Which statement about stem cells is false? A. Stem cells were first identified in the hematopoietic system. OB.Stem cells in organs can only differentiate into the tissue in which they are located. C. Stem cells are a subpopulation of less differentiated, self-renewing cells present in most adult tissues. D. Stem cells divide to form one daughter cell that remains a stem cell and a second cell that proliferates and then differentigtes.

Q: Which gene program is described correctly? A. Cell division is the process whereby identical cells…

A: Which gene program is described correctly?

Q: hemoglobin to bind oxygen? a. White blood cells  d. Plasms c.platelets  d.red blood cel

A: Hemoglobin is a metalloprotein. It acts as a respiratory pigment for carrying respiratory gases such…

Q: These genes are involved in normal cell growth and division, but if mutated, could become more…

A: Oncogenes are tumour-causing genes. They are mutated and abnormal that leading to uncontrolled cell…

Q: Research the function of the protein called p53. What does this function do? Explain how it can…

A: Step 1 The p53 gene was identified by Arnold Levine, David Lane and William Old in 1979. The p53…

Q: Which cells would contain the most mitochondria?

A: Mitochondria is a double membrane cell organelle. Mitochondria consists of the inner mitochondrial…

Q: A experiment in which cancer cells were injected into the vein leading to the liver demonstrated:…

A: Cancer that spreads from where it started to a distant part of the body is called metastatic cancer

Q: What's the primary difference between adult stem cells and embryonic stem cells? O A. Adult stem…

A: Stem cells have the capacity of generating different types of cell types that have different…

Q: when does DNA synthesis occur?  a.

A: The cell cycle consists of several phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M…

Q: How are stem cells shielded from the contents of the small intestine? a. By their tissue…

A: Intestinal stem cells are found in the crypts of the instentine. They have the ability to divide and…

Q: What is the role of executioner proteins in apoptosis?a. They kill the cell by destroying its…

A: Apoptosis is a cellular process which is a programmed cell death mechanism. Whenever any cell starts…

Q: In which marked area below are cells dividing most frequently? OD A C B A B C

A: The above image is of skin.  The skin is mainly divided into two layers - the outermost epidermis…

Q: Which of these processes is MOST directly involved in the resorption of a tadpole’s tail during…

A: The process of resorption of tale in tadpoles is one of the most physiologically notable processes…

Q: A doctor is using a camera to gulde Instruments into blood vessels. What should the doctor expect to…

A: Closed circulatory system is a type of circulatory system in which blood flows inside the blood…

Q: What do mural cells do? a. Provide the endothelial tubes with structural stability and ability to…

A: ▪︎Mural cells control blood vessel constriction and dilation by regulating blood vessel diameter .…

Q: What happens to microtubules in the presence of very high levels of GTP?   A. They will undergo…

A: In eukaryotic cells three types of cytoskelton proteins are found that are- microfilament,…

Q: When pluripotent stem cells differentiate AND self-renew how many specialized cells can be produced…

A: Stem cell A cell that has the ability to continously divide and differentiate(develop) into various…

Q: Analyze the roles of DNA repair, cell cycle control, and the immune system that play in cancer…

A: ANSWER;-

Q: Human skin cells divide at a higher rate than neurons (nerve cells). Hypothesize why this may be.

A: Skin cells are continuously dividing through the process of mitosis, they die and produce new cells…

Q: mutation in p53 promoter that prevents p53 from being expresses Causes? Why? A. Increased…

A: Cancer is a condition in the body where cells in particular tissues lose the function of apoptosis…

Q: therefore, can treat many diseases of the blood. In the past, extracting bone marrow from a donor…

A: It is a technology  which  involves the passing of person blood via an   an apparatus which…

Q: Which statement describes tumor cells? A.  Tumor cells acquire a drive to proliferate that does not…

A: New cells replace old ones when they die as a result of ageing or damage. Occasionally, this…

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.