Cell Cycle and Cell Division Questions and Answers

All of the following increase genetic variation EXCEPT Multiple Choice O mutation random fertilization mitosis independent assortment crossing over

At the end of meiosis II each of the four resulting cells contains Multiple Choice two full sets of chromosomes each with 2 molecules of DNA one full set of chromosomes each with 1 molecule of DNA one full set of chromosomes each with 2 molecules of DNA two full sets of chromosomes each with 1 molecule of DNA

The pairing of homologous chromosomes is called Multiple Choice independent assortment alignment synapsis syngamy crossing over

Multiple Choice one full haploid complement of chromosomes chromosomes identical to those of a sperm cell two copies of each chromosome one copy of each chromosome chromosomes identical to those of an egg cell

Compared to asexual reproduction the main advantage of sexual reproduction is that it Multiple Choice can produce more complex offspring requires less energy increases the genetic diversity of the offspring can produce a greater number of offspring

You have isolated the enzyme Milleniase from the rare Y2K bug This enzyme cleaves the first two numbers off of four digit dates You flex your skills as an enzymologist and come up with the following graph of initial velocity as a function of substrate concentration 40 35 A 30 25 20 15 10 5 0 0 10 What is the approximate value of Vmax a 5 b 17 c 35 7 20 20 30 S 40 50 60

Cut Out Page INSTRUCTIONS In this activity you will cut out the images below so that you can paste them on the Stages of Meiosis Paste Page Figure out where to best put each image so that the correct stages of meiosis can be represented The Paste Page contains lines with dots so you know where you should paste your images Clear tape will work just as well as glue DIP RRAY

PART 7 METAPHASE II for 2n 4

a Homologous Chromosomes Before Replication b Homologous Chromosomes After Replication c Diploid Somatic Cell 2n 4 after DNA Replication PART 2 MEIOSIS PREPARATION a A cell 2n 4 at Metaphase 1 of Meiosis b How do you indicate homologous pairs of chromosomes Where did this organism get each member of a homologous pair of chromosomes ART 3 MEIOSIS 2n 10 complete on separate pieces of paper and attach to lab results

This protein or protein complex functions in the cell to stop cell division if the cell has experienced extensive DNA damage Multiple Choice Condensin p53 FtsZ

The point of constriction on chromosomes that contains certain repeated DNA sequences that bind specific proteins is called Multiple Choice The centriole The kinetochore The centrosome The cohesin complex

Multiple Choice A protein that destroys cohesin through its protease activity A protein that marks a protein called securin for destruction A protein that is part of the cohesin complex A protein that targets the mitotic cyclin for degradation

At what checkpoint s does the cell arrest in response to DNA damage Multiple Choice G2 M G2 M and spindle G1 S and G2 M spindle

16 This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell 25 oints Multiple Choice Metaphase Interphase Prophase

2 You are conducting a genetic screen using Caenorhabditis elegans embryos to isolate mutations affecting anaphase A Therefore you need to look for embryos in with Multiple Choice the centromeres do not move toward the poles the spindle apparatus does not disassemble sister chromatids are mismatched and therefore fail to separate the poles do not move apart

Help Save Exit Submit 9 A cell biologist produces a karyotype of mouse somatic cells arrested in mitosis She sees 40 chromosomes which is completely normal for mice Based on this information what is the haploid number of chromosomes for mice 25 Multiple Choice C It cannot be determined from the information provided 80 C 40 10

Multiple Choice 46 pairs of sister chromatids and 184 individual DNA molecules 46 pairs of sister chromatids and 46 individual DNA molecules 46 pairs of sister chromatids and 92 individual DNA molecules 23 pairs of sister chromatids and 46 individual DNA molecules 23 pairs of sister chromatids and 92 individual DNA molecules

b 5 52 nts Multiple Choice 16 222 32

5 These structures are held together by cohesin Multiple Choice Homologous chromosomes Sister chromatids Solenoids

Which of the following events occurs during prophase A nucleus reforms B Chromosomes split C chromosomes line up

If a human diploid cell and a human haploid cell somehow managed to fuse together and not lose any of the chromosomes how many chromosomes would be inside the newly formed cell O A 92 B 46 C 23 C

2 points 1 3 Name the two rod like structures labeled 3 Kinetochore Centromere Sister chromatids Histone Nucleosome

Which of the following occurs during interphase Chromatin becomes tightly coiled Chromosome duplication occurs Sister chromatids separate The mitotic spindle forms

Mitosis is important for all of the following functions EXCEPT Oproduction of sperm and eggs growth of a multicellular organism cell replacement asexual reproduction

How does prophase I differ from prophase II During prophase I there is one diploid cell during prophase II there are two haploid cells During prophase I chromosomes line up single file during prophase II the chromosomes line up double file During prophase I the chromosomes coil up the chromosomes are not coiled up during prophase II In prophase I the sister chromatids are attached in prophase II the sister chromatids are separated

During metaphase 00 the nuclear envelope breaks up DNA decondenses chromosomes line up at the equatorial plat centromeres divide

separate phase II Four haploid daughter cells are produced 28 Please list and explain 3 ways that meiosis contributes to genetic variation Crossing Over Exchange of genetic material between homologous chromosomes 2 Independent Assortment Random alignment of homologous poi combinations

The cell below is in metaphase I of meiosis There is no crossing over When this cell full completes meiosis what gametes will be formed XIX X X 8 X a ABD abd b AaBbDd only c AbD abd d AAbbDD aaBBdd

Mitosis of an Animal Cell Enchanted Learning com

Contrast the body organization of Porifera Cnidaria and Coelomates and provide a sketch of the basic body plan of each Upload discussion and sketches

Acritarchs probably represent cyanobacteria O True O False

39 SSSS 0000 O I 1 Which type of cell division is this How do you know

Figure B 1 Which type of cell division this How do you know 2 What types of cells might this impact on someone s body 3 Why is this abnormal Figure B 45

If you were to create something that stops bacteria from replicating how would it have to be different from creating something that stops human somatic cells from replicating

Figure C 1 Which type of cell division is this How do you know 2 What types of cells might this impact on someone s body 3 Why is this abnormal Figure C I

3 Temporal lateral view 6 Sacrum posterior view

6 Using colored pens or pencils show how 2 chromosomes are passed from the mother cell to the two daughte cells O 8 O

16 Why is it important for DNA to replicate during interphase before meiosis Does it replicate between meiosis I and meiosis II

A Fill in the missing words 1 The smallest part of your body is 2 Your leg is made up of 3 All 4 When one cell divides it makes 5 Cells take in 6 Cells give off 1651431 B Answer True or False Br a cell your hand one cell many cells are made of cells objects living things cells 2 4 food wastes food wastes 1 Cells are in all living things 2 A plastic comb is made of cells 3 You need a microscope to see some cells 4 Cells divide and make more cells 5 You grow because your cells divide 6 When you stop growing your cells stop dividing 7 You are made up of one very large cell Name two jobs of a cell Answer the questions I What are your body and all other living things made of How do cells grow in number Most cells are very small How could you see these cells

Match the event with the correct age origin of the earth solid crust forms oldest known earth materials oldest known fossils Choose 4 4 Ga 3 6 Ga 4 0 Ga 4 6 Ga Choose Choose

phenotype an organism s appear ink by the genotype determined E HT stated by the laws of segregation and independe of segregation the two alleles for the same trait gamete formation and end up in different gametes Separate durin laws of independent assortment genes for one frait are not inherited with genes of another trait a Remember during interphase the chromosomes are replicated to produce identical sister chromatids 5 To help with the concept of independent assortment let s look at an example of a plant that is heterozygous for two traits One trait B is for a blue flower color The second trait R is for round seeds The plant s genotype therefore is BbRr During meiosis we will see the law of independent assortment in action Let s take a look inside the plants cell B b R DNA replication B B b e R RT 1 b Next during meiosis specifically metaphase I the homologs will randomly line up at the metaphase plate The first chromosome orientation has been done you Chromosome orientation 1 Metaphase I Metaphase II B Bb b R Sister Chromatids Homologous Chromosomes B B R Ri BXB R R 1px V 100 bX X b r c There is another way the homologs can align at the metaphase plate Determine the second orientation and fill in the subsequent stages Chromosome orientation 2 Metaphase I Metaphase II DA A Box RB Rb r b r B d At the end of meiosis the BbRr plant produces four unique gametes

3 Which expression has a product that is less than the first factor Select all that apply A 42 X B 35 X C 78 x D 26 X 21 12 2 15 45 4 Which expression product that is greater than the second factor Select all that apply A 23 12 2 1 0 x75 B 33 3 2 C 26 X D 10 5

that it is relevant for metabolism what is the metabolic entry point Question 7 2 points 4 Listen Part III Is there a net gain or loss of ATP during the transport of the citrate Table 3 The Cell Wall The Cell Membrane Glycolysis TCA cycle Electron Transport Chain Groek ETPUM ETPUM Lak mbic Medium 2

Belinda called Kyle running to catch up to her Belinda turned around and waited for him Are you heading to the lab right now asked Kyle Yes she said I want to look over the Gram stain protocol one more time before we go in Yeah good idea I ve been trying to memorize the steps But it s hard Belinda and Kyle spent the twenty minutes remaining before the start of lab going over Chapters 3 and 4 of their textbook which listed the steps of the Gram stain and how the staining results relate to the structure of the bacterial cell wall Kyle and Belinda took a sample of the bacteria provided by their instructor and each performed the Gram stain They focused on their slides with the oil immersion lens Got it they said almost simultaneously grinning proudly So what do you have asked Belinda I have Gram positive bacilli announced Kyle with an air of triumph Huh I have Gram negative bacilli That s not right we used the same sample Let me see yours Kyle peered through Belinda s microscope Your bacteria look like they have the same shape as mine but the color is different Mine are obviously purple but yours look much lighter They are definitely pink Maybe you did something wrong Why me You could have done something wrong Kyle looked up from Belinda s microscope Fair enough Kyle continued I prepared a bacterial smear like we learned last week then I added safranin then Gram s iodine then decolorizer then I added crystal violet You switched up the crystal violet and the safranin said Belinda I did Let me see that protocol again Hmm I guess you re right Let me try it again 1 Explain how the difference in the structure of the cell wall results in the different colors after performing the Gram stain 2 Why did Kyle s Gram stain give the wrong result 3 Are there any other mistakes that can result in gram negative bacteria staining purple Which

True or False All prokaryotes are unicellular True O False

Are Green Algae more closely related to Animals or to Brown Algae another photosynthesizin eukaryote

At metaphase I homologous chromosomes are connected only at what structures O Microtubules Recombination nodules Chiasmata

X 81

Asexual reproduction is the production of offspring from the fusion of two sex cells O True O False Genotype refers to an individual s outward appearance with respect to a specific characteristic True False 1 point 1 point

Trisomy is a chromosomal abnormality in which there is a single chromosome in place of a homologous pair O True O False Sexual reproduction is the production of offspring from a single parent O True False 1 point 1 point