Biology Test 4 Sample Questions
Terms in this set (25)
An enzyme that seals DNA
segment of DNA
A restriction fragment
Small, circular pieces of DNA
virus and plasmid
____ and _____ can be used as a cloning vector
DNA fragments migrate toward which electrode during gel electrophoresis?
The procedure used to determine the exact order of nucleotides in DNA
Restricting enzymes are also known as
Human insulin DNA is joined with plasmids using _______ to make recombinant DNA
Nucleic acid hybridization
The procedure using DNA probes to form hybrids with target DNA is known as
Human Genome Project
HGP stands for
The HGP has taught us that there are approx ______ number of genes in humans
A typical model organism widely used in labs to study basic genetic biological mechanisms
A photo showing all of the human chromosomes in pairs is called a
Stem cells are said to be _____ having an unlimited capability to differentiate
Researchers at Cornell University reported that pollen from ___ corn is toxic to monarch butterflies
risks to human health
& risks to the environment
Possible risks involving genetic engineering include
Humans have been creating new livestock, crops, and domestic pets for thousands of years through a process known as
DNA that binds RNA polymerase.
A promoter is the region of
promoter, the operator, and the structural gene(s).
The three basic parts of an operon are the
translated by the ribosomes to make the enzymes.
The RNA transcribed from an operon is
_______ acts as a corepressor to block transcription of the tryptophan operon.
codes for proteins needed for tryptophan synthesis.
The trp operon (tryptophan operon)
transcription is stimulated
When lactose binds to the operator
transcription is inhibited when the repressor binds to the operator.
In the lac operon
changes in the sequence of DNA bases