Regents LE Labs Part D - #1 Relationships and Biodiversity

The amino acids bond together to form which type of complex molecule?

• protein

• starch

• fat

• sugar

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Which two living species would be expected to have the most similar proteins?

• A and C

• B and C

• E and F

• H and M

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Scientists recently discovered that three different types of squid, a marine animal, previously thought to be three different species, were actually all members of one species. Their earlier ideas were based on using squid carcasses (dead bodies). The new, more accepted classification is most probably based on an analysis of

• a greater number of squid carcasses

• the feeding habits of the three different species

• a number of newly found squid fossils

• the DNA present in the cells of squid

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This setup is part of the technique known as

• biological staining

• electrophoresis

• dissection

• chromatography

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Certain chemicals, such as cytochrome C, are found within cells of all living organisms. The biochemical structure of cytochrome C in ground finches and in tree finches is very similar. This suggests that tree finches and ground finches have

• evolved at the same time

• identical DNA

• a common ancestor

• the same nesting site

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This procedure is used to

• separate molecules in a liquid mixture

• detect glucose in a solution

• determine the rate of photosynthesis in plants

• examine the gene sequences of organisms

These materials were used to carry out the technique known as

• genetic engineering

• glucose testing

• paper chromatography

• DNA staining

DNA samples can be separated according to size using the technique of

• replication

• electrophoresis

• chromatography

• dissection

Which technique could be used to determine the relative number of bases in fragments taken from a

sample of DNA?

• light microscopy

• paper chromatography

• cloning

• electrophoresis

Which chemicals are used to cut DNA into fragments for a gel electrophoresis procedure?

• ATP molecules

• enzymes

• molecular bases

• hormones