gmos test Questions and Correct
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Plants can be genetically modified in a number of different ways.
Select all of the methods by which scientists are genetically modifying
plants
Ans: - Plasmids within the plant pathogen. Agrobacterium
tumefaciens, are used to introduce genes into a plant
- Small particles of genetically modified DNA coated in a metal
are fired by a gene gun into plant tissue
- Small pieces of RNA are used to silence the expression of
specific alleles
CRISPR is a tool used in genome editing. Which of the following
descriptions correctly describes how CRISPR may be used?
Ans: - To remove and replace the gene of a soybean to improve
the quality of soybean oil
- To remove and replace the gene of a corn to increase the
plant's drought tolerance
- To treat human diseases by deleting and replacing harmful
mutations
- To inactivate genes to determine the role of the gene in the
target cell
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Genes are the basic physical and functional unit of hereditary and
contain information that codes for a loss of a product
Ans: False
A gene consists of a long combination of five different nucleotide
bases. Different combinations of the nitrogenous bases give
instructions for different products
Ans: False
Some genes act as instructions to make molecules called proteins
Ans: True
Some genes do not code for proteins but instead RNA molecules
Ans: True
While genes may contain information for a single trait, they often
create products that interact in complex biological pathways that may
be influenced by other genes
Ans: True
Environmental conditions can influence the expression of a gene
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Ans: True
It is always a simple process to identify one gene associated with a
single trait
Ans: False
DNA carries the instructions to produce molecules that carry out of all
of the functions of a cell required for life and ultimately determines the
chemical and physical characteristics of living organisms
Ans: True
In DNA, each molecule is encouraged by a gene a specific sequence of
carbohydrates that specify how a molecule is to be made
Ans: False
The primary products of DNA are RNA and the arrangement of
nucleotides within a gene specifies the order and types of amino acids
that must be put together to make an RNA molecule
Ans: False
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Proteins are made of a long chain of chemicals called amino acids,
which are determined by the nitrogenous base sequence of nucleotides
Ans: True
Th particular sequence of amino acids in the chain is what makes one
protein different from another
Ans: True
General description of use of vector
Ans: Genetic material is introduced into a plant by using a
plant bacterial pathogen
General description of particle bombardment
Ans: Plant cells are transformed by bombarding the tissue with
the modified DNA particles
General description of RNA interference
Ans: Plant cells are transformed by silencing existing genes
Procedure of RNA interference
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