(a) Copyright © 2003 Pearson Education, Inc., publishing as Benjamin Cummings. What is the structured pointed in red? spindle fibers O Kinetochore O centromere

Q: The moray eel and cleaner wrasse story at the beginning of the chapter is an example of which type…

A: The study of the relationships between living species and their physical surroundings to uncover key…

Q: 1. list all the similarities between DNA and chromosome

A: The nucleic acids found in the cells are DNA and RNA. DNA resides in the nucleus while RNA can be…

Q: How does porins regulate transcription in E. coli and what is the role of EnvZ (sensor kinase) and…

A: Porins are outer membrane proteins associated with the modulation of cellular permeability and…

Q: Two pure-breeding strains of flies are mated, and the F1 are intercrossed.  The first strain has…

A: The cross asked in the question is a dihybrid cross because two characters are involved here. First…

Q: Which memory would you like to improve, and why? Semantic, episodic, procedural

A: Memory in human:- Memories in human brains may be short term or long term. Short term memory of…

Q: importance of understanding the nature of drugs and medicine

A: Introduction :- a dose form with one or more active chemicals as well as potential inactive ones.…

Q: 8. A salt solution that contains 20% salt contains 9. If you were told that a type of cell contained…

A: * Hypotonic solution contains few dissolved particles like salt or other electrolytes than in normal…

Q: This organelle is like a school, students will leave the school obtaining different expertise on…

A: Introduction :  Cells are the basic, fundamental unit of life. So, if we were to break apart an…

Q: Proto-oncogenes can be converted to oncogenes in a numberof different ways. In some cases, the…

A: Cancer is caused by the activation of a group of genes called proto-oncogenes (which are actually…

Q: You find yourself standing next to a beautiful rose bush. Which of the following do you and the rose…

A: Eukaryotic organisms are those that have well-defined organelles. These have relatively large-sized…

Q: . In common wheat, Triticum aestivum, kernel color is determined by multiply duplicated genes, each…

A: The genes in the DNA code for a specific trait. Each gene has two alternative forms called alleles…

Q: How do we know that malignant tumors arise from a singlecell that contains mutations?

A: Introduction  A tumor is nothing but uncontrolled cell division, which can lead to the formation of…

Q: What are Proto-oncogenes ?

A: The cell have the DNA as the genetic material in the nucleus. The DNA contains the various genes…

Q: Which manifestations of liver disease are due to hepatocellular failure and which are due to portal…

A: Liver disease  Applies to many conditions that stop the liver from working or prevent it from…

Q: 3. Enzymes are important during the process of fertilization. What would be the anticipated…

A: Introduction :  Sperms are the male gametes. It is produced in the testes. Sperm is the male…

Q: In 2006, the US Food and Drug Administration (FDA) approved the use of bacteriophage preparation…

A: A bacteriophage is a tadpole-shaped virus that infects bacteria for their reproduction. They have a…

Q: n 1- Question 14 ation of cells and cellular components is accomplished with a centrifuge. A sample…

A: Eukaryotic cell is made up of membrane bound organelles such as nucleus, lysosomes, mitochondria,…

Q: 1. Discuss the effects of the corona virus in the biotic organisms and the abiotic environment.

A: Biotic organisms are the living organisms which includes all forms of life on earth whereas abiotic…

Q: 1. Read through each procedure below and BRIEFLY describe the procedure in one-two sentences. Be…

A: Answer :  Reducing sugars are any carbohydrates that contain a free aldehyde or ketonic group that…

Q: Nucleus   · connect these terms: nuclear envelope, nuclear pores, replication, transcription,…

A: Nucleus  It is the double membranous structure present inside the cell which contains genome of the…

Q: Differentiate Brownian movement and true motility

A: All living things, including microbes, require movement. They prefer beneficial substances such as…

Q: What is biome

A: Introduction: Frederick Clements originated the word "biome" in his opening statement to the…

Q: What is essential for all development and tissue repair in multicellular organisms ?

A: Multicellular organisms have multiple cells in their body.

Q: Mentions the advantages of membrane bioreactors in water treatment

A: Membrane bioreactors (MBRs) combine membrane technology with biological processes to clean…

Q: How bacteriophage lambda carrying your gene of interest can introduced into the host cells.

A: Introduction :  The viruses that infect and reproduce within bacteria are called bacteriophages.…

Q: 12. 1 B Required Study the diagram of the cell in the solution shown in the beaker below. 90% H₂O…

A: The diagram shows a cell containing 10% solute and 90% water in a beaker containing a solution of…

Q: 5. What is the name of the outer cell layer of the blastocyst and what does it give rise to? Does…

A: Introduction  Human fertilisation is the joining of a human egg and sperm, which takes place in the…

Q: How Metastatic tumors arise ?

A: The tumor is the term given to the mass of cells or tissues formed when the cells of that tissue…

Q: Which property is illustrated in the following examples? A bacterium makes a copy of itself,…

A: Every living organisms shows some defining properties such as reproduction, growth, cellular…

Q: Which expenmental outcomes collactively support the conclusion that an embryonio cell has a…

A: Introduction Embryonic stem cells come from initial stage of embryos. Generally embryonic stem cells…

Q: Two pure-breeding strains of flies are mated, and the F1 are intercrossed.  The first strain has…

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Which of the following marks an important event during telophase? movement of chromosomes at the…

A: Mitosis is a cell division process in which the chromosomes replicate and are evenly distributed…

Q: You obtain a patient sample and need to grow all bacteria that are found in the sample. What five…

A: Bacteria are both beneficial and detrimental. Food cannot be digested if there are no bacteria, and…

Q: Explain about Cell-Cycle Control and Checkpoints ?

A: The process of the cell cycle is regulated to prevent uncontrolled cell division.

Q: What RNA base sequence is complimentary to the following DNA base sequence 5'-CATGATTAT-3'? Using…

A: Gene expression is the process through which the genetic codes of a gene, the nucleotide sequence,…

Q: How does porin protein regulation work?

A: Introduction :- Porins are beta barrel proteins that act as a pore through which molecules can…

Q: Give a detailed description of the structure, characteristics, and functions of proteins.

A: Proteins are the class of complex, nitrogenous, organic compounds composed of amino acid residues…

Q: 1 2. T B Type here to search Required The diagram below represents a cell. Carbon dioxide (CO₂) and…

A: Cell  The basic structural and functional entity of every living organisms except viruses and few…

Q: On a separate sheet of paper, copy and complete the key points of the methods used to introduce…

A: Genetic engineering is a widely used technology in molecular biology in which genetic material is…

Q: Relate the role of hemoglobin and insulin in one of the functions of proteins.

A: Introduction :  Proteins are large molecules made up of the building blocks known as amino acids.…

Q: ree groups of plants are grown in the same location in a greenhouse, each receiving the ame amount…

A: An experiment is a scientific investigation in which  a point is proved by giving a certain…

Q: A specific DNA segment, which we later learn has the sequence of 5' AGCTGAGTCAGCT 3', fails to…

A: Please follow step 2 for detailed explanation.

Q: Describe Ehrlich's experiments with trypanosomes. Was he successful in finding a cure for…

A: Introduction  Paul Ehrlich was a German doctor and scientist who won the Nobel Prize for his work in…

Q: Make a dichotomous key of these animals: Cockroach, Dogs, Cats, Grasshoppers, Bees

A: Cockroach  Dogs  Cats  Grasshoppers  Bees  1. Wings absent     Wings present Go to 4 Go to 2…

Q: How does the fact that our brains evolved relate to the role of exercise on brain function? Choose…

A: Evolution of brain is a complex phenomena. During the course of evolution, natural selection…

Q: Below are six faces. Each face represents a species. Seven characters are listed in the table, along…

A: Introduction :  A genetically determined characteristic or condition is known as trait. It is the…

Q: What are the three main functions of carbohydrates?

A: Carbohydrates are biomolecules consisting of carbon, hydrogen, and oxygen atoms.It is mainly found…

Q: A student develops four models for the composition of a eukaryotic cell. The weight of the cell is…

A: Introduction There are two types of cells are found depending on the presence of true nucleus.,…

Q: Response to stimuli (internal and external) is a characteristic of all animals all animals and…

A: Introduction :- Anything that can cause a change in behaviour or physical state is a stimulus.…

Q: Make a dichotomous key about: Weeping fig, Fukien tea tree, Poisonhub, Dragon Tree, and Balsam…

A: A dichotomous key is a valuable tool for identifying things that are unfamiliar to the observer,…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: