Question

1. bacterial enzymes that cut dna molecules at specific nucleotide sequences are called

a. cdna enzymes
b. bacterial polymerases
c. restriction enzymes
d. dna polymerases

1. scientists have inserted the gene for human insulin into plasmids. the new plasmids are an example of...

a. recombinant dna
b. applied bioinformatics
c. therapeutic cloning
d. gene therapy

1. in the human genome project, scientists have identified the sequence of base pairs of the human chromosomes, and are working to determine the...

a. sequence of opposite dna strands.
b. function of particular genes.
c. first gene associated with a disease.
d. code that dna uses to make amino acids.

1. the process of dna testing to determine a persons risk of having or carrying a genetic disorder is part of...

a. dna fingerprinting
b. genetic engineering
c. the hapmap project
d. genetic screening

1. one approach to gene therapy is to remove some of a patients bone marrow stem cells and \infect\ them with a virus that contains a functional gene. the stem cells are put back into the patients bone marrow, so that they can...

a. divide and make more blood cells with the functional gene.
b. kill the cells that contain the faulty gene.
c. spread throughout the body to other types of cells.
d. stimulate the immune system to attack harmful cells.

Explanation:

1. Restriction enzymes are bacterial enzymes that cut DNA at specific nucleotide sequences. cDNA enzymes are related to complementary DNA synthesis, bacterial polymerases are for polymerization in bacteria, and DNA polymerases are for DNA synthesis.
2. Recombinant DNA is formed when DNA from different sources (like human insulin gene and plasmid) are combined. Bioinformatics is about data analysis, therapeutic cloning is for creating tissues, and gene therapy is for treating diseases by correcting genes.
3. The Human Genome Project aimed to identify base - pair sequences and determine gene functions. Opposite DNA strand sequences are related but not the main goal, the first disease - associated gene was already known before in some cases, and the code for amino acids (genetic code) was already established.
4. Genetic screening tests for genetic disorders. DNA fingerprinting is for identification, genetic engineering is for modifying genes, and the HapMap Project is about haplotypes.
5. In this gene - therapy approach, stem cells divide to make more blood cells with the functional gene. They don't kill faulty - gene - containing cells, don't spread to other cell types in this context, and aren't for stimulating the immune system to attack harmful cells.

Answer:

1. C. Restriction enzymes
2. A. Recombinant DNA
3. B. Function of particular genes
4. D. Genetic screening
5. A. Divide and make more blood cells with the functional gene