NC Biology Genetics

The chemical colchicine disrupts cell division. Which cell process would most likely stop if colchicine were added to a culture of human liver cells?

• mitosis

• meiosis

• crossing over

• active transport

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What carries the instructions for making amino acids in a protein?

• the nitrogen base on the tRNA

• the hydrogen bonding between nitrogen bases

• the sequence of nitrogen bases on the mRNA

• the nitrogen base bonding on the DNA molecule

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How mitosis and meiosis similar?

• both have two cell divisions

• both require DNA replication

• both produce gametes

• both involve crossing over

"The modification of characteristics in an organism through the manipulation of genes," describes which term?

• Genetic engineering

• DNA fingerprinting

• Gel electrophoresis

• Cloning

When fragments of DNA are connected from different sources, this creates:

• A plasmid

• A clone

• Recombinant DNA

• Fragmented DNA

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Bacterial DNA that is often circular or in the shape of a ring is called a:

• Clone

• Plasmid

• Fragment

• Recombinant DNA

Organisms that have had DNA from other organisms inserted into their DNA to produce certain traits are called:

• Plasmids

• Clones

• Transgenic organisms

• Recombinant organisms

Inserting human DNA into a bacterial plasmid to create insulin-producing bacteria is an example of:

• Recombinant DNA

• Bacterial Transformation

• Cloning

• Selective breeding

Which process is responsible for the separation of homologous chromosomes during cell division?

• Mitosis

• Meiosis I

• Meiosis II

• Cytokinesis

What is the primary function of ribosomes in a cell?

• DNA replication

• Protein synthesis

• Lipid synthesis

• Carbohydrate metabolism

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