Name two types of somatic cells in your body.

1 Answer

Answer :

Brain and liver

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Description : Think carefully, now. How many DNA molecules are in each of your somatic cells?

Last Answer : •In preparation for cell division, DNA is replicated and the chromosomes condense •Each duplicated chromosome has two sister chromatids, which separate during cell division, but a single DNA MOLECULE

Description : How many chromosomes are in a human somatic cell?

Last Answer : •Somatic cells (nonreproductive cells) have two sets of chromosomes

Description : In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Last Answer : •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

Description : What occurs in meiosis? How is the chromosome number of daughter cells different?

Last Answer : •Gametes are produced by a variation of cell division called meiosis •Meiosis yields nonidentical daughter cells that have only one set of chromosomes, half as many as the parent cell

Description : Name the two types of gametes.

Last Answer : •Sperm and eggs

Description : List two specific cancer treatments, and tell how each treatment works.

Last Answer : Chemotherapy: Medication usually formulated chemically, and radiation where radiation is directed in certain doses via electromagnetic waves

Description : What are growth factors?

Last Answer : •Some external signals are growth factors, proteins released by certain cells that stimulate other cells to divide

Description : What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, not proceeding onto the S phase

Description : What does MPF trigger? What are some specific activities that it triggers?

Last Answer : •MPF (maturation-promoting factor) is a cyclin-Cdk complex that triggers a cell’s passage past the G2 checkpoint into the M phase

Description : The activity of cyclin-dependent kinases (CDks) rises and falls. Why?

Last Answer : •The activity of cyclins and Cdks fluctuates during the cell cycle, molecularly, it either receives a message to go ahead or not to go ahead.

Description : What is a protein kinase?

Last Answer : The Cell Cycle Clock: Cyclins and Cyclin-Dependent Kinases •Two types of regulatory proteins are involved in cell cycle control: cyclins and cyclin-dependent kinases (Cdks)

Description : What is the Go phase? Describe this phase.

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, switching into a nondividing state called the G0 phase

Description : What is a cell cycle checkpoint?

Last Answer : The sequential events of the cell cycle are directed by a distinct cell cycle control system, which is similar to a clock The cell cycle control system is regulated by both internal and ... The clock has specific checkpoints where the cell cycle stops until a go-ahead signal is received

Description : What are the components of the mitotic spindle?

Last Answer : •The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

Description : What is a kinetochore?

Last Answer : •During prometaphase spindle microtubules appear and are kinetochores (somewhat track like) where sister chromatids travel along them to the centriole (astor, opposite pole) region. .

Description : What are the components of the mitotic spindle? What is the source of these components?

Last Answer : •The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis

Description : What is mitosis?

Last Answer : •Eukaryotic cell division consists of Mitosis, the division of the nucleus.

Description : Define chromatin.

Last Answer : •Eukaryotic chromosomes consist of chromatin, a complex of DNA and protein that condenses during cell division

Description : How many chromosomes in a human gamete?

Last Answer : 23

Description : What is a gamete?

Last Answer : •Gametes (reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells

Description : What is the meaning of genome?

Last Answer : •All the DNA in a cell constitutes the cell’s genome Compare your genome to that of a prokaryotic cell. •A genome can consist of a single DNA molecule (common in prokaryotic cells) or a number of DNA molecules (common in eukaryotic cells)

Description : What is meant by the cell cycle?

Last Answer : •The continuity of life is based on the reproduction of cells, or cell division

Description : 'Barr body' is found in - (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Last Answer : (3) Female somatic cells Explanation: A Barr body is the inactive X chromosome in a female somatic cell in those species in which sex is determined by the presence of the Y or W chromosome rather ... typical human female has only one Barr body per somatic cell, while a typical human male has none.

Description : ‘Barr body’ is found in (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Last Answer : Female somatic cells

Description : Which one of the following is a case of wrong matching? (a) Somatic – Fusion of two hybridization diverse cells (b) Vector DNA – Site for tRNA synthesis (c) Micropropagation – In vitro production of plants in large numbers (d) Callus – Unorganised mass of cells produced in tissue culture

Last Answer : (b) Vector DNA – Site for tRNA synthesis

Description : 9. Which one of the following is a case of wrong matching ? (1) Callus - Unorganised mass of cells produced in tissue culture (2) Somatic hybridization - Fusion of two diverse cells (3) Vector DNA - Site for t-RNA synthesis (4) Micropropagation - In vitro production of plants in large number

Last Answer : Vector DNA - Site for t-RNA synthesis

Description : Selection of somatic hybrid cells? -Biology

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Description : In the human anatomy, eggs and Sperm are a form of which of the followingA.Asexual reproduction B.Sexual reproduction C.GametesD.Somatic cells?

Last Answer : The answer is C. Gametes

Description : $ Meiosis is a requirements of sexual reproduction. ! Meiosis occurs in somatic cells.

Last Answer : $ Meiosis is a requirements of sexual reproduction. ! Meiosis occurs in somatic cells. A. If both As and R ... is wrong D. If both As and R are wrong.

Description : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule?

Last Answer : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule? A. 40 B. 20 C. 10 D. 40 and 20

Description : Where does mitosis happen in somatic or germ cells?

Last Answer : Mitosis happens in the somatic cell

Description : Transgenic animals may be prepared by introducing a foreign gene into (A) Somatic cells of young animals (B) Testes and ovaries of animals (C) A viral vector and infecting the animals with the viral vector (D) Fertilised egg and implanting the egg into a foster mother

Last Answer : Answer : D

Description : S1 nuclease hydrolyses (A) DNA of somatic cells (B) DNA of sperms (C) Any double stranded DNA (D) Any single stranded DNA

Last Answer : Answer : D

Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

Last Answer : Ans. ((a))

Description : The process of the division of somatic cells of an organism is called (a) Mitosis (b) Meiosis (c) Cytokinesis (d) None of these

Last Answer : Ans:(a)

Description : Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature? (1) They do not need to reproduce. (2) They are somatic cells. (3) They do not metabolise. (4) All their internal ... Only (1) (b) (1), (3) and (4) (c) (2) and (3) (d) Only (4)

Last Answer : (d) Only (4)

Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Last Answer : (b) Synapsis

Description : Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space ... (a) (2) (a), (c) and (d) (3) (b) and (c) (4) only (d)

Last Answer : (4) only (d)

Description : Somatic cells of a human have ____ chromosomes and are called (A) 10, haploid (B) 92, diploid (C) 23, haploid (D) 46, diploid

Last Answer : (D) 46, diploid

Description : What is the difference between a somatic cell and a germ cell?

Last Answer : A: A somatic cell is any cell in the body that is not a germ cell, which are the cells that give rise to eggs or sperm. Somatic cells are diploid, meaning they have two copies of each chromosome, while germ cells are haploid, meaning they have only one copy of each chromosome.

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