What are the three protein families that regulate the cell cycle?

Q: What is the substrate of a histone acetyltransferase?

A: Substrate are molecule on which an enzyme acts.  Transcription is the process by which information…

Q: Define histone variant, and explain why histone variants are functionally important.

A: A complex of macromolecules consisting of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), and…

Q: rms of the cell cycle, what would happen if there was a defect in the Rb prote made it unable to…

A: Rb protein is a tumor suppressor protein that is it suppresses the tumor from growing. Hence Rb…

Q: What could be an example of in vitro experiment to identify cytoskeleton accessory proteins?

A: Cytoskeleton is the part of a cell which provides structural support to the cell and plays roles in…

Q: One of the followings is a protein that stabilizes plus ends, decreasing th likelihood of subunit…

A: Microtubule is the term used for describing the tubulin polymer that makes up the Cytoskeleton. They…

Q: What three molecular mechanisms alter chromatin structure and are responsible for many epigenetic…

A: Step 1-  A gene is the essential physical and useful unit of heredity. Genes are comprised of DNA…

Q: Briefly describe a summary of the flow of genetic information in cells with diagram.

A: Gene expression is that the method the cell uses to provide the molecule it desires by reading the…

Q: If cells are infected with a vesicular stomatitis virus (VSV) strain in which a viral gene (VSVG) is…

A: VSV (Vesicular Stomatitis Virus) is a single-stranded RNA virus belonging to the rhabdoviridae…

Q: One change observed at the centrosomes early in mitosis is an increase in the number of…

A: polar orientation of microtubules. associate with other proteins to form gamma tubulin ring complex…

Q: What is Allosomes? State its other name?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: You have discovered a new species of plant. You isolate chromatin from the plant and examines it…

A: Histones are basic proteins that are rich in basic amino acids like arginine and lysine. These basic…

Q: How does the Bicoid protein gradient form?

A: Bicoid is a maternal effect gene that works as a “morphogen” during Drosophila embryogenesis. It was…

Q: What are three events occurring in prophase that are undone in telophase?

A: In cell cycle, M phase or mitosis is the phase where the actual cell division process takes place.…

Q: Give typing answer with explanation and conclusion In which cells are the histone tails cut and for…

A: *Histone tails undergo substantial modification to control a variety of biological functions, such…

Q: Describe centromeres in yeast

A: The centromere is a specialized sequence of DNA of a chromosome and it links the sister chromatids.…

Q: Describe the basic structure of a nucleosome. What is the role of histone H1?

A: DNA is the double-stranded molecule that is the genetic material in most animals except for some…

Q: Describe in general terms the histone code hypothesis

A: The Histone code is a hypothesis where a DNA  encodes the genetic information of transcription which…

Q: in a diploid species, one somatic cell has8 chromatids before S phase. In this species,  2n=2? 2n=4?…

A: Introduction  When people talk about "cell division," they typically mean mitosis, which is the…

Q: Mention the function of non-histone protein.

A: The chromosomes are thread-like structure located in the nuclei of both plant and animal cells. They…

Q: One of these is not part of the nucleosome core but is thought to participate in locking the two…

A: The fundamental subunit of chromatin is termed nucleosome. The nucleosome is made of two turns of…

Q: Name the two places in the eukaryotic cell where the cell component Ribosome, mRNA, tRHA and rRNA…

A: The translation is the process of protein production using mRNA and ribosomal machinery. The…

Q: Cells tend to have a relatively small and uniform size. Why aren’t cells larger? Discuss your…

A: Cell is the basic structural, functional and biological unit of all organisms.Cell is the smallest…

Q: What is the difference between an autonomous and a nonautonomousTE? Is it possible for nonautonomous…

A: Transposable elements are also called jumping genes that have the tendency to move from one location…

Q: Each of the ff. involves a disorder in the function of an organelle or other cell structure.…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: In a tissue engineering experiment, stem cells are grown in a circular dish (diameter = 3 cm) with a…

A: values given in this experiment required for calculation are  diffusion rate = 1*10-5 cm2/s dish…

Q: Name the 5 types of histones, Which form the nucleosome core and which histone holds the nucleosome…

A: Histones are protein biomolecules that are responsible for stabilizing and condensing the DNA of…

Q: What are histones made of and Why histones are basic proteins?

A:

Q: What two properties define a stem cell? Distinguish between a totipotent stem cell, a pluripotent…

A: In the body, stem cells work as a repair system. Stem cells are cells having the ability to develop…

Q: How can we test whether certain proteins will localize to a particular division site between a…

A: Protein localization refers to the specific location or compartment within a cell where a protein is…

Q: What are the two main functions of the APC / cyclosome complex? Describe in detail.

A: The process by which a parent cell divides and forms two daughter cells is referred to as cell…

Q: A polyribosome helps the cell to make multiple copies of the same polypeptide in a shorter time…

A: Ribosomes are present in the cytoplasm and on the surface of the nuclear envelop and endoplasmic…

Q: What are the   basic functions of histones?

A: The folding of the DNA molecule into a compact, orderly structure that fits into the limited space…

Q: How many types of histones and non histone  are there?

A: Histones are highly basic proteins present in the eukaryotic cell nuclei. They pack and order the…

Q: Which of the following make up a core nucleosome structure?   A)  about 147 bp of DNA D)  A tetramer…

A: INTRODUCTION- Chromosome is made up of histone proteins. These proteins interact with the long DNA…

Q: ) O Slime layer: loose assemblage of polysaccharide material external to the cell envelope 3) O…

A: The prokaryotic and eukaryotic cellular machinery is distinctive to each other. It is studied under…

Q: Why does release (the rate of release of minus ends from the nucleation site of the centrosome,…

A: The microtubules are cylindrical structures composed of tubulin proteins. These tubulin proteins are…

Q: What is the key difference between metaphase I and metaphase II?

A: In meiosis, diploid germ cells are formed by two nuclear divisions, that is meiosis I and meiosis…