910 220996 201onsb 61260 70158 off boenlo zavo aid diw 22 Reggie always a wants to please his friends and neighbors so yesterday he b decides to stand on his head for twenty minutes because everyone thought it was a funny trick c no error grubastio sit Toled tuoda ilguodi novon 2nd od 10 howsmod tisth golob ola amoburz zid b wal Terbest T 23 Following his soul a more than his mind last Tuesday Tim b venturing out into the Outback and now he s lost c no error wolso esonoinsz oni stolqmos of land brow sill mor brow lead sih 19tea Directions In each of the following sentences part or all of the sentence is underlined Each sentence is dielo followed by three ways of phrasing the underlined part Choose the best version of the underlined portion of on bna lasing InvoiboM each sentence Choose answer a if you think the original sentence needs no revision ante giodt moit nobun a boi 24 Many reasons to double check intelligence data existed a fact no one was willing to admit until it was too air bazu lovitsofts maitag on T smesed ainsbu12 19 un late Brommba 200 VBW Bill All of a Many reasons to double check intelligence data existed a fact b Many reasons to double check intelligence data existed A fact mabute a asarlw Brotsing c Many reasons to double check intelligence data existed a fact During the hot summer months their are many nights when temperatures hover around eighty degrees 11 a summer months their are many nights when temperatures hover around eighty degrees b summer months temperatures during the night often hover around eighty degrees c summer months however there are many nights when temperatures hover around eighty degrees Lin MOSHEN MONUME 26 On Friday Sam eluded the cops who chased him through the alley today he eluded to T S Eliot in class 1301 a Sam eluded the cops who chased him through the alley today he eluded b Sam eluded the cops who chased him through the alley today he alluded c Sam eluded the cops who chased him through the alley today he alluded

Which of the following statements regarding cyanobacteria is true O Cyanobacteria make iron rust Cyanobacteria are one of the building blocks of life Cyanobacteria changed the chemistry of the atmosphere Cyanobacteria feed off stromatolites

An advantage to using conventional fume hoods is that Select one O the velocity of air moves through the louvers and the sash opening O the velocity of the air moving through the hood increases as the sash is lowered O the velocity of the air moving through the hood increases as the sash is raised the sash will act as an explosion shield

Q1 Select the correct option and then select the Submit button In the diagnosis of Case 1 which mechanism is directly impacted in the plant tissues or structure Leaf cuticle OXylem Root Phloem

Acute toxicity skin irritation carcinogenicity and reproductive toxicity are conditions associated with O Mental hazards O Health hazards O Hazards not otherwise classified O Emotional hazards O Physical hazards

The EPA is responsible for what section O Chemical safety O Employee safety General safety Personal protective equipment

umber of ientation of chromosomes at metaphase I results in an increase in the sex chromosomes possible combinations of characteristics gametes O homologous chromosomes tion 9 1 point Saved Listen Wound Mendelian and an orange

Which of the following is true about meiosis Used to replicate skin cells Does not require interphase Requires two rounds of cell division Results in four diploid cells uestion 4 1 point Saved metaph