Chapter 10 Cell Cycle

Transcription

1 Chapter 10 Cell Cycle Chapter 10 Cell Cycle Grade:«grade» Subject:Biology Date:«date» 1 As a cell becomes larger, its surface area increases faster than its volume. 2 As a cell becomes larger, its volume increases faster than its volume. 3 All of the following are problems that growth causes for cells EXCEPT A excess hydrogen B obtaining nutrients C expelling wastes NA overload 4 When during the cell cycle are chromosomes visible? A only during interphase B only when they are being replicated C only during the M phase D only during the G1 phase 5 Which pair is correct? A G1 phase, DNA replication B G2 phase, preparation for mitosis C S phase, cell division D M phase, cell growth 1

2 6 DNA is replicated during M phase of the cell cycle. Yes No 7 When during the cell cycle is a cell's DNA replicated? A M phase B S phase ytokinesis D G1 phase 8 Which event occurs during interphase? A The cell grows. B Centrioles appear. C Spindle fibers begin to form. D Centromeres divide. 9 Put the phases of mitosis in the correct order. A M, A, T, P B P, A, T, M C T, A, M, P D P, M, A, T 10 What do the spindle fibers do during mitosis? A Breaks down the nuclear envelope. B Duplicates the DNA. C Helps separate the chromosomes. D Creates the centrioles. 11 Which of the following is a factor that can stop normal cells from growing? A Contact with other cells B Growth factors C A cut in the skin D Cyclin that has been taken from a cell in mitosis. 12 Cyclins are a family of closely related proteins that A regulate the cell cycle. B produce p53. C cause cancer. D work to heal wounds. 2

3 13 Cancer is a disorder in which some cells have lost the ability to control their A size. B spindle fibers. C growth rate. D surface area. 14 Before a normal cell becomes too large to carry out normal activities, it will usually divide to form two cells. A brother B father C sister D daughter 15 Proteins that regulate the cell cycle based on events inside the cell are called regulators. A external B internal C replicating D dysfunctional 16 How does an increase in cell size affect the ratio of surface area to volume? A The ratio becomes smaller. B The ratio is not affected. C The ratio becomes larger. D None of the above. 17 Put the three parts of interphase into the correct order. A G1, G2, S B S, G1, G2 C G1, S, G2 D G2, G1, S 18 Which statement below happens during prophase? A The DNA is replicated. B The chromosomes line up in the center of the cell. C The chromosomes pull to different sides of the cell. D The nuclear envelope disappears. 19 What statement below happens during metaphase? A The nuclear envelope begins to reappear. B The chromosomes line up in the center of the cell. C The chromosomes pull to different sides of the cell. D The nuclear envelope disappears. 3

4 20 Which statement below happens during anaphase? A The nuclear envelope begins to reappear. B The chromosomes line up in the center of the cell. C The chromosomes pull to different sides of the cell. D The DNA is replicated. 21 Which statement below happens during telophase? A The nuclear envelope begins to reappear. B The chromosomes line up in the center of the cell. C The chromosomes pull to different sides of the cell. D The DNA is replicated. 22 Mitosis is the division of the A cytoplasm B cell C nucleus D centrioles 23 Cytokinesis is the division of the A cytoplasm B cell C nucleus D both A and B 24 Compared with small cells, large cells have more trouble A dividing B producing chromosomes C moving needed materials in and waste products out D making copies of their organelles 25 What is 'DNA overload'? A Too many copies of DNA in one cell. B Chromosomes moving to the wrong side of the cell during anaphase. C A cell growing too large to be supported by the available DNA. D None of the above. 26 The cell cycle is the A series of events that cells go through as they grow and divide. B period of time between the birth and the death of a cell. C time from prophase until cytokinesis. D time it takes for one cell to undergo mitosis. 4

5 27 The middle area that connects 2 sister chromatids is called A chromosome B centromere C centriole D spindle 28 In which phase of mitosis do chromosomes become visible? A interphase B metaphase C anaphase D prophase 29 What is a tumor? A an accumulation of cyclins B a mass of cancer cells C the rapidly dividing cells found at the site of a wound D a defective chromosome 30 Together, G1 phase, S phase, and G2 phase are called A mitosis B cytokinesis C cell cycle D interphase 31 Another name for cell division is the phase. A S B G1 C M D G2 32 Why are chromosomes not visible in most cells except during cell division? A Hidden by the nucleus. B Are in the form of chromatin. C We simply don't have microscopes powerful enough to see the chromosomes. D None of the above. 33 Name two factors that help regulate the timing of the cell cycle. A cyclins and contact inhibition B contact inhibition and temperature C cyclins and p53 D none of the above 5

6 34 If the surface area of a cell increases 100 times, its volume increases about A 5 times B 10 times C 100 times D 1000 times 35 The rate at which wastes are produced by a cell depends on the cell's A ratio of surface area to volume B environment C volume D surface area 36 If a normal cell divides, you can assume that A its surface area has become larger than its volume. B its volume has become larger than its surface area. C it has grown to its full size. D it has grown too larger to meet its needs. 37 If a cell's DNA were not copied before cell division, the cell could A have a DNA overload B become cancerous C fail to exchange materials D divide 38 Which of the following is a correct statement about the events of the cell cycle? A Little happens during the G1 and G2 phases. B DNA replicates during cytokinesis. C The M phase is usually the longest phase. D Interphase consists of G1, S, and G2 phases. 39 Which of the following is NOT a correct statement about the events of the cell cycle? A Interphase is usually the longest phase. B DNA replicates during the S phase. ell division ends with cytokinesis. D The cell grows during the G2 phase. 40 The first phase of mitosis is called A metaphase B anaphase C prophase D telophase 6

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8 Chapter 10 Cell Cycle (2) Chapter 10 Cell Cycle (2) Grade:«grade» Subject:Biology Date:«date» 1 The two main stages of cell division are called A mitosis and interphase B synthesis and cytokinesis C the M phase and the S phase D cytokinesis and mitosis 2 During normal mitotic cell division, a parent cell having four chromosomes will produce two daughter cells, each containing A two chromosomes B four chromosomes C eight chromosomes D sixteen chromosomes 3 What happens when cells come into contact with other cells? A They divide more quickly. B They stop growing. C They produce cyclins. D They produce more organelles. 4 Cancer affects A humans only B most unicellular organisms C multicellular organisms D none of the above 5 As a cell's size increases, its ratio of surface area to volume increases. 7

9 6 As a cell's size increases, it places more demands on its DNA. 7 Cell division solves the problem of cell growth by increasing cell volume. 8 An imaginary cubic cell with a side lenght of 10 mm would have a ratio of surface area to volume of 6:10. 9 A cell's chromosomes are replicated during interphase. 10 If it takes a cell one hour to undergo mitosis, about 50 minutes of the time would be spent in prophase. 11 The number of sister chromatids in a human body cell that is entering cell division is A 5 B 10 C 46 D During metaphase, each chromosome is connected to a (an) at its centromere. A centriole B spindle C microfilament D cell membrane 13 In figure 1, which part is called M phase? 8

10 14 In figure 1, A, B, and C combine to be called A prophase B cytokinesis C interphase D telophase 15 In figure 1, which letter represents the time in the cell cycle where the cell grows the most. 16 In figure 1, which letter represents the time in the cell cycle where the DNA is replicated? 17 In figure 4, which letter represents prophase? 18 In figure 4, which letter represents metaphase? 19 In figure 4, which letter represents anaphase? 20 In figure 4, which letter represents telophase? 9