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Cell culture is the complex process by which cells are grown under controlled conditions. The growth of explants taken directly form the living organism (e.g. biopsy material) is also known as primary cell culture. The culture consists of mixed population of cell types. Frequently the some of the cells may survive without proliferating and will therefore be lost in the increasing population of those which are able to multiply in the conditions supplied in vitro. Cells from explants may sometimes be converted to cell lines by passage. These may continue to proliferate for a number of cell generations. In some instances the primary cells are fused with so-called immortal (cancer) cells to produce a hybridoma line. Many of the explanted cells will only survive for one or a few passages before dying.
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What is a primary and secondary contour?
Primary contours refer to the main outlines or edges of an object that define its overall shape and structure, typically representing significant features in a design or drawing. Secondary contours, on the other hand, are the additional lines or details that enhance the primary contours, adding depth, texture, and complexity to the representation. Together, these contours help convey three-dimensional forms and improve visual clarity in artistic and design contexts.
Define directional vs non directional hypothesis?
A directional hypothesis predicts the direction of a relationship or difference between variables, stating which variable will have a greater or lesser effect. A non-directional hypothesis simply predicts that a relationship or difference exists between variables without specifying the direction.
Define meristems and explain its role in primary and secondary stem growth?
Meristems are areas of cell division that are found at the tip of the stem and just behind the tip of the root of a plant. They provide the cells that are needed in plants to produce height. They also aid secondary stem growth by forming additional cells to increase width.
Why do you think is industry classified into three level define the levels given an example of each?
Industry is classified into three levels—primary, secondary, and tertiary—to better understand the nature of economic activities and their contributions to the economy. The primary level involves the extraction of raw materials, such as agriculture or mining; for example, farming wheat. The secondary level focuses on manufacturing and processing these raw materials into finished goods, like a factory producing bread from the wheat. The tertiary level encompasses services that support the economy, such as retail or healthcare, exemplified by a grocery store selling the bread to consumers.
What is the difference between a simple and long chain polymer?
The main difference between a simple and long-chain polymer is the size of the repeating units they are made of. Simple polymers consist of small repeating units, while long-chain polymers are made up of longer repeating units. Long-chain polymers typically have higher molecular weights and physical properties than simple polymers.
Explain the difference between primary and secondary market research data give an example of each and explain how each helps define a business customer?
difference between primary and secondary market
Define the relationship between primary consumers and secondary consumers?
Between that of a Primate and a Scavanger
Define the difference between primary and secondary endocrine pathology?
Primary endocrine pathology refers to dysfunction within an endocrine gland itself, causing abnormal hormone production. Secondary endocrine pathology results from dysfunction in the pituitary gland or hypothalamus, leading to inadequate stimulation or suppression of hormone production in the target endocrine gland.
Compare primary and secondary succession by giving examples of each?
Compare means define so define both of the terms.
What is difference between define and cons Explain with suitable example?
Difference between define and cons is that, con is disadvantage, whereas define means to elaborate something fully.
How do you define difference between a 105 and is2062?
how to identify difference between A 105 and IS 2062
What is secondary key?
define secondary key
What are difference between primary and secondary data?
Primary data is data which has been collected by yourself, which is more reliable and up to date. Secondary data has been collected from a secondary source (Other people, business etc.) so it may not be valid or up to date."Primary" and "secondary" are terms used to define data relative to the purpose by which the data were collected originally."Primary data" are data collected for the need at hand."Secondary data" are data that were collected for another reason but is being re-purposed to address the need at hand.When describing the expertise of data analysts, it is not uncommon to distinguish between primary and secondary data analytics. Primary data analytics involves the ability to analyze data for the purpose by which it has been collected. Secondary data analytics involves identifying "secondary data sources" to solve a new problem and then the ability to re-purpose that data.Primary data is a data which is created for the first time and there is no previous source available. Secondary data is a readily available data like data from trade directories,statistics from websites etc. In Dissertation Literature review is done through secondary data which includes the contents such as theories, models, compilation, research findings by some other scholar etc.
Define secondary source?
A written paper or recording presenting information find at another source. It is part of a scholarship, along with a primary source.
Define secondary sector?
no.
What is no of turns in winding of secondry side of Trasformer when the input is 11KVA and output is 430V?
Turns ratio will define the change in voltage from primary to secondary. What you have supplied is not enough information - you have 1 voltage, and a power value (Killovoltamperes = KVA), which is clearly not enough to answer the equation: N1/N2 = V1/V2, where N1 is the primary side turns, N2 is the secondary, V1 is primary, and V2 is secondary voltage.
What key defines a relationship between two tables 1 Primary key 2 Secondary key 3 Foreign key?
Foreign key is used to define a relationship between two tables by referencing the primary key of another table. It ensures data integrity and enforces referential integrity between the related tables.
