front 1 Polyploidy in plants | back 1 All of below:
Polyploidy in plants |
front 2 Meiosis I produces ________, and meiosis II produces _________ cells. | back 2 two haploid, 4 haploid Meiosis I produces ________, and meiosis II ... |
front 3 Colchicine is a toxin that binds to tubulin proteins and prevents microtubules from polymerizing. What affect might this have on dividing cells? | back 3 Sister chromatids will not be properly separated into separate daughter cells |
front 4 You prepare the first ever karyotype of an endangered species of frog. Upon examination you find that all the chromosomes are metacentric. This is going to make it difficult to identify | back 4 both the p and q arms of the chromosome. You prepare the first ever karyotype of an e... |
front 5 Which of the following is NOT a checkpoint that controls the progression of the cell cycle? | back 5 Cytokinesis involves the formation of cleavage furrow to separate the cells. The control of the cell cycle involves all o... |
front 6 Consider a cell in which all of the homologous chromosomes experience nondisjunction during meiosis I. What would be the result of this event? | back 6 "Resulting are aneuploid, resulting in gametes with 4 chromosomes and 2 chromosomes instead of 3" ?two polyploid gametes ?one trisomic and three monosomic gametes ?four aneuploid gametes ?four monosomic gametes X four aneuploid gametes: one trisomic and three monosomic Consider a cell in which all of the homologo... |
front 7 Chromosomes inside the nucleus do not overlap with each other because | back 7 they all have a specific chromosome territory that is determined by the nuclear matrix. Chromosomes inside the nucleus do not overla... |
front 8 Which of the following statements about sister chromatids is TRUE? | back 8 ?Sister chromatids are produced during mitosis ?Sister chromatids are held together by complementary base pairing of DNA at the centromere 2 = ?Sister chromatids are exact copies of each other X Sister chromatids contain the same genes, but they may have different alleles X All Blooms Level: 4. Analyze |
front 9 What does not happen in the cytokinesis of plant cells? | back 9 Formation of cleavage furrow to separate the cells What does not happen in the cytokinesis of p... |
front 10 The process by which haploid cells are produced from diploid cells is called | back 10 meiosis The process by which haploid cells are produ... |
front 11 The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the green arrow (highest concentration of m-cyclin in M phase) is pointing? | back 11 ?At this point in the cell cycle, the cell has determined that the DNA is intact and environmental conditions are favorable for DNA replication ?At this point in the cell cycle, chromosomes have properly aligned on the metaphase plate and are beginning to separate ?At this point in the cycle the cell is determining if environmental conditions are favorable for growth and proliferation ?At this point in the cycle the cell is continuing to grow and make abundant tubulin proteins cyclins in the cell cycle |
front 12 During prometaphase, the sister chromatids organize into a single row in the center of the cell. | back 12 False prometaphase: nuclear envelope completely fragments into small vesicles and the mitotic spindle is fully formed During prometaphase, the sister chromatids o... |
front 13 One major difference between metaphase I and metaphase II is the presence or absence of bivalents. | back 13 True One major difference between metaphase I and... |
front 14 The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the red arrow (highest concentration of G1/S-cyclin) is pointing? | back 14 At this point in the cell cycle, the cell is committing to divide mitotically Cyclin and the cell cycle |
front 15 DNA associates very tightly with nucleosomes because | back 15 negative charges on DNA are attracted to positive charges of the histone proteins. the overall charge of DNA is negative. Opposite charges attract. The histones are positively charged. The two charges are attracted to each other causing them to bind LO: 15.01.01 Describe the features of chromosomes and how sets of chromosomes are examined microscopically. Section: 15.01 The Eukaryotic Cell Cycle |
front 16 The major way that meiosis II differs from mitosis is that | back 16 in meiosis II, the cells are haploid. The major way that meiosis II differs from m... |
front 17 Which of the following statements about the cell cycle is correct? | back 17 When the S phase of the cell cycle is finished, a cell has twice as many chromatids as the number of chromosomes in the G1 phase. Which of the following statements is correct... |
front 18 Which of the following is NOT a part of the mitotic spindle apparatus in plants? | back 18 centrioles |
front 19 How are sister chromatids connected to each other? | back 19 Through cohesion proteins |
front 20 A cell undergoing meiosis that contains sister chromatids may be either haploid or diploid. | back 20 True Meiosis: process by which haploid cells are produced from a cell that was originally diploid -- "the cell undergoing meiosis can be diploid or haploid depending on which stage of meiosis you are in." LO: 15.03.02 Outline the key events that occur during the phases of
meiosis. |
front 21 Which of the following mutations will not alter the amount of genetic material on the chromosomes? | back 21 inversion Inversions flips a region of genetic material in the opposite direction but does not affect the amount of material. Translocation attaches different segments of one chromosome to another this means that it adds to the amount of genetic material. LO: 15.04.02 Identify the four ways that the structure of chromosome
can be changed via mutation. |
front 22 The karyotype of a normal human male would show a total of 23 pairs of homologous chromosomes. | back 22 False The karyotype of a normal human male would s... |
front 23 The centromere | back 23 is a group of proteins that attach to the mitotic spindle. The centromere |
front 24 Mitotic cell division is never used by organisms as a means of reproduction. | back 24 False (asexual reproduction) Mitotic cell division is never used by organ... |
front 25 For any given species, cells in metaphase II of meiosis would contain 2× more genetic material than cells in metaphase of mitosis. | back 25 False For any given species, cells in metaphase II... |
front 26 In a tetraploid species, a euploid individual would have __ sets of chromosomes. | back 26 4 In a tetraploid species, a euploid individua... |
front 27 Put the following steps in the procedure for producing a karyotype in
the correct order. | back 27 II, IV, V, I, III Put the following steps in the procedure for... |
front 28 Consider a diploid species where n=5. If an individual of this species was found to have 11 chromosomes, it would be categorized as | back 28 aneuploid Trisomy 2 -- (2n +1) Consider a diploid species where n=5. If an ... |
front 29 Chromosomes are replicated during the ______ phase. | back 29 S |
front 30 Synaptonemal complexes form during | back 30 prophase of meiosis I Synaptonemal complexes form during |
front 31 Most human embryos that are aneuploid | back 31 are spontaneously aborted in the first trimester. |
front 32 In mitosis, the main difference between plant and animal cells is that | back 32 plants produce a cell plate to segregate the daughter nuclei, while animals form a cleavage furrow. |
front 33 In a haploid dominant species | back 33 the multicellular organism is haploid, and only the zygote is diploid. |
front 34 During crossing over in meiosis, an incomplete exchange of genetic material occurs. This would most likely produce | back 34 ?a deficiency in one homologue and a duplication in the other homologue. ?a deficiency in both homologues. ?a deficiency in one homologue and an inversion in the other homologue. ? a reciprocal translocation. X a duplication in one homologue and an inversion in the other homologue. |
front 35 The life cycle of a sexual reproducing organisms includes: | back 35 mitosis, meiosis, and fusion of the gametes. |
front 36 Humans have __________ different types of autosomes. | back 36 22 |
front 37 A chromosome with the centromere located two-thirds of the distance from its end could be classified as | back 37 either submetacentric or acrocentric. A chromosome with the centromere located two... |
front 38 Why are aneuploidies involving sex chromosomes less detrimental than those involving somatic chromosomes? | back 38 ?Sex chromosomes do not contain genes that are important for anything other than sex determination ?In females, all but one X-chromosome is inactivated, in males, the Y chromosome contains very few genes, so extra or missing copies do not cause huge abnormalities ?Genes expression of the sex chromosomes is not dosage dependent as it is in the somatic chromosomes ?Sex chromosomes are only found in gametes, they do not occur in diploid cells aneuploidies involving sex chromosomes |
front 39 Which of the following occurs during metaphase | back 39 ?heterochromatin is converted to euchromatin. ?chromosomes are about 30 nm wide. ?chromosomes are much shorter than they were in interphase. ?chromosomes undergo gene transcription. During metaphase, |
front 40 Sister chromatids separate during | back 40 anaphase of meiosis II. Sister chromatids separate during |
front 41 A mutation occurs in a gene that encodes a G1-cyclin, such that the protein is unable to bind to its CDK. How will this affect the cell cycle? | back 41 The cell will be stuck in G1 and will not advance through the cell cycle. |
front 42 The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the blue arrow (highest concentration of S-cyclin) is pointing? | back 42 ?At this point in the cell cycle, chromosomes have properly aligned on the metaphase plate and are beginning to separate X At this point in the cell cycle, DNA has already been replicated and divided into two daughter nuclei ?At this point in the cycle the cell is determining if environmental conditions are favorable for growth and proliferation ?At this point in the cycle the cell is continuing to grow and make abundant tubulin proteins cyclins in the cell cycle |
front 43 A person who inherits an extra X chromosome will have | back 43 Klinefelter syndrome. |
front 44 The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the cell cycle where the red arrow (highest concentration of G1 / S-cyclin) is pointing? | back 44 ?CDK proteins are actively phosphorylating proteins that are involved in DNA replication ?CDK proteins are actively phosphorylating proteins that are responsible for assembling the mitotic spindle X CDK proteins are actively phosphorylating and activating cyclins so that the cell will prepare to replicate its DNA ?CDK proteins are actively phosphorylating regions of the DNA that need to be targeted for DNA repair cyclins and CDKs |
front 45 A species that has three sets of homologous chromosomes can have up to _ different combinations of chromosomes in the gametes. | back 45 ? 6 ? 8 ? 64 (not 3 or 27) A species that has three sets of homologous ... |
front 46 Which of the following statements is FALSE concerning sister chromatids? | back 46 Sister chromatids separate during telophase. Which of the following statements is incorre... |
front 47 Sexual life cycles include both haploid and diploid stages. | back 47 True |
front 48 A diploid queen honeybee produce eggs by meiosis. Some of these eggs are never fertilized, while the rest are. These unfertilized eggs develop into haploid male honeybee. This can be an example of sexual reproduction. | back 48 True A diploid queen honeybee produce eggs by mei... |
front 49 If a cell contains 20 chromosomes during G2, it will have 40 chromosomes during S. | back 49 False |
front 50 At the end of meiosis I | back 50 the cells are haploid and the homologous pairs are in separate cells. At the end of meiosis I |