Q: Meiosis It occurs in this type of cell egg cell gamete Sexual reproduction cell Body cell
A: Mitosis cell division leads to formation of two daughter cells and the meiosis cell division leads…
Q: Which type of life cycle has both a haploid and diploid multicellular stage?a. an asexual life…
A: Reproduction is the phenomenon of producing offspring from the parent. The reproduction can be…
Q: parasites
A: There are some emerging evidences which are fully indicating that there are certain parasites which…
Q: Which eukaryotic cell-cycle event is missing in binary fission?a. cell growthb. DNA duplicationc.…
A: A biological cell is a hub of biochemical metabolic activities. Cells can be eukaryotic or…
Q: le 5: Cell Division: The Process of Mitosis and Meiosis Use the following information to answer…
A: A multicellular organism's embryo is the first stage of development. Embryonic growth is the part of…
Q: Mitosis is used to make more body cells while meiosis is only used to make gametes for sexual…
A: Meiosis is the process by which sexually reproducing organisms make their sex cells, sperm and eggs.…
Q: What is the difference between mitosis and meiosis? O nothing, they are both cell division mitosis…
A: The functional and active biological process by which a parent cell, after replication of its…
Q: How does this process relate to the generation time?
A: Prokaryotes are those organisms which lack a membrane bound nucleus. They consist of eubacteria and…
Q: The stages in the image below occurs among cellular slime molds. Celle in spore Nucleu O Spor Amoeba…
A: Slime molds donot have chitin in their cell wall and they move. Hence they They belong to the…
Q: What are extrusomes?a. hairs on flagellab. membrane sacs beneath the cell surfacec. tough-walled…
A: b. membrane sacs beneath the cell surface
Q: What are the stages of meiosis Crossing over and recombination occurs Chromatid doublets move toward…
A: Meiosis is a process where a single cell divides twice to produce four cells containing half the…
Q: A diploid cell is shown below. The cell has three pairs of chromosomes (2n =6). %3D
A: Meiosis is a mechanism in which a single cell divides twice to create four cells with half the…
Q: Binary fissiona. is a form of asexual reproduction.b. is a way for bacteria to reproduce.c. begins…
A: Bacteria or prokaryotes are one of the most abundant and diverse groups of single-celled organisms…
Q: Muter 88 Teo dgta DNAoen Call cison The original cell underwent reproduction in the diagram above.…
A: In the given image, the process of mitosis is depicted. It is a process in which a cell divides into…
Q: Meiosis produces what kind of cells? Leukocytes Cardiac cells Stem cells Gametes OErythrocytes
A: Meiosis produces haploid cells where chromosome number becomes half ie meiosis is a reduction…
Q: Which event leads to a diploid cell in a life cycle?a. meiosisb. fertilizationc. alternation of…
A: A cell is called diploid when it contains two copies of each chromosome. All the cells in the body…
Q: Genetically identical cells produced as a result of asexual reproduction are called: clones siblings…
A: Asexual reproduction is a mode of reproduction exhibited by both lower life forms ( like bacteria,…
Q: Onion root tip slide cell cycle stages 400-450x microscope interphase, prophase, metaphase,…
A: The onion root tips prepared and squashed in a way that allows them to be flattened on a microscopic…
Q: A diploid cell starts with 8 pairs of chromosomes (2n = 16). How many chromosomes would be in the…
A: Mitosis is the type of cell division which takes place in somatic cells .
Q: Review the variety of life cycle. This is a multiple answers question. Which statement is true about…
A: In the life cycle of organisms often various types of cell divisions occur. These divisions have a…
Q: Gametes Meiosis Fertilization Zygote (2n 2n Diploid multicellular organism Mitosis (a) Animals What…
A: The life cycle of an animal includes processes of fertilization, mitosis and meiosis in the cells…
Q: Sex cells (pollen, egg, sperm) are made by the process called: Meiosis Mitosis
A: Answer. Mitosis is a type of cell division in which two daughter cells are produced having the same…
Q: How many chromosomes does a haploid cell contain? 3/4 the number as the parent cell 2/3 the number…
A: Cell is the basic structural and functional unit for life.
Q: How does a Unicellular Organismreproduce?A. Cell divisionB. Cell reproductionC. Cell synthesisD.…
A: Unicellular organisms or single-celled organisms are those that contain a single cell. It usually…
Q: .Meiosis begins in a germ cell with a number of chromosomes and will produce at the end 4 cells with…
A: Meiosis is a cell division of germ cells in organisms that reproduce sexually utilized in the…
Q: This process makes new cells for growth or replaces old or damaged cells: Mitosis Meiosis
A: The cells present in our body get old or damaged get replaced by a new cell which is formed by the…
Q: are found at the chalazal end of the embryo sac. Polar nuclei Synergids Eggs Ovules Antipodals
A: Angiosperms are also known as Flowering Plants. They are the type of plants that are capable of…
Q: Type of Reproduction How many parents? What do the offspring look like compared to parents? Examples…
A: Reproduction is of two types sexual and asexual.
Q: Select ALL of the following that occur during spermiogenesis: Microtubules form a flagellum The…
A: Spermatogenesis is the process through which primary male sperm cells undergo meiosis and generate…
Q: In human life did how many chromatids does a secondary oocyte carry? 22/23/44/46 or 92
A: The secondary Oocyte has 23 chromosomes.
Q: Draw the chromosomes in the zygote (cell after fertilization) and the cells at the end after…
A: Cells reproduce by a cycle of growing and dividing called a cell cycle. The cell cycle is the…
Q: Cytokinesis (cell division) completes the cycle. a) Make a drawing of what happens to the…
A: Introduction Mitosis is a part of the cell cycle,which replicated chromosomes are seperated into two…
Q: according to __________ hypothesis animals descended from a colony of flagellates
A: Flagellates These are the group of protozoans, which are mostly uninucleate organisms. These…
Q: On the diagram below represents events that occur during embryonic development in human. Letters…
A: Mitosis is an educational division. It leads to produce identical daughter cell from parent cell.…
Q: acteria Choose... rus Choose... otozoa Choose... ungi Choose... rchaea Choose... gae v Choose...…
A: Microbes are in the form of bacteria, fungi, viruses and protozoa. Most of these are unicellular.…
Q: (d) Diagram below shows structure P in cell S which is failed to form completely. Structure P Cell S…
A: In the given diagram, we are shown that in cell S, spindle fibers (structure P) is incapable to…
Q: An elephant sperm cell contains 28 chromosomes. How many chromosomes would be in an elephant: liver…
A: Sperm Sperm is the motile gamete produced by male animals. If fertilize the egg to produce zygote.
Q: Mitosis and cytoplasmic division function in .a. asexual reproduction of single-celled prokaryotesb.…
A: Mitosis and cytoplasmic division are described as a process where the cell of an organism is divided…
Q: Meiosis in animals is responsible for the formation of what type of cells? (select all the apply) *…
A: Meiosis: reductional division diploid (2n) reduction to haploid (n). Therefore, after meiosis…
Q: Virology: Why do cells express viral receptors if it allows them to be infected?
A: Introduction :- In viral host range, tissue tropism, and viral pathogenesis, virus–receptor…
Q: Which cells are being made in the tissue section above?
A: Cell division It is defined as process through which cell of parent divide into two or more daughter…
Q: Meiosis Allows fish to control their buoyancy OIs a cell division that produces a diploid cell
A: The type of cell division known as meiosis produces four haploid daughter cells from a single…
Q: Chromosomes are place with short arms pointing upward and long arms downward
A: Introduction: A karyotype is a complete set of metaphase chromosomes, which are sorted by length.
Q: ________ cell culture is similar to that of embryonic stem culture.a) Somatic stem b) Stemc) Gened)…
A: Cells are the basic unit of life. They are often known as "building blocks of the body" and exhibit…
Q: During excystation (excysting) of Giardia which occurs in the lumen of small intestine: * O…
A: Giardia lamblia It is also called by the name of G. Intestinalis. It is a flagellated microbe which…
Q: ow do mitosis and meiosis benefit living things
A: Mitosis : It is a process where a single cell divides into two identical daughter cells . The major…
Q: Binary fissiona. is a form of asexual reproduction.b. is a way for bacteria to reproduce.c. begins…
A: The process of production of offspring of the same kind is called reproduction. It is categorized as…
Q: Meiosis O Turns one cell into two identical daughter cells O Is the cell pathway taken by an embryo…
A: The cell is the basic structural and functional unit of life of all living organisms capable of…
Q: Donkey Zebra Donkey Body Cell: 62 chromosomes Zebra Body Cell: 46 chromosomes Donkey Gamete:…
A: Most of the mammals are diploid in nature, i.e., they have two sets of every chromosome in each…
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- The Adaptive Immune Response Is a Specific Defense Against Infection Researchers have been having a difficult time developing a vaccine against a certain pathogenic virus as a result of the lack of a weakened strain. They turn to you because of your wide knowledge of recombinant DNA technology and the immune system. How could you vaccinate someone against the virus, using a cloned gene from the virus that encodes a cell-surface protein?Which of the following statements are correct about viruses and cancer (select all that appy)? A. Cancer viruses may have DNA genomes B. A virus must have an oncogene to cause cancer C. Cancer viruses may have RNA genomes D. A virus must integrate its genome into the host cell genome to cause transformation of a cell E. At least 80% of known cancers are caused by virusesOncogenes sometimes result from genetic rearrangements(e.g., translocations) that produce gene fusions. An exampleoccurs with the Philadelphia chromosome, in which a reciprocaltranslocation between chromosomes 9 and 22 leads to fusion of thefirst part of the bcr gene with the abl gene. Suggest two differentreasons why a gene fusion can create an oncogene.
- What might best explain why the incidence of cancer increases as people age? Select one: a. mutations accumulate as people age b. cell division increases as people age c. protein synthesis increases as people age d. telomerase activity increases as people age e. ATP production increases as people ageHIV requires an enzyme called ______________ to convert its RNA genome to a DNA version. Why is this enzyme a particularly good target for anti-AIDS drugs?Many viruses that infect eukaryotic cells express genes that alterthe regulation of host gene expression to promote viral replication.For example, herpes simplex virus-1 (HSV-1) expresses aprotein called ICP0, which is necessary for successful viral infectionand replication within the host. Lutz et al. (2017. Viruses9: 210) showed that ICP0 can act as a ubiquitin ligase and targetthe redundant transcriptional repressors ZEB1 and ZEB2,which leads to upregulation of the miR-183 cluster (a set of threemiRNAs transcribed from the same locus). Speculate on how miR-183 cluster upregulation may benefitthe virus.
- Synthesis of new bacteriophages in a bacterial host involves the use of a.) Host cell encoded proteins only b.)Virally encoded proteins only c.) Both host and virally encoded proteinsMy hypothesis: The Hyper-IgE syndrome, also known as Job’s syndrome, is an immunodeficiency disease resulting from the lack of function of a single gene (gene ‘X’). This Hyper IgE/Job's syndrome or STAT3 deficiency(HIES) is caused by STAT3 gene mutation. STAT3 is a gene involved in major signal transduction pathways including wound healing, angiogenesis, immune response, and allergies. This genetic mutation is autosomal dominant in nature. The above mentioned are the most likely immune function impaired in the Gene X-deficient patients including immunity with eczematous and non-immunologic system disorders. Question: In a lab, histological examination of tongue sections from Candida albicans infected mice were examined, and the numbers of infiltrating leukocytes (white blood cells) were quantified in each microscopic field of each section, and the results are shown in the figure below. Do these data support or refute my hypothesis stated above? Why or why not?The family of a sixth-grade boy in Palo Alto, California, wasinformed by school administrators that he would have to transferout of his middle school because they believed his mutation ofthe CFTR gene, which does not produce any symptoms associatedwith cystic fibrosis, posed a risk to other students at the schoolwho have cystic fibrosis. After missing 11 days of school, a settlementwas reached to have the boy return to school. What ethicalproblems might you associate with this example?
- A chromosome contains many different genes that are transcribed into different ___ . a. proteins b. polypeptides c. RNAs d. a and bAdapting to Host Defenses Surface proteins called HLAs allow white blood cells to detect HIV particles and fight an infection. In a recent study, scientists tested whether HIV is adapting to this host defense. They did so by looking at the frequency of a specific mutation (1135X) in HIV. This escape mutation helps the virus avoid detection by a version of the HLA protein (HLA-B51) that is common in some regions of the world, but not in others. FIGURE 20.19 shows the percentage of HIV-positive people who had HIV with the 1135X mutation. Data were collected at medical centers from several parts of the world. FIGURE 20.19 Regional variation in the frequency of the 1135X escape mutation among HIV-positive people. For each region, pink bars represent the percentage of people whose blood cells have HLA-B51. and thus cannot detect 1135X mutants. Blue bars represent the percentage of people with other versions of the HLA protein. These people have blood cells that can detect and fight HIV even if it has the 1135X mutation. 1. What percentage of people with H LA-B51 in Vancouver had HIV with the escape mutation for this protein?Put these events in chronological order and explain why (i.e. each process listed). Sigma factor binds to RNA polymerase. Sigma factor binds to the promoter region. RNA synthesis begins. The double helix of DNA is unwound, breaking apart the complementary strands. Sigma factor is released.
