SCIN130- Test-chapter 8

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American Military University *

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130

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Biology

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May 30, 2024

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The process of asexual reproduction known as binary fission occurs in which group of organisms? Vv Your answer Is correct Bacteria ] Animals Insects = == The correct answer is shown. During DNA replication, all of the DNA within a cell is copied. ¥ Your answer Is correct Prior to cell division, DNA is packaged into ,» which are then easily distributed among the two daughter cells. + Your answer Is correct chromatin chromosomes J genomes sister chromatids == =m

The process of allows for growth and cellular division. Your answer is partially correct gamete fertilization Which of the following is true about asexual reproduction? + Your answer is correct Two genetically identical individuals are formed. Two different parents are required. At least two genetically different individuals are formed. == == The cell cycle is comprised of two processes; they are and W Your answer Is correct “ cell growth B4 <o division cellular respiration sexual reproduction c= ==

The correct answer is shown. The process of cell reprodiiction allows for growth, repair of damaged tissues, and cell replacement. Your answer Is correct c= == Arrange these stages in order from the start to end of mitosis. ¥ Your answer Is correct | prophase 2 metaphase ) anaphase <|[R][&]]% 4 telophase == ==

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The diagram shows which of the following? V Your answer Is correct A replicating cell \ B 7vo sister chromatids un duplicated chromosome e == A benign tumor is one that v Your answer is correct. has started to send out cells into the rest of the body through the blood or lymph. has cells that have escaped into nearby tissues, meaning that it is invasive. is contained within a capsule and therefore cannot invade surrounding tissues. . =0 The correct answer is shown. /A tumor that is cancerous and has the ability to spread is referred to as a 11| 1 tumor. + Your answer s correct e xu

List the stages of interphase in order, beginning with the stage immediately after cytokinesis. V¥ Your answer Is correct v 16, v 2s v 36, The two types of molecules that make up chromatin are and V Your answer is correct carbohydrates (v = = ==

The components of a nucleosome are V¥ Your answer Is almost correct. RNA l : + DNA hormones histones c= == Choose the correct function of a centromere. + Your answer is correct The organelle that controls spindle construction. A protein that associates with DNA and helps in its packaging The attachment site of sister chromatids. e =u The correct answer is shown. The repeating sequence of events in eukaryotes that involves cell growth and cell division and includes the stages G1, S, G2, and mitosis is called the W Your answer Is correct c= ==

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Which phase will end in the formation of 2 daughter cells? X sorry, your answer is incorrect. Meiosis Il u Interphase = o] During interphase, a cell X sorry, your answer is incorrect is in stasis and no changes occur. l ! performs its usual functions. u only performs the functions that prepare it for division. = o]

During which stage does the cell replicate its organelles? X sorry, your answer Is Incorrect A cell that does NOT undergo cell division is said to be in the stage. W Your answer is correct G, G, S e ]

Which process occurs during the S phase of interphase? V' Your answer Is correct. DNA replication Doubling of organelles Cytokinesis c= == During the G, phase which of the following occurs? + Your answer is correct Organelles, including mitochondria are replicated. DNA replicates, forming two sister chromatids. n Proteins required for microtubules are acquired and synthesized. c= == When DNA is wrapped around several histones, this forms a complex called a V¥ Your answer is correct nucleosome nucleolus nucleotide o= ==

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At the end of mitosis and cytokinesis, + Your answer Is correct 2 genetically different cells are formed. 2 genetically identical cells are formed. 2 haploid cells are formed. e == When comparing interphase and the mitotic phase, which one takes the cell longer to complete? v Your answer Is correct. Mitotic phase n Interphase = == Which of the following occur during the G, stage? + Your answer is correct. Replication of DNA Cytokinesis Organelle replication == ==

Mitosis produces ¥ Your answer Is correct u two genetically identical daughter cells. J the proteins that a cell needs to function. four non-identical daughter cells. c= == The collection of fibers that pulls sister chromatids apart during mitosis is called the . W Your answer Is correct. centromere cytokinesis spindle == = The correct answer is shown. A(n) proto-oncogene is a normal gene that can become an oncogene (cancer causing gene) through mutation. V Your answer Is correct c= =

/A mutation in which of the following genes can lead to an inactive tumor suppressor protein? v Your answer is partially correct ‘ : + BRCA1 gene J Ras gene RB gene ) == = The cell cycle is controlled via a system of W Your answer is correct. mutations checkpoints ) delays == == The correct answer is shown. Type your answer in the box. Cancer Is characterized by nondifferentiated cells that exhibit loss of contact inhibition, uncontrolled growth, and the ability to invade tissues and metastasize. + Your answer Is correct. e ==

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Which of the following is a gene that normally codes for a protein that suppresses cell division? W Your answer is correct (v ) Benign gene Oncogene MHC Polyribosome gene = == When proto-oncogenes mutate, they become cancer-causing genes called . W Your answer is correct B oroseres ) growth factors tumors. c= ==

Select the choices that may reduce a person's risk of developing cancer. + Your answer s correct n avolding excessive alcohol consumption. u stopping smoking. increased sunbathing. avoiding apoptosis. c= == Using the diagram, list the steps of apoptosis in the correct sequence placing the M first step at the top. . *® W Your answer Is correct v 1 normal cells + 2 cell rounds up and nucleus collapses V3 chromatin condenses and DNA fragments + 4 plasma membrane blisters, blebs form v 5 cell fragments The correct answer is shown. Atthe end of cell division, the cell ;laic is the divider across a plant cell that marks the location for new cell walls and plasma membranes. W Your answer Is correct == ==

True or false: Tumors consist of cells in a single layer that exhibit contact inhibition. W Your answer Is correct. L4 False == == The correct answer is shown. The process by which a cancer travels through the blood and lymphatic vessels and then invades new tissues is called /notosto V¥ Your answer Is correct e == Choose the characteristics that are common to cancer cells. W Your answer is correct. lack of differentiation are stuck in G, n do not undergo apoptosis B rorm wmors B4 -brormal nucei == ==

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What happens at the G, checkpoint if the DNA is determined to be damaged after replication? Vv Your answer s correct. Cell division can be stopped and the cell enter G. The cell must be destroyed. Repairs can be initiated. ) ] = The correct answer is shown. Type your answer in the box. If a cell has 52 chromosomes at the start of mitosis, the two resulting daughter cells will each have 2 chromosomes. V¥ Your answer s correct e ==

Which phase of mitosis is shown in the diagram? Your answer Is correct. Metaphase Cytokinesis Telophase (v o Prophase c= == Select the requirements for a cell to pass the G, checkpoint. v Yo nswer is correct Growth signals such as growth factors must be present. The DNA must be replicated. The spindle fibers must be attached to the chromosomes. The DNA must be undamaged. : T

Mitosis is the division of the cell's DNA, while is the division of the rest of the cell. ¥ Your answer s correct apoptosis n cytokinesis meiosis == =u

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