Which statements are true? Explain why or why not.1 In the small intestine, stem cells in the cryptsdivide asymmetrically to maintain the population of cellsthat make up the villi; after each division, one daughterremains a stem cell and the other begins to divide rapidlyto produce differentiated progeny.2 Stem cells, being stem cells, are by definition thesame in all tissues.3 Every tissue that can be renewed is renewed froma tissue-specific population of stem cells.4 Disturbance of the balance in the activities ofosteoblasts and osteoclasts in favor of osteoclasts cangive rise to the condition known as osteoporosis, the brit-tle-bone syndrome of the elderly.

Q: 14. In some types of colon cancer, stem cells have a mutation in the APC gene. What happens if the…

A: The following questions pertain to genetic mutations and their impact on cell growth and division.…

Q: Explain why the colloid osmotic pressure of the plasma is much higher than the colloid osmotic…

A: The osmotic pressure or the oncotic pressure is the pressure that drives the fluid movement from the…

Q: Which of the following describes the daughter cells produced by telophase I and cytokinesis?

A: The ploidy of a cell is the number of chromosome present in a cell. Meiosis is reduction division…

Q: Which term is incorrectly matched?(a) biogeochemical cycles—recycling of life-essential ele-ments…

A: The presence of all physical surroundings on Earth are known as the environment. The environment…

Q: 11. Diagram what would happen if sexual reproduction took place for four generations using diploid…

A: Assuming that each individual has two sets of chromosomes (diploid), the diagram below shows the…

Q: if 20 skin cells enter G2 phase, how many cells will be observed at the end of metaphase? O 10 030 O…

A: The orderly sequence of events by which a cell duplicates its DNA synthesizes its other components…

Q: 1. The point of cleavage of the cohesin complex differes in vertebrates and invertebrates. In…

A: Cell cycle is a process which results in the division of a parent cell into daughter cells. It is…

Q: What differences in the cell cycle mightoccur between the cells of a benign andmalignant tumor?

A: The tumor is a tissue mass that is produced by the abnormal proliferation of body cells. During…

Q: A diploid cell (2%3D10) contains differenttypes of chromosomes based on the position of their…

A: Cells reproduce by a cycle of growing and dividing called a cell cycle. The cell cycle is the…

Q: 1. Which modification occurs as part of transcriptional termination? Explain this modification and…

A: 1 ) ANSWER The maturation of a eukaryotic mRNA from primary mrna transcript  involve many complex…

Q: Stem cell lines are developed from O multipotent cells O inner cell mass cells from a blastocyst…

A: Stem cells are pluripotent cells. They can be preserved for future generation, to store human genes.…

Q: A cell that undergoes mitosis without cytokinesis would result in: cells lacking nuclei O sister…

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: The cell cycle is regulated by - O Internal signals External signals Internal and external signals…

A: Introduction: The cell cycle is a four-stage process in which a cell grows (gap 1, or G1), copies…

Q: When analyzing a cell sample under a microscope, the presence of: vacuole, endoplasmic reticulum,…

A: Prokaryotic cells do not possess membrane-bound cell organelles like Eukaryotes. But not all…

Q: Can you explain: p53 and p63 genes, the relationship will have between the two genes being mutated,…

A: Ectodermal disorder- It is a group of disorders that can arise from the mutation of one or more…

Q: Cell A goes throuh mitosis.  What is the number of chromosomes in the resulting daughter cells?

A: The cell is the basic structural and functional unit of life. It carries out various functions in…

Q: 1. Sheets of skin are grown in a culture in order to replace the skin of victims with severe burns…

A: Any one of the four major cell types that make up the epidermis may be referred to as a "skin cell."…

Q: Interphase occurs between mitotic divisions (inter- means between). What 3 phases of the cell cycle…

A: Interphase is the cell cycle phase that occurs between mitotic divisions. It is a critical stage in…

Q: Sources of human stem cells: O inner cell mass of blastocyst umbilical cord blood O adult stem cells…

A: Stem cells are a reservoir of undifferentiated cells that can differentiate into any type of cell…

Q: 7. Describe what happens by the end of anaphase. a. The chromosomes in the cell become less tightly…

A: Cell division is a biological process that results in the production of two or more daughter cells…

Q: A dominant modality to expand the stem cell pool is to allow stem cells to divide symmetrically.…

A: The "cell cycle", also known as "cell division", is a set of processes that occur in a cell leading…

Q: A mutated form of protein p5x is found in patients with squamous cell carcinoma. In vitro studies…

A: A gene that produces a protein that is essential for regulating cell division and death and is…

Q: and cytop Two cells are dividing. One cell is dividing to produce a gamete. The other is a skin cell…

A: The process of creating two or more daughter cells from a parent cell is known as cell division.…

Q: 8:22 What I Know 19% Directions: Choose the letter of the correct answer. Write your answers on a…

A: Approach to solving the question: one by one answered systematically Detailed explanation: Examples:…

Q: 7. Which statement about cell-cycle checkpoints is FALSE? * O Cell-cycle checkpoints control…

A: The division of a cell into two daughter cells and the duplication of genetic material are both…

Q: Can the Dissolution/ Condensation of P granules suggest how the fertilized eggs which is germ cell…

A: The breakdown and condensation of P granules during early embryo genesis sheds light on the…

Q: Some germ-line mutations predispose individuals tocancer, yet often environmental factors…

A: A germline mutation is also called a germinal mutation. It refers to identifiable changes in the…

Q: Gene X is responsinle for cell provferation and when gene x is expressed, me cells divide and go…

A:

Q: ly the cell cycle of human hepatocytes (i.e. cells from the main tissue of the culture a single…

A: The observation described suggests uncontrolled cell division, smaller cell volume, and an…

Q: A mass of cells that do not respond to the normal controls of the cell cycle and extend into…

A: In this question, we have to answer about the cell not respond to normal control of the cell cycle…

Q: Cell-Cell interactions play no role in either determination or differentiation. True  False

A: Cell–cell interaction is the direct interactions between cell surfaces. It play a crucial role in…

Q: Mesenchymal stem cells are one of the adult stem cells with a germ spesific mesodermal…

A: Stem cell are special group of cells in the body which have the ability to self renew and…

Q: ch *REQUIRED 10. Which statement concerning the reproductive cells in the diagram below is correct?…

A: Introduction :- One cell (the mother) divides into two genetically identical new cells (the…

Q: QUESTION 11 Which of the following is FALSE about mitotic cell division? OA Some cells repair and…

A: Mitosis is the division of a single cell into two daughter cells that are similar. It is the process…

Q: 1. During development from stem to fully differentiated, cells in the body alternately divide…

A: Cell division is the process by which a parent divides into two or more daughter cells. cell…

Q: Why would it be important to replicate DNA before a cell divides in mitosis or meiosis? For genetic…

A: Mitosis produces two identical nuclei from the original nucleus. Meiosis, on the other hand,…

Q: The following micrograph shows mitosis in some cells in an onion root tip. 0 1 Identify the phase…

A: The cell division process known as mitosis occurs in both plant and animal cells. It is crucial for…

Q: 2 Sem ces can "sell-renew. What does this mean? a. They can give rise to speciiallized cells. D They…

A: Stem cells are cells in the body that have the ability to differentiate into a variety of different…

Q: Embryo is a solid ball of cells 2.(a) Describe the difference between pluripotent and multipotent…

A: Human stem cells are unique cells with the capacity to develop into multiple cell types. They can be…

Q: 1. What effects do these losses have on their function and life span? For example, o Without…

A: The most important part of the cell is the nucleus, for this is where all the instructions for the…

Q: Chromosomal translocations AND mutations in cadherin binding sites can result in cancer. Select one:…

A: When a segment of one chromosome separates and joins another chromosome, the process is known as a…

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.