What is unit vector and position vector?
UNIT VECTOR- a vector which has a magnitude of one. NULL VECTOR- Null vector is a vector with a zero magnitude. POSITION VECTOR- Position vector, straight line having one end fixed to a body and the other end attached to a moving point and used to describe the position of the point relative to the body.
What are the properties of null vector?
It is defined as a vector that has zero length or no length and with no length, it is not pointing to any particular direction. Therefore, it has no specified direction or we can say an undefined direction. The identity element of the vector space is called a zero vector. It is also known as a null vector.
Which of the following is null vector?
Reason: Null vector is a vector with zero magnitude. Cross product of two paralle or antiparallel vectors is a null vector.
What are different kinds of vector?
The four major types of vectors are plasmids, viral vectors, cosmids, and artificial chromosomes. Of these, the most commonly used vectors are plasmids. Common to all engineered vectors have an origin of replication, a multicloning site, and a selectable marker.
What are three features any cloning vector must have?
The most commonly used cloning vectors are E. coli plasmids, small circular DNA molecules that include three functional regions: (1) an origin of replication, (2) a drug-resistance gene, and (3) a region where DNA can be inserted without interfering with plasmid replication or expression of the drug-resistance gene.
Is plasmid a cloning vector?
Plasmids are cloning vectors that are maintained in cells as autonomously replicating circular double-stranded DNA molecules. A great many cloning vectors that are in use today were derived from naturally occurring plasmids.
What is the movement of DNA between microbes called?
Transduction is the transfer of DNA from one bacterium to another by means of a bacteria-infecting virus called a bacteriophage. In gram-negative bacteria, donor cells produce a specific plasmid-coded pilus, called the sex pilus, which attaches the donor cell to the recipient cell.